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Sun F, Ye XL, Wang YB, Yue ML, Li P, Yang L, Liu YL, Fu Y. NPA-Cu 2+ Complex as a Fluorescent Sensing Platform for the Selective and Sensitive Detection of Glyphosate. Int J Mol Sci 2021; 22:9816. [PMID: 34575982 PMCID: PMC8469908 DOI: 10.3390/ijms22189816] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 01/07/2023] Open
Abstract
Glyphosate is a highly effective, low-toxicity, broad-spectrum herbicide, which is extensively used in global agriculture to control weeds and vegetation. However, glyphosate has become a potential threat to human and ecosystem because of its excessive usage and its bio-concentration in soil and water. Herein, a novel turn-on fluorescent probe, N-n-butyl-4-(3-pyridin)ylmethylidenehydrazine-1,8-naphthalimide (NPA), is proposed. It efficiently detected Cu2+ within the limit of detection (LOD) of 0.21 μM and displayed a dramatic turn-off fluorescence response in CH3CN. NPA-Cu2+ complex was employed to selectively and sensitively monitor glyphosate concentrations in real samples accompanied by a fluorescence turn-on mode. A good linear relationship between NPA and Cu2+ of glyphosate was found in the range of 10-100 μM with an LOD of 1.87 μM. Glyphosate exhibited a stronger chelation with Cu2+ than NPA and the system released free NPA through competitive coordination. The proposed method demonstrates great potential in quantitatively detecting glyphosate in tap water, local water from Songhua River, soil, rice, millet, maize, soybean, mung bean, and milk with mild conditions, and is a simple procedure with obvious consequences and no need for large instruments or pretreatment.
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Affiliation(s)
- Fang Sun
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Xin-Lu Ye
- Department of Applied Biology and Chemical Technology, Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;
| | - Yu-Bo Wang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Ming-Li Yue
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Ping Li
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Liu Yang
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Yu-Long Liu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
| | - Ying Fu
- Department of Chemistry, College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China; (F.S.); (Y.-B.W.); (M.-L.Y.); (P.L.); (L.Y.); (Y.-L.L.)
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Delhomme O, Rodrigues A, Hernandez A, Chimjarn S, Bertrand C, Bourdat-Deschamps M, Fritsch C, Pelosi C, Nélieu S, Millet M. A method to assess glyphosate, glufosinate and aminomethylphosphonic acid in soil and earthworms. J Chromatogr A 2021; 1651:462339. [PMID: 34161838 DOI: 10.1016/j.chroma.2021.462339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 06/04/2021] [Accepted: 06/06/2021] [Indexed: 10/21/2022]
Abstract
A new sensitive and selective analytical methodology to quantify glyphosate (GLY), aminomethylphosphonic acid (AMPA), and glufosinate (GLU) in both soil and earthworms (Allolobophora chlorotica) was developed. The extraction and purification methods were optimized. The samples were extracted with various aqueous solutions (HNO3, H2O, KOH and borate buffer) and derivatized with 9-Fluorenylmethyl chloroformate (FMOCCl). To optimize the extraction step, a method to remove the excess FMOCCl was applied based on liquid-liquid extraction with diethyl ether. The purification of derivatized extracts was carried out using XLB solid phase extraction (SPE) cartridges before internal standard quantification by liquid chromatography coupled to tandem mass spectrometry (LC/MS/MS). The elution step was optimized to obtain the best recoveries possible, which was with acidic methanol (1% formic acid) (67% for GLY, 70% for GLU and 65% for AMPA). The extraction and purification method followed by analysis of the two herbicides and AMPA in soils using LC/MS/MS determined limit of quantification (LOQ) values of 0.030 μg g - 1 for GLY, 0.025 μg g - 1 for AMPA and 0.020 µg g - 1 for GLU . For earthworms, LOQ were 0.23 μg g - 1 for GLY, 0.20 μg g - 1 for AMPA and 0.12 μg g - 1 for GLU. . The developed method was applied to determine these compounds in natural soils and earthworms.
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Affiliation(s)
- Olivier Delhomme
- Université de Strasbourg, CNRS-UMR 7515, ICPEES, 67087, Strasbourg, France; Université de Lorraine, 57070, Metz, France
| | - Anaïs Rodrigues
- Université de Strasbourg, CNRS-UMR 7515, ICPEES, 67087, Strasbourg, France
| | - Ana Hernandez
- Université de Strasbourg, CNRS-UMR 7515, ICPEES, 67087, Strasbourg, France
| | - Supansa Chimjarn
- Université de Strasbourg, CNRS-UMR 7515, ICPEES, 67087, Strasbourg, France
| | - Colette Bertrand
- Université Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78026, Versailles, France
| | | | - Clémentine Fritsch
- Laboratoire Chrono-environnement, UMR 6249 CNRS - Université de Franche-Comté Usc INRAE, 16 route de Gray 25030 Besançon cedex, France
| | - Céline Pelosi
- INRAE, Avignon Université, UMR EMMAH, 84000, Avignon, France
| | - Sylvie Nélieu
- Université Paris-Saclay, INRAE, AgroParisTech, UMR ECOSYS, 78850, Thiverval-Grignon, France
| | - Maurice Millet
- Université de Strasbourg, CNRS-UMR 7515, ICPEES, 67087, Strasbourg, France
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Vela F, Anese S, Varela RM, Torres A, Molinillo JMG, Macías FA. Bioactive Diterpenes from the Brazilian Native Plant ( Moquiniastrum pulchrum) and Their Application in Weed Control. Molecules 2021; 26:molecules26154632. [PMID: 34361785 PMCID: PMC8348793 DOI: 10.3390/molecules26154632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 07/26/2021] [Accepted: 07/26/2021] [Indexed: 11/16/2022] Open
Abstract
Even today, weeds continue to be a considerable problem for agriculture. The application of synthetic herbicides produces serious environmental consequences, and crops suffer loss of their activity due to the appearance of new resistant weed biotypes. Our aim is to develop new effective natural herbicides that improve the problem of resistance and do not harm the environment. This work is focused on a bioassay-guided isolation and the characterization of natural products present in Moquiniastrum pulchrum leaves with phytotoxic activity and its preliminary application in weeds. Moquiniastrum pulchrum was selected for two reasons: it is an abundant species in the Cerrado region (the second most important ecosystem in Brazil, after the Amazon)—the explanation behind its being a dominant species is a major focus of interest—and it has traditional employment in folk medicine. Six major compounds were isolated in this plant: one flavone and five diterpenes, two of which are described for the first time in the literature. Four of the six compounds exhibited phytotoxic activity in the bioassays performed. The results confirmed the phytotoxic potential of this plant, which had not been investigated until now.
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Affiliation(s)
- Fátima Vela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
| | - Simoni Anese
- Federal Institute of Education, Science and Technology of Mato Grosso—Campus Campo Novo do Parecis, MT 235 Km 12, Campo Novo do Parecis 78360-000, Brazil;
| | - Rosa M. Varela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
- Correspondence: (R.M.V.); (A.T.); Tel.: +34-956-01-27-90 (R.M.V. & A.T.); Fax: +34-956-01-62-88 (R.M.V. & A.T.)
| | - Ascensión Torres
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
- Correspondence: (R.M.V.); (A.T.); Tel.: +34-956-01-27-90 (R.M.V. & A.T.); Fax: +34-956-01-62-88 (R.M.V. & A.T.)
| | - José M. G. Molinillo
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
| | - Francisco A. Macías
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Faculty of Science, University of Cadiz, C/República Saharaui #7, 11510 Puerto Real, Spain; (F.V.); (J.M.G.M.); (F.A.M.)
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Vu CT, Le PT, Chu DB, Bui VH, Phung TLA, Nguyen Le HY, Labanowski J, Mondamert L, Herrmann M, Behra P. One-step purification/extraction method to access glyphosate, glufosinate, and their metabolites in natural waters. J Chromatogr A 2021; 1649:462188. [PMID: 34034108 DOI: 10.1016/j.chroma.2021.462188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/15/2021] [Accepted: 04/18/2021] [Indexed: 10/21/2022]
Abstract
A new green method for trace level quantification of four herbicides, glyphosate (GLYP), glufosinate (GLUF), and their main metabolites, aminomethylphosphonic acid (AMPA) and 3-(methyl-phosphinico)-propionic acid (MPPA), was developed. The purification step without any derivatization was conducted by solid-phase extraction using Chelex-100 resin in the Fe (III) form, followed by elution with 5% NH4OH. The four analytes were quantified by ultra-high-performance liquid chromatography coupled to tandem mass spectrometry. The developed extraction method was validated on five fresh and sea water matrices with mean recoveries ranging from 80.1% to 109.4% (relative standard deviation < 20%). The extraction conditions were evaluated and certified for the high applicability of the extraction method too. The limits of detection (ng/L) in the five water matrices were in ranges 0.70 - 4.0, 2.4 - 3.9, 1.8 - 4.7, and 1.6 - 4.0 for GLYP, AMPA, GLUF, and MPPA, respectively. The method was successfully applied to detect the four compounds in surface waters sampled along the Red River Delta region in July 2019. The highest concentrations were detected at 565, 1,330, 234, and 871 ng/L for GLYP, AMPA, GLUF, and MPPA, respectively. These results showed the potential capacity of this new method for convenient monitoring of herbicides and their metabolites in the diverse natural water system.
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Affiliation(s)
- Cam Tu Vu
- Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam.
| | - Phuong Thu Le
- Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam
| | - Dinh Binh Chu
- Department of Analytical Chemistry, Hanoi University of Science and Technology (HUST), 100000 Hanoi, Vietnam
| | - Van Hoi Bui
- Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam
| | - Thi Lan Anh Phung
- School of Environmental Research and Technology, HUST, 100000 Hanoi, Vietnam
| | - Hoang Yen Nguyen Le
- Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam
| | - Jérôme Labanowski
- Université de Poitiers, Dept Water & Geochem, ENSIP, IC2MP, 86073 Poitiers Cedex 9, France
| | - Leslie Mondamert
- Université de Poitiers, Dept Water & Geochem, ENSIP, IC2MP, 86073 Poitiers Cedex 9, France
| | - Marine Herrmann
- Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam; LEGOS, IRD/CNRS/CNES/Université Toulouse 3, 31400 Toulouse, France
| | - Philippe Behra
- Laboratoire de Chimie Agro-Industrielle, LCA, Université de Toulouse, INRAE, 31030 Toulouse Cedex 4, France; Water - Environment - Oceanography Department, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 100000 Hanoi, Vietnam.
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Date T, Shigeno K, Hiroshima M, Seo K, Sato M, Tebayashi S, Sato S. Verbascoside from Verbena incompta is a plant root growth inhibitor. Biosci Biotechnol Biochem 2021; 85:1602-1608. [PMID: 34003212 DOI: 10.1093/bbb/zbab090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 05/11/2021] [Indexed: 11/15/2022]
Abstract
The use of biopesticides has expanded rapidly in recent years; however, their use in weed control is less advanced. Herein, we describe the development of a weed control agent by screening 208 plant extracts (104 species) for their plant growth-inhibition activities, which resulted in 142 active samples (from 89 plant species). Verbascoside, isolated from the shoots of Verbena incompta, was identified as a growth inhibitor against rice root (EC50, 1.75 m m), and its root growth-inhibition activity was also confirmed in radish, tomato, and Lotus japonicus. Verbascoside is composed of hydroxytyrosol (EC50,12.51 m m) and caffeic acid (EC50, 4.08 m m), 2 poorly water-soluble phenolic components with weak growth-inhibition activities, and 2 sugars, which are more soluble but inactive. The plant apparently developed a more active and highly soluble compound by condensing these 4 components. We conclude that a biopesticide containing verbascoside may be useful for weed-control purposes.
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Affiliation(s)
- Tomonori Date
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Kanamu Shigeno
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Megumi Hiroshima
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Kohei Seo
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Masashi Sato
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Shinichi Tebayashi
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Shushi Sato
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
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Ghaste M, Hayden NC, Osterholt MJ, Young J, Young B, Widhalm JR. Evaluation of a Stable Isotope-Based Direct Quantification Method for Dicamba Analysis from Air and Water Using Single-Quadrupole LC-MS. Molecules 2020; 25:molecules25163649. [PMID: 32796576 PMCID: PMC7465465 DOI: 10.3390/molecules25163649] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/04/2020] [Accepted: 08/08/2020] [Indexed: 11/16/2022] Open
Abstract
Dicamba is a moderately volatile herbicide used for post-emergent control of broadleaf weeds in corn, soybean, and a number of other crops. With increased use of dicamba due to the release of dicamba-resistant cotton and soybean varieties, growing controversy over the effects of spray drift and volatilization on non-target crops has increased the need for quantifying dicamba collected from water and air sampling. Therefore, this study was designed to evaluate stable isotope-based direct quantification of dicamba from air and water samples using single-quadrupole liquid chromatography–mass spectrometry (LC–MS). The sample preparation protocols developed in this study utilize a simple solid-phase extraction (SPE) protocol for water samples and a single-step concentration protocol for air samples. The LC–MS detection method achieves sensitive detection of dicamba based on selected ion monitoring (SIM) of precursor and fragment ions and relies on the use of an isotopically labeled internal standard (IS) (D3-dicamba), which allows for calculating recoveries and quantification using a relative response factor (RRF). Analyte recoveries of 106–128% from water and 88–124% from air were attained, with limits of detection (LODs) of 0.1 ng mL−1 and 1 ng mL−1, respectively. The LC–MS detection method does not require sample pretreatment such as ion-pairing or derivatization to achieve sensitivity. Moreover, this study reveals matrix effects associated with sorbent resin used in air sample collection and demonstrates how the use of an isotopically labeled IS with RRF-based analysis can account for ion suppression. The LC–MS method is easily transferrable and offers a robust alternative to methods relying on more expensive tandem LC–MS/MS-based options.
