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Smiljanić D, Daković A, Obradović M, Ožegović M, Izzo F, Germinario C, de Gennaro B. Application of Surfactant Modified Natural Zeolites for the Removal of Salicylic Acid-A Contaminant of Emerging Concern. Materials (Basel) 2021; 14:ma14247728. [PMID: 34947322 PMCID: PMC8708488 DOI: 10.3390/ma14247728] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/06/2021] [Accepted: 12/10/2021] [Indexed: 11/23/2022]
Abstract
This work aimed to test composites (surfactant modified zeolites prepared by treatment of natural zeolites—clinoptilolite (IZ CLI) and/or phillipsite (PHIL75)-rich tuffs with two different amounts of cationic surfactants: cetylpyridinium chloride (CPyCl) and Arquad® 2HT-75 (ARQ)) for the adsorption of salicylic acid (SA)—a common contaminant of emerging concern. Adsorption of SA was studied at different initial drug concentrations (in the range of 2–100 mg/L) in water solution. The Langmuir isotherm model showed the highest adsorption was achieved by bilayer composite of IZ CLI and CPyCl—around 11 mg/g. Kinetic runs were performed by using the initial drug concentration of 20 mg/L in the time interval from 0 to 75 min and pseudo-second order had good correlation with experimental data. The influence of the four different temperatures on the SA adsorption was also investigated and thermodynamic parameters suggested that the adsorption drug onto composites is an exothermic and nonspontaneous process, followed by the decrease of randomness at the solid/liquid interface during the adsorption. Zeta potential and Fourier-transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) had been performed for the characterization of composites after adsorption of SA confirming the presence of the drug at composite surfaces.
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Affiliation(s)
- Danijela Smiljanić
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche D’ Epere 86, 11000 Belgrade, Serbia; (A.D.); (M.O.); (M.O.)
- Correspondence:
| | - Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche D’ Epere 86, 11000 Belgrade, Serbia; (A.D.); (M.O.); (M.O.)
| | - Milena Obradović
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche D’ Epere 86, 11000 Belgrade, Serbia; (A.D.); (M.O.); (M.O.)
| | - Milica Ožegović
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche D’ Epere 86, 11000 Belgrade, Serbia; (A.D.); (M.O.); (M.O.)
| | - Francesco Izzo
- Department of Earth Sciences, Environment and Resources, Federico II University, Via Cinthia, 80126 Napoli, Italy;
| | - Chiara Germinario
- Department of Science and Technology, University of Sannio, Via F. De Sanctis, 82100 Benevento, Italy;
| | - Bruno de Gennaro
- Department of Chemical, Materials and Production Engineering, Federico II University, Piazzale V. Tecchio 80, 80125 Naples, Italy;
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Smiljanić D, de Gennaro B, Daković A, Galzerano B, Germinario C, Izzo F, Rottinghaus GE, Langella A. Removal of non-steroidal anti-inflammatory drugs from water by zeolite-rich composites: The interference of inorganic anions on the ibuprofen and naproxen adsorption. J Environ Manage 2021; 286:112168. [PMID: 33636624 DOI: 10.1016/j.jenvman.2021.112168] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 10/14/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 05/27/2023]
Abstract
Composites of two natural zeolites - clinoptilolite and phillipsite, and cationic surfactants (cetylpyridinium chloride and Arquad® 2HT-75) were tested for the removal of two emerging contaminants - ibuprofen and naproxen. For each zeolite-rich rock, two different modifications of the zeolitic surfaces were prepared (monolayer and bilayer surfactant coverage). The influence of the initial drug concentrations and contact time on adsorption of these drugs was followed in buffer solution. The Langmuir model showed the highest adsorption capacity for the composite characterized by a bilayered surfactant at the clinoptilolite surface: 19.7 mg/g and 16.1 mg/g for ibuprofen and naproxen, respectively. Also, to simulate real systems, drug adsorption isotherms were conducted in natural water (Grindstone creek water - Columbia, Missouri, USA) by using the best performing adsorbent; in this case, a slight decrease of drug adsorption was recorded. Kinetic runs were performed in distilled water as well as in the presence of ions such as sulfates and bicarbonates; also, in this case, the interfering agents defined an adsorption decrease for bilayer composites.
