1
|
Wang H, Wang C, Guo F, Yu J, Zhang Y, Harder M, Ntaikou I, Antonopoulou G, Lyberatos G, Yan Q. Enhancement of biosynthesis of polyhydroxyalkanoates (PHA) from Taihu blue algae by adding by-product acetic acid. J Biotechnol 2023; 363:32-39. [PMID: 36610479 DOI: 10.1016/j.jbiotec.2023.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/01/2023] [Accepted: 01/03/2023] [Indexed: 01/05/2023]
Abstract
As an easily obtained organic waste, by-product acetic acid could be an appropriate co-substrate with blue algae wastes (increase C/N ratio of substrates) for co-fermentation of PHA production. However, there are still acrylic acid and other chemicals in by-product acetic acid, which could cause severe inhibition for fermenting microorganisms during PHA production process. The current study represented that alkali pretreatment (pH level of 12) is a more favorable method compared with thermal pretreatment (80 ℃ for 30 min) for breaking cell walls of blue algae. It seemed that there was no synergistic effect of the combination of thermal and alkali pretreatment methods (temperature of 80 ℃ and pH level of 12). Optimal parameters during electro-fenton process for removal of inhibitors in by-product acetic acid were under current of 0.5 A, pH level of 3 and reaction time of 120 min. Both the highest dry weight of PHA and PHA concentration were achieved by applying blue algae and by-product acetic acid (after pretreatment) as co-substrates (mixed ratio of 3:1, stirring speed of 200 r/min, 24 h), indicating that using by-product acetic acid (after pretreatment) as co-substrate could increase C/N ratio and promote PHA production successfully. The current study could offer new insights for improving PHA production by co-fermentation.
Collapse
Affiliation(s)
- Han Wang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Chaoyun Wang
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Fang Guo
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Jie Yu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China
| | - Yi Zhang
- Department of Environmental Science and Engineering, Fudan University, 2105 Songhu Road, Yangpu District, Shanghai, China
| | - Marie Harder
- Department of Environmental Science and Engineering, Fudan University, 2105 Songhu Road, Yangpu District, Shanghai, China; Cockcroft Building, University of Brighton, Lewes Road, BN2 4GJ, United Kingdom
| | - Ioanna Ntaikou
- Institute of Chemical Engineering Sciences, Platani, Patras, GR 26504, Greece
| | | | - Gerasimos Lyberatos
- Institute of Chemical Engineering Sciences, Platani, Patras, GR 26504, Greece; School of Chemical Engineering, National Technical University of Athens, Athens, GR 15780, Greece
| | - Qun Yan
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, China.
| |
Collapse
|
2
|
Inayat S, Ahmad SR, Awan SJ, Nawshad M, Ali Q. In vivo and in vitro toxicity profile of tetrabutylammonium bromide and alcohol-based deep eutectic solvents. Sci Rep 2023; 13:1777. [PMID: 36720927 PMCID: PMC9889713 DOI: 10.1038/s41598-023-28928-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 01/27/2023] [Indexed: 02/02/2023] Open
Abstract
Deep eutectic solvents (DESs) have emerged as new promising solvents in the field of "green chemistry," which possess a broad range of potential applications. However, the ecotoxicological profile of these solvents is still poorly known. In this study, ammonium-based deep eutectic solutions with glycerol (2:2), ethylene glycol (1:2), and diethylene glycol (1:2) as hydrogen bond donors in 1:2 proportion were evaluated for their interaction with various biological systems, including gram-positive and negative bacteria, fungi, fish, and human fibroblast cell lines. The DES synthesis was confirmed by Fourier transform infrared spectroscopy analysis, which analyses the interactions between DES precursors for their synthesis. The antimicrobial activity of tetrabutylammonium bromide: ethylene glycol was the most potent, while tetrabutylammonium bromide: diethylene glycol had a higher LC50 against C. carpio fish. Tetrabutylammonium bromide: glycerol was supposed to be the most suitable DES in terms of cell viability percentage (118%) and 2,2-diphenyl-1-picrylhydrazyl scavenging activity (93%). Finally, tetrabutylammonium bromide in glycerol can be considered an eco-friendly solvent due to its lower toxicity in both in vivo and in vitro environments.