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Affiliation(s)
- Manoj Ghaste
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA;
- Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
| | - Nicholas C. Hayden
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (N.C.H.); (M.J.O.); (J.Y.); (B.Y.)
| | - Matthew J. Osterholt
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (N.C.H.); (M.J.O.); (J.Y.); (B.Y.)
| | - Julie Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (N.C.H.); (M.J.O.); (J.Y.); (B.Y.)
| | - Bryan Young
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; (N.C.H.); (M.J.O.); (J.Y.); (B.Y.)
| | - Joshua R. Widhalm
- Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN 47907, USA;
- Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
- Correspondence: ; Tel.: +1-765-496-3891
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He J, Lu Y, Zhao T, Li Y. Preparation of polydopamine-coated, graphene oxide/Fe 3 O 4 - imprinted nanoparticles for selective removal of sulfonylurea herbicides in cereals. J Sci Food Agric 2020; 100:3822-3831. [PMID: 32277468 DOI: 10.1002/jsfa.10419] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/29/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Sulfonylureas are potentially toxic broad-spectrum herbicides. They pose a persistent threat to food safety and the environment. It is therefore important to develop a rapid and efficient pretreatment and detection method to prevent their harmful effects on human health. RESULTS In the present work, a novel and highly selective absorbent for chlorosulfuron (CS) detection was prepared by the simple self-polymerization of dopamine on the surface of magnetic graphene oxide using a CS template. The resultant imprinted nanoparticles (MGO@PDA-MIPs) were characterized by transmission electron microscopy, X-ray diffraction, vibrating-sample magnetometry, thermogravimetric analysis, and nitrogen adsorption-desorption. The adsorption experiments demonstrated that the MGO@PDA-MIPs have excellent selectivity with regard to CS, with a high imprinting factor of 3.41 compared with a non-imprinted polymer. The nanoparticles rapidly achieve adsorption equilibrium and efficient desorption because there are numerous binding sites on the thin polydopamine imprinting layer. Under optimized conditions, the MGO@PDA-MIPs can be used to detect sulfonylurea residues in cereal samples by magnetic solid phase extraction coupled with high performance liquid chromatography (HPLC). The nanoparticles have a satisfactory recovery rate (80.65-101.01%) with a relative standard deviation (RSD) of less than 7.15%, and a limit of detection with regard to CS of 1.61 μg kg-1 (S/N = 3). They can also be re-used at least seven times. CONCLUSION The MGO@PDA-MIPs have outstanding recognition performance, and can be prepared by a facile, single-step, and environmentally friendly process. They therefore have excellent potential for the recognition and separation of trace sulfonylurea herbicides in complex matrices. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Jinxing He
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yue Lu
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Tao Zhao
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
| | - Yingqiu Li
- School of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Sciences, Jinan, China
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Brito GM, Roldi LL, Schetino MÂ, Checon Freitas JC, Cabral Coelho ER. High-performance of activated biocarbon based on agricultural biomass waste applied for 2,4-D herbicide removing from water: adsorption, kinetic and thermodynamic assessments. J Environ Sci Health B 2020; 55:767-782. [PMID: 32586186 DOI: 10.1080/03601234.2020.1783178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Activated biocarbons were prepared using biomass wastes: sugarcane bagasse, coconut shell and endocarp of babassu coconut; as a renewable source of low-cost raw materials and without prior treatments. These activated biocarbons were characterized by textural analysis, solid-state 13C nuclear magnetic resonance spectroscopy, X-ray diffraction and scanning electronic microscopy. Textural analysis results revealed that those activated biocarbons were microporous, with specific surface area values of 547, 991 and 1,068 m2 g-1 from sugarcane bagasse, coconut shell and endocarp of babassu coconut, respectively. The innovation of this work was to evaluate which biomass residue was able to offer the best performance in removing 2,4-dichlorophenoxyacetic acid herbicide (2,4-D) from water by adsorption. Adsorption process of 2,4-D was investigated and the Langmuir and Redlich-Peterson models described best the adsorption process, with R2 values within 0.96-0.99. The 2,4-D removal performance were 97% and 99% for the coconut and babassu biocarbons, respectively. qM parameter values obtained from Langmuir model were 153.9, 233.0 and 235.5 mg g-1 using sugarcane bagasse, coconut shell and endocarp of babassu, respectively. In addition, the adsorption kinetics were described nicely by the second-order model and the Gibbs free energy parameter values were negative, pointing to a spontaneous adsorption, as well.
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Affiliation(s)
- Gilberto Maia Brito
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Larissa Lopes Roldi
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Miguel Ângelo Schetino
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Jair C Checon Freitas
- Laboratory of Carbon and Ceramic Materials, Department of Physics, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - Edumar R Cabral Coelho
- Departament of Environmental Engineering, Federal University of Espírito Santo, Vitória, ES, Brazil
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Mehrani Z, Ebrahimzadeh H, Moradi E. Use of aloin-based and rosin-based electrospun nanofibers as natural nanosorbents for the extraction of polycyclic aromatic hydrocarbons and phenoxyacetic acid herbicides by microextraction in packed syringe method prior to GC-FID detection. Mikrochim Acta 2020; 187:401. [PMID: 32572604 DOI: 10.1007/s00604-020-04374-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 06/02/2020] [Indexed: 01/08/2023]
Abstract
The synthesis of three kinds of sorbents is described. The first kind was a hydrophobic nanofiber as a specific sorbent for non-polar compounds. The second one was a hydrophilic nanofiber as a specific sorbent for polar compounds and the third one was a generic sorbent synthesized from hydrophilic and hydrophobic compounds. The functional groups were natural compounds extracted from aloin plant and gum of pine tree. The aloin/polyacrylonitrile (PAN), rosin/PAN, and aloin/rosin/PAN electrospun nanofibers were synthesized through electrospinning strategy and then characterized using field emission scanning electron microscopy and Fourier transform infrared spectroscopy. Thereafter, the synthesized sorbents were used in microextraction using the packed syringe (MEPS) method. The determination was conducted using gas chromatography with flame ionization detection (GC-FID). Under the optimum condition, the method using aloin/rosin/PAN nanofibers as a sorbent showed a good linearity in the range 1.0-250 ng mL-1 for polycyclic aromatic hydrocarbons (PAHs) (as a model for non-polar compounds) and 1.0-200 ng mL-1 for phenoxyacetic acid herbicides (CAPs) (as a model for polar compounds) with correlation coefficient (R2) higher than 0.997. Limits of detections (LODs) for PAHs and CAPs were in the range 0.1-0.3 ng mL-1 and 0.3-0.5 ng mL-1, respectively. The intra-day (n = 3) and inter-day (between 3 days) relative standard deviations (RDSs%) were in the range 6.3-12.3% for a single syringe. Finally, the MEPS-GC-FID method was applied as a simple, facile, and time and cost-effective method to analyze environmental, farm, and industrial water samples. Graphical abstract Herein, aloin/rosin/polyacrylonitrile (PAN) electrospun nanofiber was successfully synthesized and applied as a sorbent for extraction of polycyclic aromatic hydrocarbons (PAHs) as non-polar compounds and phenoxyacetic acid herbicides (CPAs) as polar compounds from aqueous solutions before GC-FID analysis.
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Affiliation(s)
- Zahra Mehrani
- Department of Chemistry and Pollutants, Shahid Beheshti University, G.C., Evin, P.O. Box 1983969411, Tehran, Iran
| | - Homeira Ebrahimzadeh
- Department of Chemistry and Pollutants, Shahid Beheshti University, G.C., Evin, P.O. Box 1983969411, Tehran, Iran.
| | - Ebrahim Moradi
- Department of Chemistry and Pollutants, Shahid Beheshti University, G.C., Evin, P.O. Box 1983969411, Tehran, Iran
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10
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Zha S, Kuwano K, Shibahara T, Ishibashi F. Algicidal hydroxylated C18 unsaturated fatty acids from the red alga Tricleocarpa jejuensis: Identification, synthesis and biological activity. Fitoterapia 2020; 145:104639. [PMID: 32473294 DOI: 10.1016/j.fitote.2020.104639] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/25/2020] [Accepted: 05/25/2020] [Indexed: 11/17/2022]
Abstract
Bioassay-guided separation of a methanol extract of Tricleocarpa jejuensis by monitoring algicidal activity against the red tide phytoplankton Chattonella antiqua led to the isolation of an active fraction consisting of a mixture of four isomeric compounds. The active compounds were identified as (E)-9-hydroxyoctadec-10-enoic acid (1), (E)-10-hydroxyoctadec-8-enoic acid (2), (E)-11-hydroxyoctadec-12-enoic acid (3) and (E)-12-hydroxyoctadec-10-enoic acid (4) by NMR, IR and mass spectral data. The structures were confirmed by comparison of the NMR and MS data with those of authentic samples of 1-4 obtained by unambiguous syntheses. Synthesized hydroxy acids 1-4 and related compounds were assessed for algicidal activity against C. antiqua and it was found that all of 1-4 had high activity (>80% mortality at 24 h) at a concentration of 20 μg/mL. A structure-activity relationship study using 11 related compounds revealed that the presence of the hydroxyl group is important for the activity and the double bond may be replaced with a triple bond.
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Affiliation(s)
- Shijiao Zha
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
| | - Kazuyoshi Kuwano
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
| | - Tomohiro Shibahara
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan
| | - Fumito Ishibashi
- Graduate School of Fisheries and Environmental Sciences, Nagasaki University, 1-14 Bunkyo-Machi, Nagasaki 852-8521, Japan.
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11
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Masi M, Pannacci E, Santoro E, Zermane N, Superchi S, Evidente A. Stoechanones A and B, Phytotoxic Copaane Sesquiterpenoids Isolated from Lavandula stoechas with Potential Herbicidal Activity against Amaranthus retroflexus. J Nat Prod 2020; 83:1658-1665. [PMID: 32383878 DOI: 10.1021/acs.jnatprod.0c00182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
From the organic extract of Lavandula stoechas, a Mediterranean native plant species, two new phytotoxic copaane sesquiterpenoids were isolated and named stoechanones A and B (1 and 2). They were obtained together with the methyl esters of caffeic and p-coumaric acids and the flavonoid apigenin (3-5, respectively). The structures of stoechanones A and B were determined by spectroscopic (essentially 1D and 2D 1H and 13C NMR and HRESIMS) and chemical methods, and they were characterized as 9,10-dihydroxy-8-isopropyl-1,5-dimethyltricyclo[4.4.0.02.7]dec-4-en-3-one and its 9-O-acetyl derivative. Their relative configurations were assigned by NOESY experiments, and the absolute configurations by comparison of the experimental and DFT-computed ECD spectra. When assayed through Petri dish bioassays, both stoechanones A and B showed phytotoxic effects against seed germination and seedling growth of Amaranthus retroflexus, strongly inhibiting seed germination percentage and radicle and hypocotyl lengths of seedlings. Owing to the herbicidal activity toward A. retroflexus, these two new tricyclic sesquiterpenoids could be proposed and developed as natural bioherbicides in order to increase the control of this problematic weed in the future.
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Affiliation(s)
- Marco Masi
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
| | - Euro Pannacci
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy
| | - Ernesto Santoro
- Dipartimento di Scienze, Università della Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Nadjia Zermane
- Faculty of Sciences, University of Algiers, 2 Didouche Mourad Street, 16002 Algiers, Algeria
| | - Stefano Superchi
- Dipartimento di Scienze, Università della Basilicata, Via dell'Ateneo Lucano 10, 85100 Potenza, Italy
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy
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12
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Xiang S, Lin R, Shang H, Xu Y, Zhang Z, Wu X, Zong F. Efficient Degradation of Phenoxyalkanoic Acid Herbicides by the Alkali-Tolerant Cupriavidus oxalaticus Strain X32. J Agric Food Chem 2020; 68:3786-3795. [PMID: 32133852 DOI: 10.1021/acs.jafc.9b05061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Phenoxyalkanoic acid (PAA) herbicides are mainly metabolized by microorganisms in soils, but the degraders that perform well under alkaline environments are rarely considered. Herein, we report Cupriavidus oxalaticus strain X32, which showed encouraging PAA-degradation abilities, PAA tolerance, and alkali tolerance. In liquid media, without the addition of exogenous carbon sources, X32 could completely remove 500 mg/L 2,4-dichlorophenoxyacetic acid (2,4-D) or 4-chloro-2-methylphenoxyacetic acid within 3 days, faster than that with the model degrader Cupriavidus necator JMP134. Particularly, X32 still functioned at pH 10.5. Of note, with X32 inoculation, we observed 2,4-D degradation in soils and diminished phytotoxicity to maize (Zea mays). Furthermore, potential mechanisms underlying PAA biodegradation and alkali tolerance were then analyzed by whole-genome sequencing. Three modules of tfd gene clusters involved in 2,4-D catabolism and genes encoding monovalent cation/proton antiporters involved in alkali tolerance were putatively identified. Thus, X32 could be a promising candidate for the bioremediation of PAA-contaminated sites, especially in alkaline surroundings.