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Affiliation(s)
- Danijela Smiljanić
- Department of Science and Technology, University of Sannio, Via F. De Sanctis, 82100, Benevento, Italy.
| | - Bruno de Gennaro
- DICMAPI, Federico II University, Piazzale V. Tecchio 80, 80125, Naples, Italy
| | - Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franche d' Epere 86, 11000, Belgrade, Serbia
| | - Barbara Galzerano
- DICMAPI, Federico II University, Piazzale V. Tecchio 80, 80125, Naples, Italy
| | - Chiara Germinario
- Department of Science and Technology, University of Sannio, Via F. De Sanctis, 82100, Benevento, Italy
| | - Francesco Izzo
- Department of Earth, Environment, and Resources Sciences, Federico II University, via Cinthia, 80126, Napoli, Italy
| | - George E Rottinghaus
- Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO, 65211, USA
| | - Alessio Langella
- Department of Earth, Environment, and Resources Sciences, Federico II University, via Cinthia, 80126, Napoli, Italy
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Jauković V, Krajišnik D, Daković A, Damjanović A, Krstić J, Stojanović J, Čalija B. Influence of selective acid-etching on functionality of halloysite-chitosan nanocontainers for sustained drug release. Mater Sci Eng C Mater Biol Appl 2021; 123:112029. [PMID: 33812644 DOI: 10.1016/j.msec.2021.112029] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/13/2021] [Accepted: 03/02/2021] [Indexed: 12/11/2022]
Abstract
The functionality of halloysite (Hal) nanotubes as drug carriers can be improved by lumen enlargement and polymer modification. This study investigates the influence of selective acid etching on Hal functionalization with cationic biopolymer chitosan. Hal was subjected to lumen etching under mild conditions, loaded under vacuum with nonsteroidal antiinflammatory drug aceclofenac, and incubated in an acidic solution of chitosan. The functionality of pristine and etched Hal before and upon polymer functionalization was assessed by ζ-potential measurements, structural characterization (FT-IR, DSC and XRPD analysis), cell viability assay, drug loading and drug release studies. Acid etching increased specific surface area, pore volume and pore size of Hal, decreased ζ-potential and facilitated binding of the cationic polymer. XRPD and DSC analysis revealed crystalline structure of etched Hal. Successful chitosan binding and drug entrapment were further confirmed by FT-IR and DSC studies. XRPD showed surface polymer binding. DSC and FT-IR analyses confirmed the presence of the entrapped drug in its crystalline form. Drug loading was increased for ≈81% by selective lumen etching. Slight decrease of drug content occurred during chitosan functionalization due to aceclofenac diffusion in the polymer solution. The drug release was more sustained from etched Hal nanocomposites (up to ≈87% for 12 h) than from pristine Hal (up to ≈97% for 12 h) due to more intensive chitosan binding. High human fibroblast survival rates upon exposure to pristine and etched Hal before and after chitosan functionalization (>90% in the concentration of 1000 μg/mL) confirmed that both lumen etching under mild conditions and polymer functionalization had no significant effect on cytocompatibility. Based on these findings, selective lumen etching in combination with polycation modification appears to be a promising approach for improvement of Hal nanotubes functionality by increasing payload, polymer binding capacity, and sustained release properties with no significant effect on their cytocompatibility.
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Affiliation(s)
- Valentina Jauković
- University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11 221 Belgrade, Serbia
| | - Danina Krajišnik
- University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11 221 Belgrade, Serbia.