Collapse
Affiliation(s)
- Shamaila Inayat
- College of Earth and Environmental Sciences, Quaid e Azam Campus, University of the Punjab, Lahore, Pakistan.,Zoology Department, Kinnaird College for Women, Lahore, Pakistan
| | - Sajid Rashid Ahmad
- College of Earth and Environmental Sciences, Quaid e Azam Campus, University of the Punjab, Lahore, Pakistan
| | - Sana Javaid Awan
- Zoology Department, Kinnaird College for Women, Lahore, Pakistan.
| | - Muhammad Nawshad
- Institute of Basic Medical Sciences, Khyber Medical University, Peshawar, KPK, Pakistan
| | - Qurban Ali
- Department of Plant Breeding and Genetics, University of the Punjab, Lahore, Pakistan.
| |
Collapse
|
3
|
Silva HDA, Feiten M, Raspe D, Silva CDA. Hydrolysis of macauba kernel oil: ultrasound application in the substrates pre-emulsion step and effect of the process variables. AN ACAD BRAS CIENC 2022; 94:e20211267. [PMID: 35857967 DOI: 10.1590/0001-3765202220211267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/05/2021] [Indexed: 11/22/2022] Open
Abstract
The main goal of the present work was to evaluate the application of ultrasound as a previous step to promote the substrates pre-emulsion in the hydrolysis reaction of macauba kernel oil (MKO). The ultrasound effect on the substrates pre-emulsion was evaluated on the free fatty acid (FFA) content, as well as the process variables (reaction time, percentage of catalyst Lipozyme® RM IM, and buffer solution). Reactions carried out with the substrates pre-emulsion presented higher FFA production, up to a 40 wt% increase in 1 hour of reaction, yielding 80 wt% of FFAs in 8 hours. The use of catalyst in the reaction medium, from 5 to 15 wt%, favored the FFAs production in 2 hours of reaction. Addition of 25 to 100 wt% of buffer solution led to 86 wt% of FFAs in 4 hours of reaction. Enzyme recycling resulted in a slight decrease in the FFA content, although the catalyst had maintained 85% of its initial activity after 30 h of use. Therefore, the ultrasound pre-emulsion previous step allowed a more efficient hydrolysis reaction of MKO, leading to an increase of up to 40 wt% on the FFA content, when compared to the hydrolysis without such step.
Collapse
Affiliation(s)
- Heloísa DA Silva
- Universidade Estadual de Maringá, Departamento de Tecnologia, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| | - Mirian Feiten
- Universidade Estadual de Maringá, Departamento de Tecnologia, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| | - Djéssica Raspe
- Universidade Estadual de Maringá, Centro de Ciências Agrárias, Avenida Colombo, 5790, Zona 7, 87020-900 Maringá, PR, Brazil
| | - Camila DA Silva
- Universidade Estadual de Maringá, Departamento de Tecnologia, Avenida Ângelo Moreira da Fonseca, 1800, Parque Danielle, 87506-370 Umuarama, PR, Brazil
| |
Collapse
|
4
|
Preparation, Characterization, and Surface Modification of Cellulose Nanocrystal from Lignocellulosic Biomass for Immobilized Lipase. FIBERS 2022. [DOI: 10.3390/fib10040033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study reports the synthesis of cellulose nanocrystal (CNC) from sugarcane bagasse and rice straw as the matrix for immobilized lipase enzyme. The CNC surface was modified using cetyltrimethylammonium bromide (CTAB) to improve the interaction of CNC with glutaraldehyde so that CNC can immobilize lipase effectively. The results showed that after surface modification of CNC using CTAB with concentrations of 2–10 mM, the crystallinity of CNC slightly decreased. The presence of immobilized lipase on the modified CNC was confirmed visibly by the appearance of dark spots using transmission electron microscopy (TEM). The bond formed between the enzyme and CNC was approved using Fourier transform infrared spectroscopy (FTIR). FTIR results show a new amine group peak in the immobilized lipase, which is not present in the modified CNC itself. The modified CNC, both from bagasse (SB-20 A1-1) and rice straw (RS-20 B1-1), was successfully applied to the immobilized lipase enzyme with a yield of 88%. The observed free enzyme activity was 3.69 µmol/min∙mL. The degree of hydrolysis of canola oil relative to free lipase (100%) from immobilized lipase at lipase SB-20 A1-1 and lipase RS-20 A1-1 was 23% and 30%, respectively. Therefore, this study successfully immobilized lipase and applied it to the hydrolysis of triglycerides.