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Affiliation(s)
- Sheng Xiang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Ronghua Lin
- Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
| | - Hongyi Shang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Yong Xu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Zhenhua Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Xuemin Wu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Fulin Zong
- Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
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13
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Biancolillo A, Maggi MA, Bassi S, Marini F, D’Archivio AA. Retention Modelling of Phenoxy Acid Herbicides in Reversed-Phase HPLC under Gradient Elution. Molecules 2020; 25:molecules25061262. [PMID: 32168813 PMCID: PMC7144001 DOI: 10.3390/molecules25061262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/01/2020] [Accepted: 03/11/2020] [Indexed: 12/02/2022] Open
Abstract
Phenoxy acid herbicides are used worldwide and are potential contaminants of drinking water. Reversed phase high-performance liquid chromatography (RP-HPLC) is commonly used to monitor phenoxy acid herbicides in water samples. RP-HPLC retention of phenoxy acids is affected by both mobile phase composition and pH, but the synergic effect of these two factors, which is also dependent on the structure and pKa of solutes, cannot be easily predicted. In this paper, to support the setup of RP-HPLC analysis of phenoxy acids under application of linear mobile phase gradients we modelled the simultaneous effect of the molecular structure and the elution conditions (pH, initial acetonitrile content in the eluent and gradient slope) on the retention of the solutes. In particular, the chromatographic conditions and the molecular descriptors collected on the analyzed compounds were used to estimate the retention factor k by Partial Least Squares (PLS) regression. Eventually, a variable selection approach, Genetic Algorithms, was used to reduce the model complexity and allow an easier interpretation. The PLS model calibrated on the retention data of 15 solutes and successively tested on three external analytes provided satisfying and reliable results.
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Affiliation(s)
- Alessandra Biancolillo
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, Coppito, 67100 L’Aquila (AQ), Italy;
| | - Maria Anna Maggi
- Hortus Novus srl, Via Campo Sportivo 2, Canistro, 67100 L’Aquila, Italy;
| | - Sebastian Bassi
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy; (S.B.); (F.M.)
| | - Federico Marini
- Dipartimento di Chimica, Università degli Studi di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185 Roma, Italy; (S.B.); (F.M.)
| | - Angelo Antonio D’Archivio
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, Coppito, 67100 L’Aquila (AQ), Italy;
- Correspondence:
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Ladhari A, Tufano I, DellaGreca M. Influence of new effective allelochemicals on the distribution of Cleome arabica L. community in nature. Nat Prod Res 2020; 34:773-781. [PMID: 30445848 DOI: 10.1080/14786419.2018.1501688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 07/10/2018] [Accepted: 07/15/2018] [Indexed: 01/30/2023]
Abstract
New allelochemicals were identified through bio-guided fractionation from the ethyl acetate of seeds extracts, which was the most autotoxic compared to the other plant parts. Phytochemical investigation of the seeds extracts of C. arabica by spectroscopy analyses has led to identify two new dammarane type triterpenes (4 and 9), with nine known analogues (1 - 3, 5 - 8, 10 and 11), a new cucurbitane triterpene (12), acylated dehydrodiconiferyl alcohol (13), and three highly oxygenated flavonols (14-16). The most autotoxic compounds on germination and seedling growth were elucidated as dammarane type triterpenes. However, less autotoxic effect was recorded by an inhibition under 50% for most of the identified flavonoids. These results suggest that those autotoxic substances may be used as a new bio-herbicide that may contribute to manage the distribution of C. arabica in agronomic field.[Formula: see text].
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Affiliation(s)
- Afef Ladhari
- Department of Biology, Faculty of Sciences of Bizerte, Jarzouna 7021, Tunisia
| | - Immacolata Tufano
- Dipartimento di Scienze Chimiche, Università Federico II, Complesso Universitario Monte S. Angelo, via Cinthia, 4, 80126 Napoli, Italy
| | - Marina DellaGreca
- Dipartimento di Scienze Chimiche, Università Federico II, Complesso Universitario Monte S. Angelo, via Cinthia, 4, 80126 Napoli, Italy
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15
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Xu W, Tan L, Guo X, Wang J. Isolation of anti-algal substances from Cylindrotheca closterium and their inhibition activity on bloom-forming Prorocentrum donghaiense. Ecotoxicol Environ Saf 2020; 190:110180. [PMID: 31927195 DOI: 10.1016/j.ecoenv.2020.110180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 01/02/2020] [Accepted: 01/05/2020] [Indexed: 06/10/2023]
Abstract
This paper studied the allelopathic effect of Cylindrotheca closterium on the growth of Prorocentrum donghaiense, the model of harmful algal blooms in aquatic environment, by the co-culture tests and bioassay-guided fraction methods. The growth of P. donghaiense in co-cultures was observably suppressed by C. closterium, and P. donghaiense biomass in C/P = 3: 1 group increased slowly with a low growth rate of 0.18 d-1 after 4 days. Petroleum ether (PE) extract derived from C. closterium filtrates was isolated by C18 column and the allelopathy of all isolated fractions for P. donghaiense was investigated. After 96 h cultivation, the inhibition ratio of PE-Ⅲ and PE-Ⅷ fractions on P. donghaiense could reach up to 70.2% and 64.3% at the concentration of 10-fold when compared to control, while the other fractions displayed relatively low inhibitory effects on P. donghaiense. PE-Ⅲ and PE-Ⅷ fractions also decreased the chlorophyll content and maximum quantum yield of photosystem II (Fv/Fm) of P. donghaiense cells. The activities of superoxide dismutase (SOD), one of antioxidant enzymes, reduced around 8.3% and 13.7% following exposure to 2-fold PE-Ⅲ and PE-Ⅷ, and was significantly decreased following higher exposure concentrations. After 96 h of 10-fold PE-Ⅲ and PE-Ⅷ treatments, Catalase (CAT) activity reduced to 44.86% and 46.42% of that observed in the control group. At the same time, a significant increase in malondialdehyde (MDA) contents was observed. These findings suggested that PE-Ⅲ and PE-Ⅷ fractions contained main allelochemicals and possibly acted as promising algistatic agents for emergency handling of P. donghaiense blooms.
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Affiliation(s)
- Wenjing Xu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Liju Tan
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
| | - Xin Guo
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
| | - Jiangtao Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
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16
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Yu T, Wang L, Ma F, Wang Y, Bai S. A bio-functions integration microcosm: Self-immobilized biochar-pellets combined with two strains of bacteria to remove atrazine in water and mechanisms. J Hazard Mater 2020; 384:121326. [PMID: 31629595 DOI: 10.1016/j.jhazmat.2019.121326] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/25/2019] [Accepted: 09/25/2019] [Indexed: 06/10/2023]
Abstract
A self-immobilization method for microorganisms was developed based on fungal pellets. Generally, pellets have some problems such as cell leakage, cell loading limitation and low mechanical strength. Therefore, biochar was applied to overcome these disadvantages. Atrazine degradable microorganism Arthrobacter sp. ZXY-2 was immobilized by Aspergillus niger Y3 pellets. After adding biochar with optimal dosage (0.006 g biochar for 0.3 g pellets with ZXY-2), the self-immobilized biomixture (SIB) removed 50 mg /L atrazine rapidly within 1 h, which was 61% higher compared to pellets without biochar. The kinetic adsorption results showed that the biosorption of biochar by pellets followed a pseudo-second-order kinetic model. The ATZ removal ability and reusability of SIB were significantly increased by biochar. The results showed that the addition of biochar could enhance the connection between ZXY-2 and pellets based carrier, and the favorable biodegradation pH of ZXY-2 changed to 6 and 10. Several analyses such as ζ-potential measurements, FTIR, XPS, SEM-EDS, and elemental analyses were performed to evaluate the mechanism of action of SIB. To enhance the ATZ degradation by single strain, Agrobacterium, sp WL-1 was isolated and added. The metabolic pathways and their function complementation were studied. Furthermore, a biomass integration model for wastewater treatment was proposed herein.
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Affiliation(s)
- Tianmiao Yu
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, 150090, People's Republic of China
| | - Li Wang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, 150090, People's Republic of China.
| | - Fang Ma
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, 150090, People's Republic of China
| | - Yujiao Wang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, 150090, People's Republic of China
| | - Shanshan Bai
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, Heilongjiang, 150090, People's Republic of China
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17
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Mangao AM, Arreola SLB, San Gabriel EV, Salamanez KC. Aqueous extract from leaves of Ludwigia hyssopifolia (G. Don) Exell as potential bioherbicide. J Sci Food Agric 2020; 100:1185-1194. [PMID: 31680262 DOI: 10.1002/jsfa.10128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 10/24/2019] [Accepted: 10/27/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Ludwigia hyssopifolia (G. Don) Exell, one of the problem weeds in some rice-producing countries, was studied to determine its allelopathic potential based on the effects of aqueous extracts of its tissues (leaves, roots and stem) on seedling growth of selected weeds and rice. The major phenolic compound of its leaves was also isolated and characterized. RESULTS L. hyssopifolia aqueous leaf extract showed significant inhibition of shoot growth and biomass accumulation of weeds (Amaranthus spinosus L., Dactyloctenium aegyptium L., Cyperus iria L.) while maintaining less adverse effects on rice (crop) compared to other aqueous extracts of roots and stem. Phytochemical screening showed that phenols, tannins, flavonoids, terpenoids, saponins and coumarins are found in its leaf aqueous extract. The Folin-Ciocalteu method revealed that its leaves contain 26.66 ± 0.30 mg GAE g-1 leaf. The extract was then acid-hydrolyzed to liberate the phenolics (25 mg phenolics g-1 leaf). The major compound was isolated via preparative thin-layer chromatography using formic acid-ethyl acetate-n-hexane (0.05:4:6) solvent system. It had maximum UV absorption at 272 nm while its Fourier transform infrared spectrum revealed phenol, carboxylic acid and ether functionalities. This also had similar chromatographic mobility when run together with syringic acid in two-dimensional paper chromatography and thin-layer chromatography. CONCLUSIONS L. hyssopifolia has potential allelopathic activity and its leaf aqueous extract showed the highest phytotoxic activity (P ≤ 0.05) indicating its potential as a bioherbicide. The most probable identity of the major phenolic compound is syringic acid. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Arnoldus M Mangao
- Institute of Chemistry, College of Arts and Sciences, University of the Philippines Los Baños College, Laguna, Philippines
| | - Sheryl Lozel B Arreola
- Institute of Chemistry, College of Arts and Sciences, University of the Philippines Los Baños College, Laguna, Philippines
| | - Elgin V San Gabriel
- Institute of Chemistry, College of Arts and Sciences, University of the Philippines Los Baños College, Laguna, Philippines
| | - Kevin C Salamanez
- Institute of Chemistry, College of Arts and Sciences, University of the Philippines Los Baños College, Laguna, Philippines
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18
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Gruľová D, Caputo L, Elshafie HS, Baranová B, De Martino L, Sedlák V, Gogaľová Z, Poráčová J, Camele I, De Feo V. Thymol Chemotype Origanum vulgare L. Essential Oil as a Potential Selective Bio-Based Herbicide on Monocot Plant Species. Molecules 2020; 25:molecules25030595. [PMID: 32013272 PMCID: PMC7037002 DOI: 10.3390/molecules25030595] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/20/2020] [Accepted: 01/27/2020] [Indexed: 12/25/2022] Open
Abstract
Searching for new bio-based herbicides is crucial for decreasing chemical pollution, protecting the environment, and sustaining biodiversity. Origanum vulgare is considered a promising source of essential oil with herbicidal effect. The mode of action is not known. The present study focused on (1) comparison of phytotoxic activity of Origanum vulgare EO on monocot (Triticum aestivum and Hordeum vulgare) and dicot species (Lepidium sativum and Sinapis alba); (2) and evaluating other antimicrobial biological activities against phytopatogen bacteria (Clavibacter michiganensis, Pseudomonas syringae pv. phaseolicola, Pseudomonas savastanoi, and Xanthomonas campestris); antifungal activity against Monilinia fructicola, Aspergillus niger, Penicillium expansum, and Botrytis cinerea; cytotoxic activity and antioxidant activity. According to the GC/MS analyses, the EO belongs to the thymol chemotype O. vulgare with its high content of thymol (76%). Germination of all four species was not influenced by EO. The phytotoxic effect was statistically significant in the monocot species, while in the dicot species the opposite was observed-a stimulation effect, which was also statistically significant. Strong biological activity of O. vulgare EO was noted on all phytopatogen bacteria and fungi in the highest dose. Cytotoxic activity showed an IC50 = 50.5 μg/mL. Antioxidant activity showed an IC50 = 106.6 μg/mL after 45 min experimental time. Based on the presented results, it is possible to conclude that thymol chemotype O. vulgare essential oil could be potentially used as a herbicide with selective effects on monocot plant species.