| | - Aleksandra Daković
- Institute for the Technology of Nuclear and Other Mineral Raw Materials, Franše d'Epere 86, 11000 Belgrade, Serbia
| | - Ana Damjanović
- Institute of Oncology and Radiology of Serbia, Pasterova 14, Belgrade, Serbia
| | - Jugoslav Krstić
- University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, 11000 Belgrade, Serbia
| | - Jovica Stojanović
- Institute for the Technology of Nuclear and Other Mineral Raw Materials, Franše d'Epere 86, 11000 Belgrade, Serbia
| | - Bojan Čalija
- University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11 221 Belgrade, Serbia
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Izzo F, Mercurio M, de Gennaro B, Aprea P, Cappelletti P, Daković A, Germinario C, Grifa C, Smiljanic D, Langella A. Surface modified natural zeolites (SMNZs) as nanocomposite versatile materials for health and environment. Colloids Surf B Biointerfaces 2019; 182:110380. [DOI: 10.1016/j.colsurfb.2019.110380] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 12/20/2022]
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Čalija B, Milić J, Milašinović N, Daković A, Trifković K, Stojanović J, Krajišnik D. Functionality of chitosan‐halloysite nanocomposite films for sustained delivery of antibiotics: The effect of chitosan molar mass. J Appl Polym Sci 2019. [DOI: 10.1002/app.48406] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Bojan Čalija
- Department of Pharmaceutical Technology and Cosmetology, Faculty of PharmacyUniversity of Belgrade, 11221 Serbia
| | - Jela Milić
- Department of Pharmaceutical Technology and Cosmetology, Faculty of PharmacyUniversity of Belgrade, 11221 Serbia
| | - Nikola Milašinović
- Department of ForensicsUniversity of Criminal Investigation and Police Studies 11080 Belgrade Serbia
- Faculty of Technology and Metallurgy, Department of Chemical EngineeringUniversity of Belgrade 11000 Belgrade Serbia
| | - Aleksandra Daković
- Institute for the Technology of Nuclear and Other Mineral Raw Materials 11000 Belgrade Serbia
| | - Kata Trifković
- Faculty of Technology and Metallurgy, Department of Chemical EngineeringUniversity of Belgrade 11000 Belgrade Serbia
| | - Jovica Stojanović
- Institute for the Technology of Nuclear and Other Mineral Raw Materials 11000 Belgrade Serbia
| | - Danina Krajišnik
- Department of Pharmaceutical Technology and Cosmetology, Faculty of PharmacyUniversity of Belgrade, 11221 Serbia
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Janićijević J, Milić J, Čalija B, Micov A, Stepanović-Petrović R, Tomić M, Daković A, Dobričić V, Nedić Vasiljević B, Krajišnik D. Potentiation of the ibuprofen antihyperalgesic effect using inorganically functionalized diatomite. J Mater Chem B 2018; 6:5812-5822. [PMID: 32254988 DOI: 10.1039/c8tb01376d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Refined diatomite from the Kolubara coal basin (Serbia) was inorganically functionalized through a simple, one-pot, non-time-consuming procedure. Model drug ibuprofen was adsorbed on the functionalized diatomite under optimized conditions providing high drug loading (∼201 mg g-1). Physicochemical characterization was performed on the starting and modified diatomite before and after ibuprofen adsorption. Dissolution testing was conducted on comprimates containing the drug adsorbed on the modified diatomite (composite) and those containing a physical mixture of the drug with the modified diatomite. The antihyperalgesic and the antiedematous activity of ibuprofen from both composites and physical mixtures were evaluated in vivo employing an inflammatory pain model in rats. Functionalization and subsequent drug adsorption had no significant effect on the diatomite ordered porous structure. Two forms of ibuprofen most likely coexisted in the adsorbed state - the acidic form and a salt/complex with aluminium. Both comprimate types showed extended ibuprofen release in vitro, but no significant influence on the duration of the ibuprofen effect was observed upon in vivo application of the composite or physical mixture. However, both the composite and the physical mixture were more effective than equivalent doses of ibuprofen in pain suppression in rats. This potentiation of the ibuprofen antihyperalgesic effect may result from the formation of the drug complex with the carrier and can be of clinical relevance.
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Affiliation(s)
- Jelena Janićijević
- Department of Pharmaceutical Technology and Cosmetology, University of Belgrade-Faculty of Pharmacy, Vojvode Stepe No. 450, 11221 Belgrade, Serbia.