Collapse
|
5
|
Abd Razak NN, Gew LT, Pérès Y, Cognet P, Aroua MK. Statistical Optimization and Kinetic Modeling of Lipase-Catalyzed Synthesis of Diacylglycerol in the Mixed Solvent System of Acetone/ tert-Butanol. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Nurul Nadiah Abd Razak
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Petaling Jaya, Selangor 47500, Malaysia
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse 31432, France
| | - Lai Ti Gew
- Department of Biological Sciences, School of Medical and Life Sciences, Sunway University, Petaling Jaya, Selangor 47500, Malaysia
| | - Yolande Pérès
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse 31432, France
| | - Patrick Cognet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse 31432, France
| | - Mohamed Kheireddine Aroua
- Centre for Carbon Dioxide Capture and Utilization (CCDCU), School of Engineering and Technology, Sunway University, Petaling Jaya, Selangor 47500, Malaysia
- Department of Engineering, Lancaster University, Lancaster LA1 4YW, United Kingdom
| |
Collapse
|
6
|
Mohammadi-Mahani H, Badoei-dalfard A, Karami Z. Synthesis and characterization of cross-linked lipase-metal hybrid nanoflowers on graphene oxide with increasing the enzymatic stability and reusability. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108038] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
7
|
Evaluation on feedstock, technologies, catalyst and reactor for sustainable biodiesel production: A review. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.03.036] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
8
|
Free Fatty Acids Reduction in Waste Cooking Oil by
Rhodosporidium toruloides
and Simultaneous Carotenoids, Lipids, and PAL Enzyme Production in a Two‐Phase Culture System. EUR J LIPID SCI TECH 2021. [DOI: 10.1002/ejlt.202000354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
9
|
Abstract
Enzymatic biodiesel production has attracted tremendous interest due to its well-recognized advantages. However, high enzyme costs limit the application of enzymatic processes in industrial production. In the past decade, great improvements have been achieved in the lab and the industrial scale, and the production cost of the enzymatic process has been reduced significantly, which has led to it being economically competitive compared to the chemical process. This paper summarizes the progress achieved in enzymatic biodiesel research and commercialization, including reducing enzyme cost, expanding low-quality raw materials, and novel reactor designs. The advantages and disadvantages of different enzymatic processes are also compared.
Collapse
|
10
|
Biojet Fuel Production from Waste of Palm Oil Mill Effluent through Enzymatic Hydrolysis and Decarboxylation. Catalysts 2021. [DOI: 10.3390/catal11010078] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Palm oil mill effluent (POME), wastewater discharged from the palm oil refinery industry, is classified as an environmental pollutant. In this work, a heterogeneous catalytic process for biojet fuel or green kerosene production was investigated. The enzymatic hydrolysis of POME was firstly performed in order to obtain hydrolysed POME (HPOME) rich in free fatty acid (FFA) content. The variations of the water content (30 to 50), temperature (30 to 60 °C) and agitation speed (150 to 250 rpm) were evaluated. The optimal condition for the POME hydrolysis reaction was obtained at a 50% v/v water content, 40 °C and 200 rpm. The highest FFA yield (Y FA) of 90% was obtained. Subsequently, FFA in HPOME was converted into hydrocarbon fuels via a hydrocracking reaction catalysed by Pd/Al2O3 at 400 °C, 10 bars H2 for 1 h under a high pressure autoclave reactor (HPAR). The refined-biofuel yield (94%) and the biojet selectivity (57.44%) were achieved. In this study, we are the first group to successfully demonstrate the POME waste valorisation towards renewable biojet fuel production based on biochemical and thermochemical routes. The process can be applied for the sustainable management of POME waste. It promises to be a high value-added product parallel to the alleviation of wastewater environmental issues.