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Affiliation(s)
- Daniela Gruľová
- Department of Ecology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia;
- Correspondence: ; Tel.: +421-948-030-412
| | - Lucia Caputo
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
| | - Hazem S. Elshafie
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Viale dell’Ateneo Lucano 10, 85100 Potenza, Italy; (H.S.E.); (I.C.)
| | - Beáta Baranová
- Department of Ecology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia;
| | - Laura De Martino
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
| | - Vincent Sedlák
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Zuzana Gogaľová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Janka Poráčová
- Department of Biology, Faculty of Humanities and Natural Sciences, University of Prešov, 17. Novembra 1, 08001 Prešov, Slovakia; (V.S.); (Z.G.); (J.P.)
| | - Ippolito Camele
- School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Viale dell’Ateneo Lucano 10, 85100 Potenza, Italy; (H.S.E.); (I.C.)
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, I-84084 Fisciano, Italy; (L.C.); (L.D.M.); (V.D.F.)
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19
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Coelho ERC, Brito GMD, Frasson Loureiro L, Schettino MA, Freitas JCCD. 2,4-dichlorophenoxyacetic acid (2,4-D) micropollutant herbicide removing from water using granular and powdered activated carbons: a comparison applied for water treatment and health safety. J Environ Sci Health B 2019; 55:361-375. [PMID: 31880197 DOI: 10.1080/03601234.2019.1705113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Activated carbons are well-known porous materials as an effective adsorbent used for the removal of emerging contaminants, such as herbicides, which are increasingly present in water bodies. Most water treatment plants, specially in Brazil, are unable to completely remove such contaminants by the conventional process and advanced treatment using activated carbons is required. The aim of this paper was to verify the influence of the activated carbons granulometry and specific surface area on the 2,4-dichlorophenoxyacetic acid (2,4-D) herbicide removal efficiency using distilled-deionized water and filtered water collected from a conventional Water Treatment Plant. Commercial activated carbons samples used in this work were obtained from two different manufacturers. Activated carbons were analyzed by the specific surface area, pore size and volume distribution, nuclear magnetic resonance, infrared and x-ray spectroscopy, moisture, volatile matter and ash contents. Batch adsorption isotherms experiments were used and performed by Langmuir and Freundlich models. Granular and powdered activated carbons removed over 99% of 2,4-D in distilled water and near to 99% using filtered water. The activated carbons evaluated in this work presented high performance and played a key role in water treatment by removing 2,4-D herbicide, ensuring the protection of human health and the ecosystem.
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Affiliation(s)
| | - Gilberto Maia de Brito
- Department of Environmental Engineering, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Lorena Frasson Loureiro
- Department of Environmental Engineering, Federal University of Espirito Santo, Vitoria, ES, Brazil
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20
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Li C, Zhang N, Chen J, Ji J, Liu X, Wang J, Zhu J, Ma Y. Temperature and pH sensitive composite for rapid and effective removal of sulfonylurea herbicides in aqueous solution. Environ Pollut 2019; 255:113150. [PMID: 31541823 DOI: 10.1016/j.envpol.2019.113150] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
Excessive pesticide residues in the environment have caused more and more serious social problems. In this article, the polymer materials and graphene oxide were smoothly grafted together through surface-initiated atom-transfer radical polymerization. A temperature and pH dual-sensitive adsorbent was successfully obtained, which was used for the removal of six sulfonylurea herbicides in the aquatic environment. Experiment results showed that the adsorbent could efficiently remove the tested pesticides in aqueous solution rapidly (only 1 min). The adsorption process was in consist with the pseudo-second-order kinetics equation and Freundlich model, and the thermodynamic parameters were also calculated. Furthermore, the mechanism for removal performance was judged as n-π, π-π, hydrogen bonding, hydrophobic and electrostatic interaction verdict. Exhilaratingly, the material showed no significant toxicity to Daphnia magna on risk assessment.
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Affiliation(s)
- Changsheng Li
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Nan Zhang
- The Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing, 100125, China
| | - Jixiao Chen
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Jiawen Ji
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Xue Liu
- Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, 266101, China
| | - Jianli Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Jianhui Zhu
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China
| | - Yongqiang Ma
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
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21
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Muhammad M, Rasul Jan M, Shah J, Ara B. Determination of Isoproturon in Environmental Samples using the QuEChERS Extraction-Spectrofluorimetric Method. Environ Toxicol Chem 2019; 38:2614-2620. [PMID: 31499576 DOI: 10.1002/etc.4589] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/12/2019] [Accepted: 09/01/2019] [Indexed: 06/10/2023]
Abstract
An accurate and sensitive method has been developed for determination of the herbicide isoproturon using the Quick Easy Cheap Effective Rugged Safe (QuEChERS) extraction-spectrofluorimetric technique. The method involves the reaction of 2-cyanoacetamide with isoproturon in basic medium (NH3 ; 15 mol/L). The resulting fluorescent product was found to show maximum emission at 378 nm and maximum excitation at 333 nm. Fluorescence intensity under the influence of different parameters was investigated. The linear range of analyte concentrations was found to be 0.5 to 15 µg/mL, with a limit of detection of 0.144 µg/mL, a limit of quantification of 0.437 µg/mL (signal to noise ratio = 3), and a regression coefficient of 0.9991, under optimized conditions. The proposed method was effectively applied for determination of isoproturon in different matrices; the percentage of recovery varied from 85.00 ± 1.2% to 96.00 ± 0.5%. The method was also applied for residue analysis of isoproturon in real soil samples collected from a pilot field. For extraction of isoproturon, the QuEChERS extraction approach was used, and the average residue in the soil samples was found to be 0.81 ± 0.07 µg/g. To show the potential of this approach, our results were compared with those of other methods reported in the literature. Environ Toxicol Chem 2019;38:2614-2620. © 2019 SETAC.
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Affiliation(s)
- Mian Muhammad
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
- Department of Chemistry, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Muhammad Rasul Jan
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Jasmin Shah
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Behisht Ara
- Institute of Chemical Sciences, University of Peshawar, Khyber Pakhtunkhwa, Pakistan
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22
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Zhang C, Wang S, Lv Z, Zhang Y, Cao X, Song Z, Shao M. NanoFe 3O 4 accelerates anoxic biodegradation of 3, 5, 6-trichloro-2-pyridinol. Chemosphere 2019; 235:185-193. [PMID: 31255759 DOI: 10.1016/j.chemosphere.2019.06.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 02/12/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
3, 5, 6-trichloro-2-pyridinol (TCP) is a widespread organic pollutant with persistent, mobile and high antimicrobial effects. Here, nanoFe3O4 was firstly introduced into the anoxic biodegradation of TCP. It was found that nanoFe3O4 significantly accelerated TCP biodegradation. The removal rate of TCP (100 mg L-1) increased from 83.03% to 98.74% within 12 h in the presence of nanoFe3O4, and the addition of nanoFe3O4 also promoted the accumulation of CO2. Reductive dechlorination mechanism was involved in anoxic biodegradation of TCP. Molecular approaches further revealed that nanoFe3O4 distinctly induced the shifts of bacterial community. The dominant genus Ochrobactrum was converted to genus Delftia in nanoFe3O4 treatment, and the relative abundance of Delftia increased from 10.26% to 44.62%. Meanwhile, the total relative abundance of bacteria related to TCP dechlorination and degradation significantly increased in the presence of nanoFe3O4. These results indicated that nanoFe3O4 induced the enrichment of TCP-degrading bacteria to promote the anoxic biodegradation of TCP.
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Affiliation(s)
- Chen Zhang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Shenghui Wang
- College of Life Science, Liaocheng University, Liaocheng, 252059, China.
| | - Zhiwei Lv
- College of Life Science, Liaocheng University, Liaocheng, 252059, China
| | - Yang Zhang
- College of Life Science, Liaocheng University, Liaocheng, 252059, China
| | - Xueting Cao
- College of Life Science, Liaocheng University, Liaocheng, 252059, China
| | - Zhifeng Song
- College of Life Science, Liaocheng University, Liaocheng, 252059, China
| | - Mingzhu Shao
- College of Life Science, Liaocheng University, Liaocheng, 252059, China
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23
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Li X, Li Y, Zhao L, Sun Y, Zhang X, Chen X, Weng L, Li Y. Efficient Removal of Butachlor and Change in Microbial Community Structure in Single-Chamber Microbial Fuel Cells. Int J Environ Res Public Health 2019; 16:ijerph16203897. [PMID: 31618815 PMCID: PMC6843377 DOI: 10.3390/ijerph16203897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/11/2019] [Accepted: 10/12/2019] [Indexed: 11/16/2022]
Abstract
Microbial electrochemical technology provides an inexhaustible supply of electron acceptors, allowing electroactive microorganisms to generate biocurrent and accelerate the removal of organics. The treatment of wastewater contaminated by butachlor, which is a commonly used chloroacetamide herbicide in paddy fields, is a problem in agricultural production. In this study, butachlor was found to be removed efficiently (90 ± 1%) and rapidly (one day) in constructed single-chamber microbial fuel cells (MFCs). After the addition of sodium acetate to MFCs with butachlor as the sole carbon source, electricity generation was recovered instead of increasing the degradation efficiency of butachlor. Meanwhile, the microbial community structure was changed in anodic and cathodic biofilms after the addition of butachlor, following the bioelectrochemical degradation of butachlor. High-throughput sequencing showed the proliferation of Paracoccus and Geobacter in MFCs with butachlor as the sole carbon source and of Thauera butanivorans in MFCs with butachlor and sodium acetate as concomitant carbon sources. These species possess the ability to oxidize different substituents of butachlor and have important potential use for the bioremediation of wastewater, sediments, and soils.
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Affiliation(s)
- Xiaojing Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Yue Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Lixia Zhao
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Yang Sun
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Xiaolin Zhang
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Xiaodong Chen
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Liping Weng
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
| | - Yongtao Li
- Agro-Environmental Protection Institute, Ministry of Agriculture and Rural Affairs/Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, MARA/Tianjin Key Laboratory of Agro-Environment and Agro-Product Safety, Tianjin 300191, China.
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
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Quy TN, Xuan TD, Andriana Y, Tran HD, Khanh TD, Teschke R. Cordycepin Isolated from Cordyceps militaris: Its Newly Discovered Herbicidal Property and Potential Plant-Based Novel Alternative to Glyphosate. Molecules 2019; 24:E2901. [PMID: 31405038 PMCID: PMC6720702 DOI: 10.3390/molecules24162901] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 07/27/2019] [Accepted: 07/30/2019] [Indexed: 01/24/2023] Open
Abstract
There is currently much interest in finding new phytochemicals among plants and fungi as nature-based alternatives to replace problematic herbicides such as glyphosate, which are preferentially used in agricultural production n. We discovered striking herbicidal potency in Cordyceps militaris (L.) and identified cordycepin as its principal plant growth inhibitor. Cordycepin obtained as an ethyl acetate extract was subjected to column chromatography and evaluated for its bioassay-guided phytotoxic capacity against Raphanus sativus (radish), showing a maximum inhibition on germination and growth of radish (IC50 = 0.052-0.078 mg/mL). Gas chromatography-mass spectrometry (GC-MS) (m/z: 251.2) and liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) ([M + Na]+ m/z: 274.1; [M + H]+ m/z: 252.1) analyses confirmed cordycepin as the major component of the tested column fraction (55.38%). At 0.04 mg/mL, cordycepin showed 3.8-5.9- and 3.3-3.7-fold greater inhibition of the germination and growth of radish than benzoic acid (BA) and glyphosate, respectively. Compared with BA, isolated cordycepin reduced plant chlorophyll and carotenoid contents (2.0-9.5 -fold), while proline, total phenolic and total flavonoid contents were increased 1.2-1.8-fold. Finally, cordycepin promoted electrolyte leakage and malondialdehyde accumulation in radish aerial parts. Thus, cordycepin successfully isolated from Cordyceps militaris is a highly potent plant growth inhibitor with pending worldwide patent and may become a potential plant-based novel alternative to the disputed glyphosate.
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Affiliation(s)
- Tran Ngoc Quy
- Graduate School for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan
- Can Tho University, Can Tho City 902070, Vietnam
| | - Tran Dang Xuan
- Graduate School for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
| | - Yusuf Andriana
- Graduate School for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan
| | - Hoang-Dung Tran
- Faculty of Biotechnology, Nguyen Tat Thanh University, 298A-300A Nguyen Tat Thanh Street, Ward 13, District 4, Ho Chi Minh 72820, Vietnam
| | - Tran Dang Khanh
- Agricultural Genetics Institute, Pham Van Dong Street, Hanoi 122000, Vietnam
- Center for Expert, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
| | - Rolf Teschke
- Department of Internal Medicine II, Division of Gastroenterology and Hepatology, Klinikum Hanau, 63450 Hanau, Germany
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Dissanayake Herath GA, Poh LS, Ng WJ. Statistical optimization of glyphosate adsorption by biochar and activated carbon with response surface methodology. Chemosphere 2019; 227:533-540. [PMID: 31004820 DOI: 10.1016/j.chemosphere.2019.04.078] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 04/09/2019] [Accepted: 04/10/2019] [Indexed: 06/09/2023]
Abstract
The introduction of glyphosate, found in herbicides, to waterbodies is of concern due to its toxicity and hence potential threat to public health and ecological systems. The present study has compared glyphosate removal from aqueous solution with activated carbon and biochar. Box-Behnken design, and percent contribution with Pareto analysis techniques were used in surface response and efficiency calculations modelled the process conditions and their effects. The adsorption data better fitted the Freundlich isotherm model than the Langmuir model. The rate of glyphosate adsorption was found to follow a pseudo-second-order model. pH of the solutions was regulated by buffering during the adsorption process. Higher efficacy of glyphosate removal was obtained by optimising parameters such as operating pH, initial glyphosate concentration, temperature, adsorbent dose, and contact time. The conditions yielding the best removals were pH 8.0, 0.2 mg/L, 50.0 °C, 11.4 g/L, 1.7 h for activated carbon and pH 5.0, 0.7 mg/L, 50.0 °C, 12.3 g/L, 1.9 h for biochar, for the aforementioned parameters respectively. The maximum removal capacity and efficiency were 0.0173 mg/g and 98.45% for activated carbon, and 0.0569 mg/g and 100.00% for biochar. The test results indicated biochar could be important from the perspective of performance and affordability.