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Marković M, Daković A, Rottinghaus GE, Petković A, Kragović M, Krajišnik D, Milić J. Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.05.054] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Marković M, Daković A, Rottinghaus GE, Kragović M, Petković A, Krajišnik D, Milić J, Mercurio M, de Gennaro B. Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant. Colloids Surf B Biointerfaces 2016; 151:324-332. [PMID: 28040664 DOI: 10.1016/j.colsurfb.2016.12.033] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [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: 07/21/2016] [Revised: 11/02/2016] [Accepted: 12/21/2016] [Indexed: 11/19/2022]
Abstract
In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73mg/g for organoclinoptilolite and 6.86mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98mg/g for organoclinoptilolite and 7.54mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.
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Affiliation(s)
- Marija Marković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franše d' Epere 86, 11000 Belgrade, Serbia.
| | - Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franše d' Epere 86, 11000 Belgrade, Serbia
| | - George E Rottinghaus
- Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA
| | - Milan Kragović
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franše d' Epere 86, 11000 Belgrade, Serbia
| | - Anđela Petković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Franše d' Epere 86, 11000 Belgrade, Serbia
| | - Danina Krajišnik
- Department of Pharmaceutical Technology and Cosmetology, University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Jela Milić
- Department of Pharmaceutical Technology and Cosmetology, University of Belgrade, Faculty of Pharmacy, Vojvode Stepe 450, 11221 Belgrade, Serbia
| | - Mariano Mercurio
- Department of Science and Technologies, University of Sannio, Via dei Mulini 59/A, 82100 Benevento, Italy
| | - Bruno de Gennaro
- Department of Chemical, Materials and Industrial Production Engineering, Federico II University, Piazzale V. Tecchio, 80, 80125 Naples, Italy
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Marković M, Daković A, Krajišnik D, Kragović M, Milić J, Langella A, de Gennaro B, Cappelletti P, Mercurio M. Evaluation of the surfactant/phillipsite composites as carriers for diclofenac sodium. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.127] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Janićijević J, Krajišnik D, Čalija B, Dobričić V, Daković A, Krstić J, Marković M, Milić J. Inorganically modified diatomite as a potential prolonged-release drug carrier. Materials Science and Engineering: C 2014; 42:412-20. [DOI: 10.1016/j.msec.2014.05.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 04/30/2014] [Accepted: 05/23/2014] [Indexed: 10/25/2022]
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Milić J, Daković A, Krajišnik D, Rottinghaus GE. Modified Natural Zeolites-Functional Characterization and Biomedical Application. Adv Healthc Mater 2014. [DOI: 10.1002/9781118774205.ch10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Mitrović B, Vitorović G, Jovanović M, Lazarević-Macanović M, Andrić V, Stojanović M, Daković A, Vitorović D. Uranium distribution in broiler organs and possibilities for protection. Radiat Environ Biophys 2014; 53:151-157. [PMID: 24096927 DOI: 10.1007/s00411-013-0496-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Accepted: 09/21/2013] [Indexed: 06/02/2023]
Abstract
The aim of the present study was to investigate the distribution of uranium (uranyl nitrate hexahydrate, UN) in muscle and organs (kidney, liver, and brain) of broilers, after a 7-day contamination with UN and administration of two different adsorbents (organobentonite and organozeolite). The birds were contaminated during 7 days with 25 mg/UN per day. Adsorbents were given via gastric tube, immediately after contamination with UN. In group 1 that did not receive any adsorbents, histopathological changes in the contaminated broilers were observed in small intestine, liver, and kidney in the form of necrosis of intestinal villi, oedema and cytoplasmic vacuolation of hepatocytes, and dystrophic changes in the kidney tubules epithelium. Organobentonite administered via gastric tube (group 2) reduced uranium distribution by 66 % in kidney, 81 % in liver, and 34 % in brain. In group 3, administration of organozeolite reduced uranium distribution by 67 % in kidney, 68 % in liver, and 49 % in brain. In groups 2 and 3, where the broilers received adsorbents immediately after the UN contamination, no histopathological lesions were observed.