Collapse
|
11
|
Unugul T, Kutluk T, Gürkaya Kutluk B, Kapucu N. Environmentally friendly processes from coffee wastes to trimethylolpropane esters to be considered biolubricants. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2020; 70:1198-1215. [PMID: 32644908 DOI: 10.1080/10962247.2020.1788664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/18/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
In this study, an eco-friendly renewable biodegradable alternative to petroleum-based oil lubricants was produced using espresso coffee wastes. Waste coffee oil used as raw material was extracted from Espresso coffee wastes by Soxhlet and conventional solvent extraction. Free fatty acids (FFA) were obtained by hydrolysis of the obtained waste oil using Lipozyme TL IM (Thermomyces lanuginosus). The byproduct, glycerol, was also separated from the reaction medium using a separatory funnel. The obtained FFA was used as a raw material in the production of TMP esters. Polyol esters of fatty acids were synthesized as a result of the esterification reaction between FFA and polyol alcohol (trimethylolpropane (TMP)) using Novozyme 435 (Candida antarctica). The amount of FFA in the medium and the FFA conversion was determined by titration with NaOH solution according to ASTM D 5555-95 standard and the FFA composition of espresso coffee oil by GC. The oil content of espresso coffee extract was found to be rich by 16% and the FFA composition was rich in palmitic acid (C16:0 43% by weight) and linoleic acid (C18:2 31% by weight). 31% of FFA was obtained from the coffee oil. Experimental studies have shown that the highest FFA conversion of 88% with 93% TMP tri-ester content was obtained at a temperature of 55°C, 5% enzyme (w/w), non-aqueous media, 3/1 FFA/TMP mole ratio, 500 rpm mixing speed and 24 hours. Implications: Filter coffee wastes, which have become one of the most important biological wastes with an annual production capacity of 6 million tons worldwide; It is targeted to be transformed into environmentally friendly products, as it is important in terms of economy and policies of many developing countries, it is a renewable resource and there is a high amount of waste accumulation day by day. Evaluation of waste filter coffees and oils with this research article; It is envisaged that the bio-lubricating oil used in many sectors will be synthesized and commercialized with an environmentally friendly process.
Collapse
Affiliation(s)
- Tuba Unugul
- Department of Chemical Engineering, Kocaeli University , Kocaeli, Turkey
| | - Togayhan Kutluk
- Department of Chemical Engineering, Kocaeli University , Kocaeli, Turkey
| | | | - Nurcan Kapucu
- Department of Chemical Engineering, Kocaeli University , Kocaeli, Turkey
| |
Collapse
|
12
|
Changmai B, Vanlalveni C, Ingle AP, Bhagat R, Rokhum SL. Widely used catalysts in biodiesel production: a review. RSC Adv 2020; 10:41625-41679. [PMID: 35516564 PMCID: PMC9058015 DOI: 10.1039/d0ra07931f] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 10/23/2020] [Indexed: 01/14/2023] Open
Abstract
An ever-increasing energy demand and environmental problems associated with exhaustible fossil fuels have led to the search for an alternative renewable source of energy. In this context, biodiesel has attracted attention worldwide as an eco-friendly alternative to fossil fuel for being renewable, non-toxic, biodegradable, and carbon-neutral. Although the homogeneous catalyst has its own merits, much attention is currently paid toward the chemical synthesis of heterogeneous catalysts for biodiesel production as it can be tuned as per specific requirement and easily recovered, thus enhancing reusability. Recently, biomass-derived heterogeneous catalysts have risen to the forefront of biodiesel productions because of their sustainable, economical and eco-friendly nature. Furthermore, nano and bifunctional catalysts have emerged as a powerful catalyst largely due to their high surface area, and potential to convert free fatty acids and triglycerides to biodiesel, respectively. This review highlights the latest synthesis routes of various types of catalysts (including acidic, basic, bifunctional and nanocatalysts) derived from different chemicals, as well as biomass. In addition, the impacts of different methods of preparation of catalysts on the yield of biodiesel are also discussed in details. An ever-increasing energy demand and environmental problems associated with exhaustible fossil fuels have led to the search for an alternative energy. In this context, biodiesel has attracted attention worldwide as an alternative to fossil fuel.![]()