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Affiliation(s)
- Gayana Anjali Dissanayake Herath
- Interdisciplinary Graduate School, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore; Nanyang Environmental and Water Research Institute (NEWRI), Nanyang Technological University, 1 Cleantech Loop, CleanTech One, Singapore 637141, Singapore
| | - Leong Soon Poh
- Environmental Bio-innovations Group (EBiG), School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Wun Jern Ng
- Environmental Bio-innovations Group (EBiG), School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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26
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Xu B, Sun QJ, Lan JCW, Chen WM, Hsueh CC, Chen BY. Exploring the glyphosate-degrading characteristics of a newly isolated, highly adapted indigenous bacterial strain, Providencia rettgeri GDB 1. J Biosci Bioeng 2019; 128:80-87. [PMID: 30782422 DOI: 10.1016/j.jbiosc.2019.01.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 12/13/2018] [Accepted: 01/14/2019] [Indexed: 01/20/2023]
Abstract
This study explored the characteristics of a newly isolated glyphosate (GLYP)-degrading bacterium Providencia rettgeri GDB 1, for GLYP bioremediation. Due to the serial selection pressure of high GLYP concentrations for enriched isolation, this highly tolerant GLYP biodegrader shows very promising capabilities for GLYP removal (approximately 71.4% degradation efficiency) compared to previously reported strains. High performance liquid chromatography analyses showed aminomethylphosphonic acid (AMPA) rather than sarcosine (SAR) to be the sole intermediate of GLYP decomposition via the AMPA formation pathway. Moreover, GLYP biodegradation was biochemically favorable in aerobic cultures due to its strong growth-associated characteristics. To the best of our knowledge, this is the first report to indicate that bacterial strains in the Providencia genus could demonstrate highly promising GLYP-degrading characteristics in environments with high GLYP contents.
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Affiliation(s)
- Bin Xu
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Research Center for Learning Science, Southeast University, Nanjing 210096, PR China; Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan
| | - Qing-Jiang Sun
- State Key Laboratory of Bioelectronics, School of Biological Science & Medical Engineering, Research Center for Learning Science, Southeast University, Nanjing 210096, PR China
| | - John Chi-Wei Lan
- Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Chungli, Taoyuan 32003, Taiwan
| | - Wen-Ming Chen
- Department of Seafood Science, National Kaohsiung Marine University, No. 142 Hai-Chuan Road, Nan-Tzu, Kaohsiung 811, Taiwan
| | - Chung-Chuan Hsueh
- Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan
| | - Bor-Yann Chen
- Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan.
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27
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Loffredo E, Parlavecchia M, Perri G, Gattullo R. Comparative assessment of metribuzin sorption efficiency of biochar, hydrochar and vermicompost. J Environ Sci Health B 2019; 54:728-735. [PMID: 31230522 DOI: 10.1080/03601234.2019.1632643] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, we used two biochars (BC) produced from grapevine pruning residues (BCgv) and red spruce wood (BCrs), two hydrochars (HC) from urban pruning residues (HCup) and the organic fraction of municipal solid wastes (HCuw), and two vermicomposts (VC) obtained vermicomposting digestates from buffalo manure (VCbm) and mixed feedstock (VCmf). Adsorption kinetics and isotherms of metribuzin onto these materials were performed. Sorption kinetics followed preferentially a pseudo-second-order model, thus indicating the occurrence of chemical interactions between the sorbate and the adsorbents. Adsorption constants were calculated using the Freundlich and Langmuir models. Metribuzin sorption data on BCgv and both HC fitted preferentially the Freundlich equation, whereas on the other materials data fitted both isotherms well (r > 0.95). Metribuzin sorption capacity of the materials followed the trend BC > HC > VC. Sorption constants of metribuzin normalised per organic carbon content (KOC) on BCgv, BCrs, HCup, HCuw, VCbm and VCmf were 561, 383, 251, 214, 102 and 84 L kg-1, respectively. A significant positive correlation (P = 0.016) was calculated between distribution coefficients (Kd) of all materials and the corresponding organic carbon contents, thus indicating a prominent role of the organic fraction of these materials in the adsorption of metribuzin.
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Affiliation(s)
- Elisabetta Loffredo
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro , Bari , Italy
| | - Marco Parlavecchia
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro , Bari , Italy
| | - Giuseppe Perri
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro , Bari , Italy
| | - Roberto Gattullo
- Dipartimento di Scienze del Suolo, della Pianta e degli Alimenti, Università degli Studi di Bari Aldo Moro , Bari , Italy
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28
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Perera WH, Meepa KM, Fronczek FR, Cook DD, Wedge DE, Duke SO. Bioassay-Guided Isolation and Structure Elucidation of Fungicidal and Herbicidal Compounds from Ambrosia salsola (Asteraceae). Molecules 2019; 24:E835. [PMID: 30813648 PMCID: PMC6429092 DOI: 10.3390/molecules24050835] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 02/16/2019] [Accepted: 02/19/2019] [Indexed: 02/04/2023] Open
Abstract
The discovery of potent natural and ecofriendly pesticides is one of the focuses of the agrochemical industry, and plant species are a source of many potentially active compounds. We describe the bioassay-guided isolation of antifungal and phytotoxic compounds from the ethyl acetate extract of Ambrosia salsola twigs and leaves. With this methodology, we isolated and identified twelve compounds (four chalcones, six flavonols and two pseudoguaianolide sesquiterpene lactones). Three new chalcones were elucidated as (S)-β-Hydroxy-2',3,4,6'-tetrahydroxy-5-methoxydihydrochalcone (salsolol A), (S)-β-Hydroxy-2',4,4',6'-tetrahydroxy-3-methoxydihydrochalcone (salsolol B), and (R)-α, (R)-β-Dihydroxy-2',3,4,4',6'- pentahydroxydihydrochalcone (salsolol C) together with nine known compounds: balanochalcone, six quercetin derivatives, confertin, and neoambrosin. Chemical structures were determined based on comprehensive direct analysis in real time-high resolution mass spectrometry (HR-DART-MS), as well as 1D and 2D NMR experiments: Cosy Double Quantum Filter (DQFCOSY), Heteronuclear Multiple Quantum Coherence (HMQC) and Heteronuclear Multiple Bond Coherence (HMBC), and the absolute configurations of the chalcones were confirmed by CD spectra analysis. Crystal structure of confertin was determined by X-ray diffraction. The phytotoxicity of purified compounds was evaluated, and neoambrosim was active against Agrostis stolonifera at 1 mM, while confertin was active against both, Lactuca sativa and A. stolonifera at 1 mM and 100 µM, respectively. Confertin and salsolol A and B had IC50 values of 261, 275, and 251 µM, respectively, against Lemna pausicotata (duckweed). The antifungal activity was also tested against Colletotrichum fragariae Brooks using a thin layer chromatography bioautography assay. Both confertin and neoambrosin were antifungal at 100 µM, with a higher confertin activity than that of neoambrosin at this concentration.
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Affiliation(s)
- Wilmer H Perera
- ORISE Fellow-Agricultural Research Service, U.S. Department of Agriculture, Natural Products Utilization Research Unit, P.O. Box 1848, University, Oxford, MS 38677, USA.
| | - Kumudini M Meepa
- Agricultural Research Service, U.S. Department of Agriculture, Natural Products Utilization Research Unit, P.O. Box 1848, University, Oxford, MS 38677, USA.
| | - Frank R Fronczek
- Department of Chemistry, Louisiana State University, Baton Rouge, LA 70803, USA.
| | - Daniel D Cook
- Agricultural Research Service, U.S. Department of Agriculture, Poisonous Plant Research Lab. 1150 E 1400 N. N Logan, UT 84341, USA.
| | - David E Wedge
- Agricultural Research Service, U.S. Department of Agriculture, Natural Products Utilization Research Unit, P.O. Box 1848, University, Oxford, MS 38677, USA.
| | - Stephen O Duke
- Agricultural Research Service, U.S. Department of Agriculture, Natural Products Utilization Research Unit, P.O. Box 1848, University, Oxford, MS 38677, USA.
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29
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Favaretto A, Cantrell CL, Fronczek FR, Duke SO, Wedge DE, Ali A, Scheffer-Basso SM. New Phytotoxic Cassane-like Diterpenoids from Eragrostis plana. J Agric Food Chem 2019; 67:1973-1981. [PMID: 30685966 DOI: 10.1021/acs.jafc.8b06832] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Eragrostis plana (Nees) is an allelopathic plant with invasive potential in South American pastures. To isolate and identify phytotoxic compounds from leaves and roots of E. plana, a bioassay-directed isolation of the bioactive constituents was performed. This is the first report on a new diterpene carbon skeleton, neocassane, and of three new neocassane diterpenes, neocassa-1,12(13),15-triene-3,14-dione, 1; 19-norneocassa-1,12(13),15-triene-3,14-dione, 2; and 14-hydroxyneocassa-1,12(17),15-triene-3-one, 3, identified from the roots. Compounds 1, 2, and 3 inhibited the growth of duckweed by 50% at concentrations of 109 ± 28, 200 ± 37, and 59 ± 15 μM, respectively. Compound 2 was fungicidal to Colletotrichum fragariae, Colletotrichum acutatum, and Colletotrichum gloeosporioides. The compounds identified here could explain the allelopathy of E. plana. The description of the newly discovered compounds, besides contributing to the chemical characterization of the species, may be the first step in the study of the potential of these compounds as bioherbicides.
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Affiliation(s)
- Adriana Favaretto
- Agronomy Graduate Program , University of Passo Fundo , Passo Fundo , Rio Grande do Sul 99052-900 , Brazil
| | - Charles L Cantrell
- Natural Products Utilization Research Unit , United States Department of Agriculture, USDA-ARS , University , Mississippi 38677 , United States
| | - Frank R Fronczek
- Department of Chemistry , Louisiana State University , Baton Rouge , Louisiana 70803 , United States
| | - Stephen O Duke
- Natural Products Utilization Research Unit , United States Department of Agriculture, USDA-ARS , University , Mississippi 38677 , United States
| | - David E Wedge
- Natural Products Utilization Research Unit , United States Department of Agriculture, USDA-ARS , University , Mississippi 38677 , United States
| | - Abbas Ali
- National Center for Natural Products Research , The University of Mississippi , University , Mississippi 38677 , United States
| | - Simone M Scheffer-Basso
- Agronomy Graduate Program , University of Passo Fundo , Passo Fundo , Rio Grande do Sul 99052-900 , Brazil
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Marco-Brown JL, Gaigneaux EM, Torres Sánchez RM, Dos Santos Afonso M. Adsorption of picloram on clays nontronite, illite and kaolinite: equilibrium and herbicide-clays surface complexes. J Environ Sci Health B 2019; 54:281-289. [PMID: 30755089 DOI: 10.1080/03601234.2018.1561055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The picloram (PCM) adsorption on nontronite, illite and kaolinite was studied at pH 3, 5 and 7. The adsorption isotherms had well-fitted to Langmuir and Freundlich models equations. The interactions of PCM with the clay mineral surfaces exhibited an anionic profile adsorption, with a decrease in adsorption when the pH increases. The PCM adsorption capacity increases in the following order: kaolinite < illite < nontronite. The X-ray diffraction (XRD) analysis of PCM-clay samples revealed that the picloram molecule does not enter into the clays basal space. The interaction of PCM with clays surface sites through nitrogen of the pyridine ring was confirmed by X-ray photoelectron spectroscopy (XPS). Due to the anionic form of PCM, the adsorption onto the external and edges surface sites of the clay minerals was proposed.