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Affiliation(s)
- Branislava Mitrović
- Department of Radiology and Radiation Hygiene, Faculty of Veterinary Medicine, University in Belgrade, Bulevar Oslobodjenja 18, 11000, Belgrade, Serbia,
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Andrić GG, Marković MM, Adamović M, Daković A, Golić MP, Kljajić PJ. Insecticidal potential of natural zeolite and diatomaceous earth formulations against rice weevil (Coleoptera: Curculionidae) and red flour beetle (Coleoptera: Tenebrionidae). J Econ Entomol 2012; 105:670-678. [PMID: 22606840 DOI: 10.1603/ec11243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Insecticidal potential of natural zeolites and diatomaceous earths originating from Serbia against Sitophilus oryzae (L.) and Tribolium castaneum (Herbst) was evaluated. Two natural zeolite formulations (NZ and NZ Modified) were applied to wheat at rates of 0.50, 0.75, and 1.0 g/kg, while two diatomaceous earth (DE) formulations (DE S-1 and DE S-2) were applied at rates of 0.25, 0.50, 0.75, and 1.0 g/kg. A bioassay was conducted under laboratory conditions: temperature of 24 +/- 1 degrees C, relative humidity in the range 50-55%, in tests with natural zeolites, and 60-65%, in tests with DEs, and in all combinations for progeny production. Mortality was assessed after 7, 14, and 21 d of insect contact with treated wheat, and the total mortality after an additional 7-d recovery on untreated broken wheat. Progeny production was also assessed after 8 wk for S. oryzae and 12 wk for T. castaneum. The highest mortality for S. oryzae and T. castaneum was found after the longest exposure period and 7 d of recovery, on wheat treated with NZ at the highest rate and DEs at rates of 0.50 -1.0 g/kg. Progeny reduction higher than 90% was achieved after 14 and 21 d of contact of both beetle pests with wheat treated with DE S-1 at 0.50-1.0 g/kg and DE S-2 at 0.75-1.0 g/kg, while the same level of reduction was achieved only for T. castaneum after its contact with the highest rate of NZ formulation. NZ Modified, applied even at the highest rate, revealed much lower insecticidal potential.
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Affiliation(s)
- Goran G Andrić
- Pesticide and Environment Research Institute, Laboratory of Applied Entomology, Banatska 31b, 11080 Belgrade, Serbia
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Krajišnik D, Daković A, Milojević M, Malenović A, Kragović M, Bogdanović DB, Dondur V, Milić J. Properties of diclofenac sodium sorption onto natural zeolite modified with cetylpyridinium chloride. Colloids Surf B Biointerfaces 2011; 83:165-72. [DOI: 10.1016/j.colsurfb.2010.11.024] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 11/01/2010] [Accepted: 11/10/2010] [Indexed: 10/18/2022]
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Milićević D, Jurić V, Daković A, Jovanović M, Lakićević B, Stefanović S, Nikšić M. WITHDRAWN: Comparison of high performance liquid chromatography and liquid chromatography/tandem mass spectrometry methods in the quantification and confirmation of ochratoxin A in pig tissue. Meat Sci 2010:S0309-1740(10)00374-8. [PMID: 21071155 DOI: 10.1016/j.meatsci.2010.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 10/19/2010] [Accepted: 10/19/2010] [Indexed: 11/17/2022]
Abstract
This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Dragan Milićević
- Institute of Meat Hygiene and Technology, Kaćanskog 13, 11000 Belgrade, Serbia
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Krajišnik D, Milojević M, Malenović A, Daković A, Ibrić S, Savić S, Dondur V, Matijašević S, Radulović A, Daniels R, Milić J. Cationic surfactants-modified natural zeolites: improvement of the excipients functionality. Drug Dev Ind Pharm 2010; 36:1215-24. [DOI: 10.3109/03639041003695121] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Daković A, Kragović M, Rottinghaus GE, Sekulić Z, Milićević S, Milonjić SK, Zarić S. Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B(1). Colloids Surf B Biointerfaces 2009; 76:272-8. [PMID: 20004084 DOI: 10.1016/j.colsurfb.2009.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 10/15/2009] [Accepted: 11/09/2009] [Indexed: 10/20/2022]