Collapse
Affiliation(s)
- Bishwajit Changmai
- Department of Chemistry, National Institute of Technology Silchar, Silchar, 788010, India
| | - Chhangte Vanlalveni
- Department of Botany, Mizoram University, Tanhril, Aizawl, Mizoram, 796001, India
| | - Avinash Prabhakar Ingle
- Department of Biotechnology, Engineering School of Lorena, University of Sao Paulo, Lorena, SP, Brazil
| | - Rahul Bhagat
- Department of Biotechnology, Government Institute of Science, Aurangabad, Maharashtra, India
| | - Samuel Lalthazuala Rokhum
- Department of Chemistry, National Institute of Technology Silchar, Silchar, 788010, India
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK
| |
Collapse
|
13
|
Application of Different Methodologies to Produce Fatty Acid Esters Using the Waste Chicken Fat Catalyzed by Free NS 40116 Lipase. Ind Biotechnol (New Rochelle N Y) 2019. [DOI: 10.1089/ind.2018.0034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
|
14
|
Abstract
Abstract: Microalgae oil has been regarded as a promising feedstock for biodiesel production. However, microalgae oil usually contains some non-lipid components, such as pigments. Microalgae oil could be converted to biodiesel effectively with a two-step process to decrease the negative effect caused by by-product glycerol generated in traditional biodiesel production process. Firstly, microalgae oil was hydrolysed to free fatty acids (FFAs) and then FFAs were converted to methyl ester. In this study, the hydrolysis of microalgae oil from Schizochytrium sp. was systematically investigated and microalgae oil could be hydrolysed effectively to FFAs at both non-catalytic and acid-catalytic conditions. The hydrolysis degree of 97.5% was obtained under non-catalytic conditions of 220 °C and a water to oil ratio of 10:1 (w:w). The hydrolysis degree of 97.1% was obtained with the optimized sulphuric acid catalytic conditions of 95 °C, and a ratio of water to oil 3:1. The lipase Novozym435-mediated esterification with the hydrolysed FFAs was explored and a FAME (Fatty Acids Methyl Ester) yield of 95.1% was achieved. The conversion of different FFAs also was compared and the results indicated that lipase Novozym435-mediated methanolysis was effective for the preparation of biodiesel as well as poly unsaturated fatty acids (PUFAs).
Collapse
|
15
|
Luz GVS, Sousa BASM, Guedes AV, Barreto CC, Brasil LM. Biocides Used as Additives to Biodiesels and Their Risks to the Environment and Public Health: A Review. Molecules 2018; 23:molecules23102698. [PMID: 30347718 PMCID: PMC6222844 DOI: 10.3390/molecules23102698] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 11/16/2022] Open
Abstract
One of the advantages of using biodiesel and its blends with diesel oil is the lower levels of emissions of particulate matter, sulfur dioxide, carbon monoxide, among others, making it less harmful to the environment and to humans. However, this biofuel is susceptible to microbial contamination and biodeterioration. In this sense, studies on the use of effective low toxicity biocides are being carried out, and this work aims to present the latest information (2008⁻2018) available in the scientific databases, on the use of biocides in biodiesel, mainly concerning their toxicity to the environment and public health. The results showed that in relation to the control of microbial contamination, the current scenario is limited, with seven publications, in which the most studied additives were isothiazolinones, oxazolidines, thiocyanates, morpholines, oxaborinanes, thiocarbamates and phenolic antioxidants. Studies regarding direct experiments with humans have not been found, showing the need for more studies in this area, since the potential growth of biodiesel production and consumption in the world is evident. Thus, there are need for more studies on antimicrobial products for use in biodiesel, with good broad-spectrum activity (bactericidal and fungicidal), and further toxicological tests to ensure no or little impact on the environment.