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Affiliation(s)
- Jose L Marco-Brown
- a Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, and CONICET-Universidad de Buenos Aires, Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Ciudad Universitaria Pabellón II 3er Piso, Int. Güiraldes 2160 (C1428EHA) , Universidad de Buenos Aires , Buenos Aires , Argentina
| | - Eric M Gaigneaux
- b Institute of Condensed Matter and Nanosciences (IMCN), Division Solids, Molecules and Reactivity (MOST) , Université Catholique de Louvain , Louvain-la-Neuve , Belgium
| | - Rosa M Torres Sánchez
- c CONICET-CCT La Plata-CIC , CETMIC (Centro de Tecnología en Recursos Minerales y Cerámica) , M. B. Gonnet , Argentina
| | - María Dos Santos Afonso
- a Facultad de Ciencias Exactas y Naturales, Departamento de Química Inorgánica, Analítica y Química Física, and CONICET-Universidad de Buenos Aires, Instituto de Química Física de los Materiales, Medio Ambiente y Energía (INQUIMAE), Ciudad Universitaria Pabellón II 3er Piso, Int. Güiraldes 2160 (C1428EHA) , Universidad de Buenos Aires , Buenos Aires , Argentina
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Kumar A, Mandal A, Singh N. Rice and wheat straw ashes: Characterization and modeling of pretilachlor sorption kinetics and adsorption isotherm. J Environ Sci Health B 2019; 54:303-312. [PMID: 30638119 DOI: 10.1080/03601234.2018.1561059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The rice straw ash (RSA) and wheat straw ash (WSA) were explored as low cost adsorbent for pretilachlor removal from water. The ashes were characterized and sorption behavior of pretilachlor was evaluated. Kinetics study suggested that the modified Elovich model best explained the pretilachlor sorption on both the ashes. The adsorption data were analyzed using 2-, 3- and 4-parameter models and nine error functions were used to compute the best fit isotherm by nonlinear regression analysis. The pretilachlor was more sorbed onto the RSA (22.0-92.2%) than the WSA (11.4-61.4%) and percent adsorption decreased with increase in the herbicide concentration in solution. Isotherm model optimization analysis suggested that the Freundlich and the Temkin isotherms were the best models to predict the pretilachlor adsorption onto the RSA and the WSA. The error analysis suggested that the reciprocal of the observed squared (ROS) and the reciprocal of the predicted squared (RPS) error functions provided the best determination of the adsorption constants for the Freundlich and the Temkin isotherms, respectively. The RSA, which exhibited higher pretilachlor sorption potential, can be utilized as low cost adsorbent for pesticide removal from contaminated water.
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Affiliation(s)
- Anup Kumar
- a Division of Agricultural Chemicals , ICAR-Indian Agricultural Research Institute , New Delhi , India
| | - Abhishek Mandal
- a Division of Agricultural Chemicals , ICAR-Indian Agricultural Research Institute , New Delhi , India
| | - Neera Singh
- a Division of Agricultural Chemicals , ICAR-Indian Agricultural Research Institute , New Delhi , India
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Fanali C, Fanali S. Application of Sub-2 Micron Particle Silica Hydride Derivatized with Vancomycin for Chiral Separations by Nano-Liquid Chromatography. Methods Mol Biol 2019; 1985:239-250. [PMID: 31069738 DOI: 10.1007/978-1-4939-9438-0_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
1.8 μm Silica hydride particles have been derivatized with vancomycin and applied to the enantioseparation of some racemic herbicides and nonsteroidal anti-inflammatory drugs (NSAIDs) by nano-liquid chromatography. The chiral stationary phase (CSP) was packed for only 11 cm and the enantiomers were separated utilizing a laboratory-assembled instrumentation. The new CSP was very effective for the separation of the above mentioned acidic compounds, while poor resolutions were obtained for basic compounds. Mixtures of acetate buffer with methanol or acetonitrile allowed the chiral resolution of all compounds. Fast chiral separation of a NSAIDs-related compound can be achieved in less than 60 s.
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Affiliation(s)
- Chiara Fanali
- Department of Medicine, University Campus Bio-Medico of Rome, Rome, Italy.
| | - Salvatore Fanali
- PhD School in Natural Science and Engineering, University of Verona, Verona, Italy
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Derylo-Marczewska A, Blachnio M, Marczewski AW, Seczkowska M, Tarasiuk B. Phenoxyacid pesticide adsorption on activated carbon - Equilibrium and kinetics. Chemosphere 2019; 214:349-360. [PMID: 30267908 DOI: 10.1016/j.chemosphere.2018.09.088] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/11/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
The adsorption of herbicides belonging to the group of halogenated phenoxyacids on the activated carbon was studied. They are differentiated in terms of quantity and type of functional groups (such as chloride, bromide, fluoride) and their position on an aromatic ring. The experimental equilibrium data were analyzed using adsorption isotherm equations taking into account energetic heterogeneity of the adsorption systems. The calculated concentration profiles from the kinetic data were discussed applying two diffusion models, MOE, f-MOE and multi-exponential equations. The dependences between the properties of adsorbates, adsorption uptake and rate were analyzed. The adsorption affinity of pesticides was correlated with adsorbate hydrophobicity, character of functional group, molecular structure. The applicability of kinetic models and equations was investigated; the assumptions of the models were analyzed with regard to consistency with adsorption mechanism. Similarity of adsorption mechanism was found for all adsorbates confirmed by similarity of kinetic curves and corresponding distributions of rate coefficients. The differences in kinetic profiles were attributed to differentiation of herbicide's molecules - number and type of functional groups and their positions on aromatic ring.
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Affiliation(s)
- Anna Derylo-Marczewska
- Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie Sklodowska Sq. 3, 20-031 Lublin, Poland.
| | - Magdalena Blachnio
- Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie Sklodowska Sq. 3, 20-031 Lublin, Poland.
| | - Adam Wojciech Marczewski
- Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie Sklodowska Sq. 3, 20-031 Lublin, Poland.
| | - Malgorzata Seczkowska
- Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie Sklodowska Sq. 3, 20-031 Lublin, Poland.
| | - Bogdan Tarasiuk
- Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie Sklodowska Sq. 3, 20-031 Lublin, Poland.
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Wang H, Huang X, Qian H, Lu R, Zhang S, Zhou W, Gao H, Xu D. Vortex-assisted deep eutectic solvent reversed-phase liquid-liquid microextraction of triazine herbicides in edible vegetable oils. J Chromatogr A 2018; 1589:10-17. [PMID: 30591248 DOI: 10.1016/j.chroma.2018.12.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 01/06/2023]
Abstract
In this study, four triazine herbicides-namely, simazine, ametryn, prometryn and terbuthylazine-were separated and determined using high-performance liquid chromatography coupled with ultraviolet detector (HPLC-UVD). The deep eutectic solvent (DES) formed by tetrabutylammonium chloride ([N4444]Cl, TBA) and ethylene glycol (EG) was selected as the extraction solvent of vortex-assisted reversed-phase liquid-liquid microextraction (VA-RPLLME). The application of the hydrophilic DES expands the range of choice for LLME. The experimental parameters affecting the extraction recoveries, including the amount of the DES, the sample volume and the vortex time, were investigated and optimized by the design of experiments (DoE) methodology. A quadratic model, namely central composite face-centered (CCF) design featuring 20 runs was used instead of the conventional trial and error approach. Under optimum conditions, the limits of determination (LODs) of the method were 0.60-1.50 μg L-1. The enrichment factors for the analytes ranged from 27 to 31. The extraction recoveries were in the range of 84.1-104.9%, and the intra-day, inter-day and intermediate relative standard deviations (RSDs) were less than 8.4%. Finally, the method was applied for the determination of triazine herbicides in vegetable oil samples. The obtained recoveries were in the range of 60.1-107.2% and RSDs were lower than 8.1%. In general, VA-RPLLME can be complementary to the present available methods for the determination of triazine herbicides in vegetable oil samples.
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Affiliation(s)
- Huazi Wang
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China
| | - Xiaodong Huang
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China; Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Laboratory of Quality & Safety Risk Assessment for Vegetable Products (Beijing), Ministry of Agriculture, NO.12 Zhongguancun South St., Haidian District, Beijing 100081, China
| | - Heng Qian
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China
| | - Runhua Lu
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China
| | - Sanbing Zhang
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China
| | - Wenfeng Zhou
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China
| | - Haixiang Gao
- Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
| | - Donghui Xu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Laboratory of Quality & Safety Risk Assessment for Vegetable Products (Beijing), Ministry of Agriculture, NO.12 Zhongguancun South St., Haidian District, Beijing 100081, China.
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Amiri MJ, Bahrami M, Beigzadeh B, Gil A. A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study. Environ Sci Pollut Res Int 2018; 25:34277-34293. [PMID: 30291615 DOI: 10.1007/s11356-018-3327-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 09/24/2018] [Indexed: 06/08/2023]
Abstract
The potential of a granular activated carbon (GAC), a rice husk biochar (BRH), and multi-walled carbon nanotubes (MWCNTs) for removing 2,4-dichlorophenoxyacetic acid (2,4-D) from simulated wastewater and drainage water has been evaluated. In this regard, a response surface methodology (RSM) with a central composite design (CCD) (CCD-RSM design) was used to optimize the removal of 2,4-D from simulated wastewater under different operational parameters. The maximum adsorption capacities followed the order GAC > BRH > MWCNTs, whereas the equilibrium time increased in the order MWCNTs < GAC < BRH. In the case of GAC and BRH, the 2,4-D removal percentage increased significantly upon increasing the adsorbent dosage and temperature and decreased upon increasing the initial 2,4-D concentration and pH. The results showed that the contact time and temperature were not important as regards the adsorption efficiency of 2,4-D by MWCNTs, whereas rapid removal of 2,4-D from simulated wastewater was achieved within the first 5 min of contact with the MWCNTs. The results confirmed that the Freundlich isotherm model with the highest coefficient of determination (R2) and the lowest standard error of the estimate (SEE) satisfactorily fitted the 2,4-D experimental data. In addition, successful usage of the three adsorbents investigated was observed for removal of 2,4-D from drainage water from an agricultural drainage system. An economic analysis with a rate of return (ROR) method indicated that BRH could be used as an eco-friendly, low-cost, versatile, and high adsorption capacity alternative to GAC and MWCNTs for the removal of 2,4-D.
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Affiliation(s)
- Mohammad Javad Amiri
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran.
| | - Mehdi Bahrami
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran
| | - Bahareh Beigzadeh
- Department of Water Engineering, College of Agriculture, Fasa University, Fasa, 74617-81189, Iran
| | - Antonio Gil
- INAMAT-Department of Sciences, Campus of Arrosadia, Public University of Navarra, 31006, Pamplona, Spain
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Chen S, Zheng T, Ye C, Huannixi W, Yakefu Z, Meng Y, Peng X, Tian Z, Wang J, Ma Y, Yang Y, Ma Z, Zuo Z. Algicidal properties of extracts from Cinnamomum camphora fresh leaves and their main compounds. Ecotoxicol Environ Saf 2018; 163:594-603. [PMID: 30077157 DOI: 10.1016/j.ecoenv.2018.07.115] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 07/17/2018] [Accepted: 07/28/2018] [Indexed: 05/23/2023]
Abstract
Plant allelochemicals are considered as the source of effective, economic and friendly-environmental algaecides. To uncover the anti-algal activities of Cinnamomum camphora fresh leaves and their main algicidal agents, we investigated the inhibitory effects of water and methanol extracts from C. camphora fresh leaves on Microcystis aeruginosa and Chlamydomonas reinhardtii cell growth, analyzed the composition of the water and methanol extracts, and determined the main compounds in extracts on the growth of the two algae and their anti-algal mechanism from photosynthetic abilities. Water and methanol extracts from C. camphora fresh leaves can inhibit M. aeruginosa and C. reinhardtii cell growth, and methanol extracts showed stronger inhibitory effects, due to their more compounds and higher molar concentration. There were 23 compounds in the water extracts, mainly including terpenoids, esters, alcohols, and ketones. Compared to the water extracts, 9 new compounds were detected in the methanol extracts, and the molar concentration of total compounds in methanol extracts increased by 1.3 folds. Camphor, α-terpineol and linalool were 3 main compounds in the water and methanol extracts. Their mixture (1: 3: 6) and individual compound showed remarkable inhibition on M. aeruginosa and C. reinhardtii cell growth. The degradation of photosynthetic pigments and the reduction of maximum quantum yield of photosystem II (PSII) photochemistry, coefficient of photochemical quenching as well as apparent electron transport rate in C. reinhardtii cells aggravated gradually with increasing the concentration of the mixture and individual compound, while the non-photochemical dissipation of absorbed light energy increased gradually, which led to the decline of photosynthetic abilities. This indicated that camphor, α-terpineol and linalool were 3 main algicidal agents in C. camphora fresh leaf extracts, and they inhibited algal growth by inducing photosynthetic pigment degradation and declining PSII efficiency. Therefore, C. camphora fresh leaf extracts and their main components have potential utilization values as algaecides.
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Affiliation(s)
- Silan Chen
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Tiefeng Zheng
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Chaolin Ye
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Wulan Huannixi
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Zumulati Yakefu
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Yiyu Meng
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Xin Peng
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Zhengfeng Tian
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Junhao Wang
- Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A & F University, Hangzhou 311300, China
| | - Yuandan Ma
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Youyou Yang
- Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A & F University, Hangzhou 311300, China
| | - Zhongqing Ma
- Key Laboratory of Wood Science and Technology of Zhejiang Province, Zhejiang A & F University, Hangzhou 311300, China
| | - Zhaojiang Zuo
- School of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China.