Abstract
Natural zeolitic tuff was modified with 2, 5 and 10mmol M(+)/100g of octadecyldimethylbenzyl ammonium (ODMBA) ions and the products were denoted as OZ-2, OZ-5 and OZ-10. The starting material and organozeolites were characterized by determination of the point of zero charge (pH(pzc)) and by thermal analysis. In vitro sorption of fumonisin B(1) (FB(1)) was studied for all sorbents at pH 3, 7 and 9. The pH(pzc) for the zeolitic tuff was 6.8+/-0.1, while the pH(pzc) for OZ-2, OZ-5 and OZ-10 pH(pzc) was 7.0+/-0.1. The curves pH(final)=f(pH(initial)) suggest that the surfaces of all sorbents are positively charged at pH 3 and uncharged at pH 7 and 9. High sorption of FB(1) by the zeolitic tuff in acidic solution suggests electrostatic interactions between the anionic FB(1) and the positively charged surface. At pH 7 and 9, adsorption of FB(1) is prevented because anionic FB(1) cannot be adsorbed at the uncharged surface. From the pH(pzc) for the organozeolites, it is possible that with lower amounts of ODMBA (OZ-2 and OZ-5), at pH 3, beside interactions between head groups of ODMBA and its alkyl chains and anionic FB(1), electrostatic interactions between positive uncovered surface and anionic FB(1) contribute to the sorption, while at pH 7 and 9 there is only the possibility for interactions between FB(1) and ODMBA. When the zeolitic surface was completely covered with ODMBA (OZ-10), FB(1) sorption was independent of the form of FB(1) suggesting only interactions between ODMBA and FB(1).
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Affiliation(s)
- Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia.
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Daković A, Matijasević S, Rottinghaus GE, Ledoux DR, Butkeraitis P, Sekulić Z. Aflatoxin B(1) adsorption by natural and copper modified montmorillonite. Colloids Surf B Biointerfaces 2008; 66:20-5. [PMID: 18585010 DOI: 10.1016/j.colsurfb.2008.05.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2008] [Revised: 05/08/2008] [Accepted: 05/08/2008] [Indexed: 10/22/2022]
Abstract
Adsorption of aflatoxin B(1) (AFB1) by natural montmorillonite (MONT) and montmorillonite modified with copper ions (Cu-MONT) was investigated. Both MONTs were characterized using the X-ray powder diffraction (XRPD) analysis, thermal analysis (DTA/TGA) and scanning electron miscroscopy/electron dispersive spectroscopy (SEM/EDS). The results of XRPD and SEM/EDS analyses of Cu-MONT suggested partial ion exchange of native inorganic cations in MONT with copper occurred. Investigation of AFB1 adsorption by MONT and Cu-MONT, at pH 3, 7 or 9, showed that adsorption of this toxin by both MONTs was high (over 93%). Since AFB1 is nonionizable, no differences in AFB1 adsorption by both MONTs, at different pHs, were observed, as expected. Futhermore, it was determined that adsorption of AFB1 by both MONTs followed a non-linear (Langmuir) type of isotherm, at pH 3. The calculated maximum adsorbed amounts of AFB1 by MONT (40.982mg/g) and Cu-MONT (66.225mg/g), derived from Langmuir plots of isotherms, indicate that Cu-MONT was much effective in adsorbing AFB1. Since, the main cation in an exchangeable position in MONT is calcium, and in Cu-MONT both calcium and copper, the fact that ion exchange of inorganic cations in MONT with copper increases adsorption of AFB1 suggests that additional interactions between AFB1 and copper ions in Cu-MONT caused greater adsorption.
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Affiliation(s)
- Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, 11 000 Belgrade, Serbia.