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Poluektova E, Tokarev Y, Sokornova S, Chisty L, Evidente A, Berestetskiy A. Curvulin and Phaeosphaeride A from Paraphoma sp. VIZR 1.46 Isolated from Cirsium arvense as Potential Herbicides. Molecules 2018; 23:E2795. [PMID: 30373298 PMCID: PMC6278443 DOI: 10.3390/molecules23112795] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 10/21/2018] [Accepted: 10/25/2018] [Indexed: 11/27/2022] Open
Abstract
Phoma-like fungi are known as producers of diverse spectrum of secondary metabolites, including phytotoxins. Our bioassays had shown that extracts of Paraphoma sp. VIZR 1.46, a pathogen of Cirsium arvense, are phytotoxic. In this study, two phytotoxically active metabolites were isolated from Paraphoma sp. VIZR 1.46 liquid and solid cultures and identified as curvulin and phaeosphaeride A, respectively. The latter is reported also for the first time as a fungal phytotoxic product with potential herbicidal activity. Both metabolites were assayed for phytotoxic, antimicrobial and zootoxic activities. Curvulin and phaeosphaeride A were tested on weedy and agrarian plants, fungi, Gram-positive and Gram-negative bacteria, and on paramecia. Curvulin was shown to be weakly phytotoxic, while phaeosphaeride A caused severe necrotic lesions on all the tested plants. To evaluate phaeosphaeride A's herbicidal efficacy, the phytotoxic activity of this compound in combination with five different adjuvants was studied. Hasten at 0.1% (v/v) was found to be the most potent and compatible adjuvant, and its combination with 0.5% (v/v) semi-purified extract of Paraphoma sp. VIZR 1.46 solid culture exhibited maximum damage to C. arvense plants. These findings may offer significant importance for further investigation of herbicidal potential of phaeosphaeride A and possibly in devising new herbicide of natural origin.
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Affiliation(s)
- Ekaterina Poluektova
- All-Russian Institute of Plant Protection, Podbelskogo 3, 196608 Pushkin, Russia.
| | - Yuriy Tokarev
- All-Russian Institute of Plant Protection, Podbelskogo 3, 196608 Pushkin, Russia.
| | - Sofia Sokornova
- All-Russian Institute of Plant Protection, Podbelskogo 3, 196608 Pushkin, Russia.
| | - Leonid Chisty
- Research Institute of Hygiene, Occupational Pathology and Human Ecology, Federal Medical Biological Agency, p/o Kuz'molovsky, 188663 Saint-Petersburg, Russia.
| | - Antonio Evidente
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Napoli, Italy.
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Hu M, Qiu J, Zhang H, Fan X, Liu K, Zeng D, Tan H. Method Development and Validation of Indaziflam and Its Five Metabolites in Soil, Water, and Fruits by Modified QuEChERS and UHPLC-MS/MS. J Agric Food Chem 2018; 66:10300-10308. [PMID: 30212200 DOI: 10.1021/acs.jafc.8b04186] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A method for simultaneously determining indaziflam and its five metabolites in soil, water, and fruits using ultraperformance liquid chromatography/tandem mass spectrometry was established. The analytes were eluted in <4.5 min. Positive electrospray ionization mode was used. The analytes were extracted using acetonitrile containing 1% ammonium hydroxide, and then the extracts were purified using octadecylsilane and PRiME HLB cartridges. The quantification limits were 0.01-1.01 μg kg-1. The linearities of the calibrations for all analytes were excellent ( R2 > 0.9952). The recoveries at spike concentrations of 0.01, 0.1, and 1 mg kg-1 were 81.3-112.1%. The intraday and interday relative standard deviations were <13.5% and <12.3%, respectively. The method was successfully used to determine indaziflam and its five metabolites in samples from markets and fields. The results confirmed that the method is an effective and robust procedure for routinely determining indaziflam and its metabolites in soil, water, and fruit samples.
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Affiliation(s)
- Mingfeng Hu
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Jingsi Qiu
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Hui Zhang
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Xiaosu Fan
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Kunfeng Liu
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Dongqiang Zeng
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
| | - Huihua Tan
- Guangxi Key Laboratory for Agro-Environment and Agro-Product Safety, National Demonstration Center for Experimental Plant Science Education, College of Agriculture , Guangxi University , Nanning , Guangxi 530004 , People's Republic of China
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Su M, Jia L, Wu X, Sun H. Residue investigation of some phenylureas and tebuthiuron herbicides in vegetables by ultra-performance liquid chromatography coupled with integrated selective accelerated solvent extraction-clean up in situ. J Sci Food Agric 2018; 98:4845-4853. [PMID: 29574757 DOI: 10.1002/jsfa.9014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 11/10/2017] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Some trace amounts of urea herbicide residues can be transferred to humans via the food chain, thereby being potentially harmful to human health. The development of a robust analytical methodology for effective sample preparation and simultaneous determination of herbicide residues in vegetable samples is required for achieving food safety. RESULTS The diuron-molecularly imprinted polymers (MIPs) synthesized have excellent affinity and high selectivity to phenylureas (monolinuron, isoproturon, diuron and linuron) and tebuthiuron. A novel automated procedure with better selectivity for vegetable sample treatment was developed by integrated matrix solid-phase dispersion-accelerated solvent extraction clean-up in situ. Five herbicides can be baseline separated with runtime down to 5 min by ultra-performance liquid chromatography, and good linearity was obtained with a correlation coefficient (r) of 0.9999. The limit of quantification of the method was in the range of 0.8-2.3 µg kg-1 . Diuron residue in cherry tomato sample was found to be 40 µg kg-1 . CONCLUSION The developed method has satisfactory selectivity, good linearity, high sensitivity and accuracy as well as speediness, and can ensure rapid selective extraction and sensitive multi-residue analysis at low microgram per kilogram levels of the herbicides in vegetable food. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Ming Su
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
| | - Licong Jia
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
- Hebei Medical University, Shijiazhuang, China
| | - Xingqiang Wu
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
| | - Hanwen Sun
- College of Chemistry and Environmental Science, Hebei University, Key Laboratory of Analytical Science and Technology of Hebei Province, Baoding, China
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Liu K, He Y, Xu S, Hu L, Luo K, Liu X, Liu M, Zhou X, Bai L. Mechanism of the effect of pH and biochar on the phytotoxicity of the weak acid herbicides imazethapyr and 2,4-D in soil to rice (Oryza sativa) and estimation by chemical methods. Ecotoxicol Environ Saf 2018; 161:602-609. [PMID: 29929137 DOI: 10.1016/j.ecoenv.2018.05.096] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 06/08/2023]
Abstract
The existing form of an ionizable organic compound can simultaneously affect its soil adsorption and plant bioactivity. In this experiment, the adsorption and bioactivity of two weak acid herbicides (WAHs), imazethapyr and 2,4-D, were studied to explore the predominant mechanism by which the soil pH and the addition of biochar can influence the phytotoxicity of WAHs in soil. Then, the WAH concentration extracted by hollow fiber-based liquid-phase microextraction (CHF-LPME), the in situ pore water concentration (CIPW) and the added concentration (CAC) were employed to estimate the phytotoxicity. The results showed that with increased pH from 5.5 to 8.5, the phytotoxicity of the WAHs to rice increased about 1-fold in the soil, but decreased in aqueous solutions, the IC50 values for imazethapyr and 2,4-D at pH 5.0 were 3- and 2-fold higher than that at pH 8.0. In addition, the soil adsorption decreased, indicating that the adsorption process was the dominant factor for the variation of the phytotoxicity of the WAHs in the tested soil instead of the decreasing bioactivity. The concentration that inhibits plant growth by 50% (IC50) calculated by the CAC in different pH and biochar soils ranged from 0.619 to 3.826 mg/kg for imazethapyr and 1.871-72.83 mg/kg for 2,4-D. The coefficient of variation (CV) of the IC50 values reached 65.61% for imazethapyr and 130.0% for 2,4-D. However, when IC50 was calculated by CIPW and CHF-LPME, the CVs of the IC50 values decreased to 23.51% and 36.23% for imazethapyr and 40.21% and 50.93% for 2,4-D, respectively. These results suggested that CIPW and CHF-LPME may be more appropriate than CAC for estimating the phytotoxicity of WAHs.
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Affiliation(s)
- Kailin Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China.
| | - Ying He
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China
| | - Shiji Xu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China
| | - Lifeng Hu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China
| | - Kun Luo
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China
| | - Xiangying Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China
| | - Min Liu
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China
| | - Xiaomao Zhou
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Biotechnology Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China
| | - Lianyang Bai
- College of Plant Protection, Hunan Agricultural University, Changsha 410128, PR China; Biotechnology Research Center, Hunan Academy of Agricultural Sciences, Changsha 410125, PR China; Collaborative Innovation Center of Farmland Weeds Control, Hunan Province, PR China.
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Abstract
A review of the literatures published in 2017 on topics relating to analytical methods for pesticides and herbicides is presented in this paper. Based on different techniques, this review is divided into seven parts, i. e., extraction methods, chromatographic or mass spectrometric techniques, electrochemical techniques, spectrophotometric techniques, chemiluminescence and fluorescence methods, biochemical assays and immunoassays, and miscellaneous techniques.
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Affiliation(s)
- Chuan Liu
- Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
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42
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Abstract
This paper highlights scientific literature that was published in the year 2017 related to the presence of pesticides and herbicides in the environment. The review on pesticides and herbicides is divided into four sections with focus on toxicology, ecology, risk assessment, modeling, and treatment strategies.
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Affiliation(s)
- B S Choudri
- Center for Environmental Studies and Research, Sultan Qaboos University, Sultanate of Oman
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Hill M, Weng JK. Pièce de Self-Résistance: a New Paradigm for Natural-Product Herbicide Discovery. Mol Plant 2018; 11:1115-1116. [PMID: 30118809 DOI: 10.1016/j.molp.2018.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 08/09/2018] [Accepted: 08/09/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Matthew Hill
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jing-Ke Weng
- Whitehead Institute for Biomedical Research, 455 Main Street, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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Van TM, Xuan TD, Minh TN, Quan NV. Isolation and Purification of Potent Growth Inhibitors from Piper methysticum Root. Molecules 2018; 23:molecules23081907. [PMID: 30065174 PMCID: PMC6222926 DOI: 10.3390/molecules23081907] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 07/20/2018] [Accepted: 07/28/2018] [Indexed: 12/18/2022] Open
Abstract
Piper methysticum (kava) root is known to possess promising weed suppressing activity. The present study was conducted to search for potent plant growth inhibitors from the root of this medicinal pepper plant. The ethyl acetate (EtOAc) extract exhibited the strongest reduction on growth of Raphanus sativus (radish) (IC50 shoot and root growth = 172.00 and 51.31 µg/mL respectively) among solvent extracts. From this active extract, nine potent growth inhibitors involved in the inhibitory activities of P. methysticum root were isolated, purified and characterized by column chromatography (CC), gas chromatography-mass spectrometry (GC-MS), electrospray ionization-mass spectrometry (ESI-MS) and nuclear magnetic resonance (NMR). The six fractions purified by CC included two flavanones: 5-hydroxy-4′,7-dimethoxyflavanone (C1) and 5,7-dihydroxy-4′-methoxy-6,8-dimethylflavanone (matteucinol, C2) and six kavalactones: 5,6-dehydro-kavain (C3), a mixture of kavain and yagonin (C4), yagonin (C5) and dihydro-5,6-dehydrokavain, 7,8-dihydrokavain, dihydromethysticin and methysticin (C6). The amounts of 5-hydroxy-4′,7-dimethoxyflavanone, matteucinol, 5,6-dehydrokavain and yangonin were 0.76, 2.50, 2.75 and 2.09 mg/g dry weight (DW), respectively. The two flavanones C1 and C2 exhibited the strongest inhibition on shoot elongation (IC50 = 120.22 and 248.03 µg/mL, respectively), whilst the two kavalactone mixtures C4 and C6 showed the highest suppression on root growth of R. sativus (IC50 = 7.70 and 15.67 µg/mL, respectively). This study was the first to report the purification and inhibitory activities of the two flavanones 5-hydroxy-4′,7-dimethoxyflavanone and matteucinol in P. methysticum root. The isolated constituents from P. methysticum root including the flavanones C1 and C2 and the mixtures C4 and C6 may possess distinct modes of action on plant growth. Findings of this study highlighted that the combinations of hexane-ethyl acetate by 9:1 and 8:2 ratios successfully purified flavanones and kavalactones in P. methysticum root.
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Affiliation(s)
- Truong Mai Van
- Graduate school for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
| | - Tran Dang Xuan
- Graduate school for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
| | - Truong Ngoc Minh
- Graduate school for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
| | - Nguyen Van Quan
- Graduate school for International Development and Cooperation, Hiroshima University, Hiroshima 739-8529, Japan.
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Li W, Mao J, Dai X, Zhao X, Qiao C, Zhang X, Pu E. Residue determination of triclopyr and aminopyralid in pastures and soil by gas chromatography-electron capture detector: Dissipation pattern under open field conditions. Ecotoxicol Environ Saf 2018; 155:17-25. [PMID: 29494835 DOI: 10.1016/j.ecoenv.2018.02.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Revised: 02/10/2018] [Accepted: 02/12/2018] [Indexed: 06/08/2023]
Abstract
In this study, a new method for the simultaneous quantitative determination of triclopyr and aminopyralid in forage grass, hay, and soil was developed and validated using gas chromatography coupled with electron capture detector (GC-ECD). In this method, a simple and maneuverable esterification reaction was applied to convert the two acidic herbicides into their ester form with methanol. The target compounds were extracted with 1% hydrochloric acid-acetonitrile, esterified, purified by florisil solid-phase extraction cartridge, and detected in a single run by the GC-ECD. The average recoveries using this method, at different fortified levels, ranged from 80% to 104% with intra-day and inter-day RSDs in the range of 1.2-10.8% and 3.3-10.3% for both the herbicides, respectively. The LODs were below 0.02 mg/kg while the LOQs were below 0.05 mg/kg, both of which were much lower than the maximum residue limits (MRLs) of 25-700 mg/kg in pastures, as established by the USA (the code of federal regulations). The open field dissipation and residual analysis in pastures and soil were conducted with the commercial formulation at two locations. With time, both triclopyr and aminopyralid dissipated via first-order kinetics. In forage grass, both compounds degraded rapidly over the first 14- or 21-d period and at a slow rate over the remainder of experimental days. In soil, they degraded at a relatively slow rate, and dissipated steadily to below or close to the LOQ by 60-d post application. The half-lives of triclopyr were 1.4-1.8 d and 6.2-9.0 d and aminopyralid were 1.7-2.1 d and 8.2-10.6 d in terms of forage grass and soil, respectively. The terminal residue results indicated that on 7 d after the treatment, the residues of aminopyralid and triclopyr in forage grass and hay were lower than the MRLs set by the USA. This work can provide guidance on the reasonable use of these herbicides and also provide an analytical method for the determination of triclopyr and aminopyralid in pasture and soil.
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Affiliation(s)
- Wenxi Li
- Institute of Agricultural Environment and Resource, Yunnan Academy of Agricultural Science, Beijing Road No. 2238, Panlong District, Yunnan 650205, China
| | - Jia Mao
- Institute of Agricultural Environment and Resource, Yunnan Academy of Agricultural Science, Beijing Road No. 2238, Panlong District, Yunnan 650205, China
| | - Xuefang Dai
- Institute of Agricultural Environment and Resource, Yunnan Academy of Agricultural Science, Beijing Road No. 2238, Panlong District, Yunnan 650205, China
| | - Xin Zhao
- College of Resource and Environment, Yunnan Agricultural University, Fengyuan Road No. 452, Panlong District, Yunnan 650201, China
| | - Chengkui Qiao
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Weilai South Road, Huizu District, Zhengzhou 450009, China
| | - Xueyan Zhang
- Institute of Agricultural Environment and Resource, Yunnan Academy of Agricultural Science, Beijing Road No. 2238, Panlong District, Yunnan 650205, China
| | - Entang Pu
- Institute of Agricultural Environment and Resource, Yunnan Academy of Agricultural Science, Beijing Road No. 2238, Panlong District, Yunnan 650205, China.
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Yang F, Zhang S, Sun L, Zhang Y. Facile synthesis of highly porous "carbon sponge" with adsorption and co-adsorption behavior of lead ions and atrazine. Environ Sci Pollut Res Int 2018; 25:18705-18716. [PMID: 29705906 DOI: 10.1007/s11356-018-1935-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
The rapid industrialization and modern agriculture, increasing emission of heavy metals, and abusing application of pesticide have changed biochemical features of the soil system and water system. Additionally, heavy metals and pesticide compounds may occur together in environments, giving rise to more serious damage to the environment because of their combined toxicity and carcinogenic properties. Therefore, there is a growing need for the development of low-cost adsorbents for their removal. Porous carbon materials have been considered as highly effective materials for pollutant ion control. In this thesis, a novel porous "carbon sponge" is produced using sucrose (S-PCS) with gas-producing molten salt KHCO3 as the activator at different pyrolysis temperatures under a limited-oxygen condition. Results from these characterizations have indicated that the as-prepared carbon sponges share high surface area (up to 457.6434 m2 g-1) and abundant oxygen-containing functional groups existed on the surface. The essential factors of contact time, initial concentrations, and cyclic availability on adsorption of lead ions and atrazine onto the as-prepared porous samples are also discussed. The typical kinetic and thermodynamic models are carried out to interpret the adsorption behaviors of lead ions and atrazine. The interactive effects and mechanism of lead ions and atrazine adsorption onto S-PCS samples are examined by simultaneous adsorption and preloading adsorption procedures. Combined with the economic and environmental merits of the raw materials, the porous carbon sponges of sucrose by KHCO3 activated are promising materials for potential practical applications. Graphical abstract The schematic diagram on the preparation of porous carbon sponse from sucrose.
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Affiliation(s)
- Fan Yang
- School of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China
| | - Shuaishuai Zhang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, 150030, China
| | - Lili Sun
- School of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China
| | - Ying Zhang
- School of Resource and Environment, Northeast Agricultural University, Harbin, 150030, China.
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Tasca AL, Puccini M, Fletcher A. Terbuthylazine and desethylterbuthylazine: Recent occurrence, mobility and removal techniques. Chemosphere 2018; 202:94-104. [PMID: 29554512 DOI: 10.1016/j.chemosphere.2018.03.091] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 03/13/2018] [Indexed: 06/08/2023]
Abstract
The herbicide terbuthylazine (TBA) has displaced atrazine in most of EU countries, becoming one of the most regularly used pesticides and, therefore, frequently detected in natural waters. The affinity of TBA for soil organic matter suggests prolonged contamination; degradation leads to the release of the metabolite desethylterbuthylazine (DET), which has higher water solubility and binds more weakly to organic matter compared to the parent compound, resulting in higher associated risk for contamination of groundwater resources. Additionally, TBA and DET are chemicals of emerging concern because of their persistence and toxicity towards aquatic organisms; moreover, they are known to have significant endocrine disruption capacity to wildlife and humans. Conventional treatments applied during drinking water production do not lead to the complete removal of these chemicals; activated carbon provides the greatest efficiency, whereas ozonation can generate by-products with comparable oestrogenic activity to atrazine. Hydrogen peroxide alone is ineffective to degrade TBA, while UV/H2O2 advanced oxidation and photocatalysis are the most effective processes for oxidation of TBA. It has been determined that direct photolysis gives the highest degradation efficiency of all UV/H2O2 treatments, while most of the photocatalytic degradation is attributed to OH radicals, and TiO2 solar-photocatalytic ozonation can lead to almost complete TBA removal in ∼30 min. Constructed wetlands provide a valuable buffer capacity, protecting downstream surface waters from contaminated runoff. TBA and DET occurrence are summarized and removal techniques are critically evaluated and compared, to provide the reader with a comprehensive guide to state-of-the-art TBA removal and potential future treatments.
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Affiliation(s)
- Andrea Luca Tasca
- Civil and Industrial Engineering Department, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy.
| | - Monica Puccini
- Civil and Industrial Engineering Department, University of Pisa, Largo Lucio Lazzarino 1, 56122 Pisa, Italy
| | - Ashleigh Fletcher
- Department of Chemical and Process Engineering, University of Strathclyde, Glasgow, G1 1XJ, UK
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Zoller O, Rhyn P, Rupp H, Zarn JA, Geiser C. Glyphosate residues in Swiss market foods: monitoring and risk evaluation. Food Addit Contam Part B Surveill 2018; 11:83-91. [PMID: 29284371 DOI: 10.1080/19393210.2017.1419509] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 12/17/2017] [Indexed: 10/18/2022]
Abstract
A total of 243 samples of diverse foodstuffs were analysed for glyphosate and aminomethylphosphonic acid (AMPA) using a liquid chromatography triple quadrupole mass spectrometry (LC/MS/MS) method with a relatively low limit of quantification in the range of 0.0005-0.0025 mg kg-1. Main contributors for dietary glyphosate and AMPA intake were cereals and pulses. The results suggest that pasta is a very important foodstuff for dietary glyphosate residue intake in Switzerland. Interestingly all samples of wine, fruit juice and nearly all samples of honey tested positive for glyphosate although at very low levels. A dietary risk assessment was conducted. Food products for analysis were not selected purely at random, rather products were selected for which high levels of glyphosate residues were suspected. However, even in samples where high residue levels were expected, no exceedances of maximum residue levels were found. Consequently, human exposure did not exceed neither acceptable daily intake nor acute reference dose. Therefore, glyphosate residues found in the sampled foodstuffs from the Swiss market were of no concern for human health.
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Affiliation(s)
- Otmar Zoller
- a Risk Assessment Division , Federal Food Safety and Veterinary Office (FSVO) , Bern , Switzerland
| | - Peter Rhyn
- a Risk Assessment Division , Federal Food Safety and Veterinary Office (FSVO) , Bern , Switzerland
| | - Heinz Rupp
- a Risk Assessment Division , Federal Food Safety and Veterinary Office (FSVO) , Bern , Switzerland
| | - Jürg A Zarn
- a Risk Assessment Division , Federal Food Safety and Veterinary Office (FSVO) , Bern , Switzerland
| | - Christoph Geiser
- a Risk Assessment Division , Federal Food Safety and Veterinary Office (FSVO) , Bern , Switzerland
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49
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Khattak SU, Lutfullah G, Iqbal Z, Rehman IU, Ahmad J, Khan AA. Herbicidal activity of pure compound isolated from rhizosphere inhabiting Aspergillus flavus. Nat Prod Res 2018; 32:1212-1215. [PMID: 28494649 DOI: 10.1080/14786419.2017.1326038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 04/23/2017] [Indexed: 10/19/2022]
Abstract
In the quest for bioactive natural products of fungal origin, Aspergillus flavus was isolated from rhizosphere of Mentha piperita using Potato Dextrose Agar (PDA) and Czapec Yeast Broth (CYB) nutrient media for metabolites production. In total, three different metabolites were purified using HPLC/LCMS and the structures were established using 500 Varian NMR experiments. Further the isolated metabolites in different concentrations (10, 100, 1000 μg/mL) were tested for herbicidal activity using Completely Randomized design (CRD) against the seeds of Silybum marianum and Avena fatua which are major threats to wheat crop in Pakistan. Among the isolated metabolites, one compound was found active against the test weed species whose activity is reported in the present work. The chemical name of the compound is 2-(1, 4-dihydroxybutan-2-yl)-1, 3-dihydroxy-6, 8-dimethoxyanthracene-9, 10(4aH, 9aH)-dione with mass of 388. Results showed that all seeds germinated in control treatment; however, with the metabolite treated, the growth was retarded to different levels in all parts of the weeds. At a dose of 1000 μg/mL of the pure compound, 100% seeds of S. marianum and 60% seeds of A. fatua were inhibited. Interestingly, the pure compound exhibited less inhibition of 10% towards the seeds of common wheat (Triticum aestivum).
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Affiliation(s)
- Saeed Ullah Khattak
- a Center of Biotechnology and Microbiology , University of Peshawar , Peshawar , Pakistan
| | - Ghosia Lutfullah
- a Center of Biotechnology and Microbiology , University of Peshawar , Peshawar , Pakistan
| | - Zafar Iqbal
- b Department of Agricultural Chemistry , University of Agriculture , Peshawar , Pakistan
| | - Irshad Ur Rehman
- a Center of Biotechnology and Microbiology , University of Peshawar , Peshawar , Pakistan
| | - Jamshaid Ahmad
- a Center of Biotechnology and Microbiology , University of Peshawar , Peshawar , Pakistan
| | - Abid Ali Khan
- c Department of Chemistry , COMSATS Institute of Information Technology , Abbottabad , Pakistan
- d Institute of Integrative Biosciences , CECOS University of IT and Emerging Sciences , Peshawar , Pakistan
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Szewczyk R, Kuśmierska A, Bernat P. Ametryn removal by Metarhizium brunneum: Biodegradation pathway proposal and metabolic background revealed. Chemosphere 2018; 190:174-183. [PMID: 28987406 DOI: 10.1016/j.chemosphere.2017.10.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 09/27/2017] [Accepted: 10/02/2017] [Indexed: 06/07/2023]
Abstract
Ametryn is a representative of a class of s-triazine herbicides absorbed by plant roots and leaves and characterized as a photosynthesis inhibitor. It is still in use in some countries in the farming of pineapples, soybean, corn, cotton, sugar cane or bananas; however, due to the adverse effects of s-triazine herbicides on living organisms use of these pesticides in the European Union has been banned. In the current study, we characterized the biodegradation of ametryn (100 mg L-1) by entomopathogenic fungal cosmopolite Metarhizium brunneum. Ametryn significantly inhibited the growth and glucose uptake in fungal cultures. The concentration of the xenobiotic drops to 87.75 mg L-1 at the end of culturing and the biodegradation process leads to formation of four metabolites: 2-hydroxy atrazine, ethyl hydroxylated ametryn, S-demethylated ametryn and deethylametryn. Inhibited growth is reflected in the metabolomics data, where significant differences in concentrations of L-proline, gamma-aminobutyric acid, L-glutamine, 4-hydroxyproline, L-glutamic acid, ornithine and L-arginine were observed in the presence of the xenobiotic when compared to control cultures. The metabolomics data demonstrated that the presence of ametryn in the fungal culture induced oxidative stress and serious disruptions of the carbon and nitrogen metabolism. Our results provide deeper insights into the microorganism strategy for xenobiotic biodegradation which may result in future enhancements to ametryn removal by the tested strain.
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Affiliation(s)
- Rafał Szewczyk
- Department of Industrial Microbiology and Biotechnology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland.
| | - Anna Kuśmierska
- Department of Industrial Microbiology and Biotechnology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
| | - Przemysław Bernat
- Department of Industrial Microbiology and Biotechnology, Institute of Microbiology, Biotechnology and Immunology, Faculty of Biology and Environmental Protection, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland
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