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Daković A, Matijasević S, Rottinghaus GE, Dondur V, Pietrass T, Clewett CFM. Adsorption of zearalenone by organomodified natural zeolitic tuff. J Colloid Interface Sci 2007; 311:8-13. [PMID: 17368471 DOI: 10.1016/j.jcis.2007.02.033] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Revised: 01/29/2007] [Accepted: 02/09/2007] [Indexed: 10/23/2022]
Abstract
Adsorption of zearalenone (ZEN) by natural zeolitic tuff, modified with different numbers of octadecyldimethylbenzylammonium (ODMBA) ions, was investigated. The results of solid-state 1H NMR analysis of the starting material suggested that zeolitic tuff is rich in mineral clinoptilolite, confirming the results of previous thermal stability study. Three organozeolites (OZ-2, OZ-5, and OZ-10) were prepared with ODMBA surface coverages of 20, 50, and 100 mmol/100 g. The mechanism of ZEN sorption by the three organozeolites was investigated through the determination of the adsorption isotherms at pH 3, 7, and 9. Adsorption of ZEN by organozeolites was best represented by a linear type of isotherm at pH 3, while at pH 7 and 9, adsorption of ZEN by organozeolites followed a nonlinear (Langmuir) type of isotherm. The different shape of the ZEN adsorption isotherms for the three organozeolites with different levels of ODMBA at the zeolitic surface at different pH values suggests that the adsorption mechanism may be dependent on the form of ZEN in solution. Since, at pH 3, ZEN exists in solution as the neutral form, the linear isotherms at pH 3 suggested that hydrophobic interactions are probably responsible for adsorption of neutral, hydrophobic ZEN onto the hydrophobic surface of the organozeolites. At pH 7, the phenolate anion is present in water solution, while at pH 9, ZEN is almost entirely in the anionic form. The nonlinear isotherms obtained for ZEN adsorption by the three organozeolites suggest that sorption appears to be the result of the adsorption process as well as partitioning.
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Affiliation(s)
- Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, P.O. Box 390, 11 000 Belgrade, Serbia.
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Daković A, Tomasević-Canović M, Dondur V, Rottinghaus GE, Medaković V, Zarić S. Adsorption of mycotoxins by organozeolites. Colloids Surf B Biointerfaces 2005; 46:20-5. [PMID: 16198090 DOI: 10.1016/j.colsurfb.2005.08.013] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Revised: 08/04/2005] [Accepted: 08/22/2005] [Indexed: 11/20/2022]
Abstract
Adsorption of zearalenone (ZEN), ochratoxin A (OCHRA) and aflatoxin B1 (AFB1) on natural zeolite, clinoptilolite, modified with different amounts of octadecyldimethylbenzyl ammonium (ODMBA) ions was investigated. Results showed that adsorption of hydrophobic ionizable ZEN on unmodified zeolite tuff was very low and that adsorption on organozeolites increased with increasing hydrophobicity of the zeolitic surface. The adsorption was independent of the form of ZEN in solution and the solution pH, indicating that hydrophobic interactions with ODMBA are responsible for ZEN adsorption. Adsorption of low polar ionizable OCHRA on organozeolites also increased with increasing hydrophobicity of the zeolitic surface, however, OCHRA showed moderate adsorption on unmodified zeolitic tuff at pH 3. OCHRA adsorption on unmodified zeolite as well as on lower surface coverage of organozeolite was dependent on the form of OCHRA in solution; there was a decrease of adsorption at high pH, where OCHRA is in the anionic form. It indicated that at acidic pH, low surface coverage allows some combination of hydrophobic interaction with ODMBA and interactions with the surface of the zeolite. At higher surface coverage, the OCHRA adsorption was higher and practically independent of pH, indicating that the hydrophobic interactions of OCHRA with ODMBA are responsible for its adsorption. Nonionizable low polar AFB1 had a high affinity for the unmodified zeolitic tuff and the adsorption of AFB1 was greatly reduced for organozeolites, indicating that AFB1 does not have high tendency for hydrophobic interactions with ODMBA. pH dependence of AFB1 adsorption, while AFB1 has the same form at all pHs, demonstrated that the surface modification of the zeolite depends on pH and that these modifications have influence on its adsorption. The calculated dipole moments of neutral mycotoxin molecules: AFB1-9.5D, OCHRA-6.9D and ZEN-2.2D are in qualitative agreement with adsorption experimental data.
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Affiliation(s)
- Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, P.O. Box 390, 11000 Belgrade, Serbia and Montenegro.
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