Collapse
Affiliation(s)
- Glécia V S Luz
- Postgraduate Program in Biomedical Engineering, Campus Gama (FGA), University of Brasília (UnB), Brasília 72.444-240, Brazil.
- Nanotechnology Laboratory, University of Brasília at Gama (NANOTEC-FGA/UnB), Brasília 72.444-240, Brazil.
| | - Breno A S M Sousa
- Nanotechnology Laboratory, University of Brasília at Gama (NANOTEC-FGA/UnB), Brasília 72.444-240, Brazil.
| | - Adevilton V Guedes
- Nanotechnology Laboratory, University of Brasília at Gama (NANOTEC-FGA/UnB), Brasília 72.444-240, Brazil.
| | - Cristine C Barreto
- Biotechnology Laboratory, Catholic University of Brasília, Brasília 70790-160, Brazil.
| | - Lourdes M Brasil
- Postgraduate Program in Biomedical Engineering, Campus Gama (FGA), University of Brasília (UnB), Brasília 72.444-240, Brazil.
- Nanotechnology Laboratory, University of Brasília at Gama (NANOTEC-FGA/UnB), Brasília 72.444-240, Brazil.
| |
Collapse
|
16
|
Tang A, Zhang Y, Wei T, Wu J, Li Q, Liu Y. Immobilization of Candida cylindracea Lipase by Covalent Attachment on Glu-Modified Bentonite. Appl Biochem Biotechnol 2018; 187:870-883. [PMID: 30088241 DOI: 10.1007/s12010-018-2838-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 07/02/2018] [Indexed: 02/06/2023]
Abstract
Alkaline Ca-bentonite, obtained upon acid activation and base load of natural bentonite, has a good anion exchange capability. Glu-modified alkaline Ca-bentonites were further prepared by covalent binding with glutamic acid for the immobilization of lipase OF from Candida cylindracea. The obtained immobilized lipase demonstrated a significantly higher catalytic activity than that of unmodified alkaline Ca-bentonite, giving a specific activity of 62.1 U mg-1 protein, twice that of the unmodified carrier, and a total activity of 391.2 U g-1 support, retaining ~ 82.3% of the activity after being reused five times for olive oil emulsion hydrolysis. X-ray diffraction and Fourier transform infrared spectroscopy assays demonstrated the successful immobilization of the lipase on the surface of the bentonite. Upon immobilization, the thermostability of the lipase improved remarkably. At 50 °C, free lipase retained only 6.0% of its initial activity at 6 h, in comparison with 15% for Ca-Bent-lipase and 50% for Glu-Ca-Bent-lipase after 8 h. The Glu-Ca-Bent-lipase is proved as an effective biocatalyst for the biodiesel preparation, improving the transesterification reaction conversion from 52.8% in the condition of free lipase to 99.9% and keeping at 56.2% after being reused five times, while the free lipase was inactive upon two reuses. The above results provide a new route in the use of inexpensive bentonite for the enzyme immobilization.
Collapse
Affiliation(s)
- Aixing Tang
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
- Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China
| | - Yiqin Zhang
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
| | - Tengyou Wei
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
| | - Jian Wu
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
| | - Qingyun Li
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China
- Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China
| | - Youyan Liu
- College of Chemistry and Chemical Engineering, Guangxi University, 100 Daxue Road, Nanning, 530004, Guangxi, China.
- Key Laboratory of Guangxi Biorefinery, Guangxi University, Nanning, 530003, China.
| |
Collapse
|
17
|
Tavares F, Silva EAD, Pinzan F, Canevesi RS, Milinsk MC, Scheufele FB, Borba CE. Hydrolysis of crambe oil by enzymatic catalysis: An evaluation of the operational conditions. BIOCATAL BIOTRANSFOR 2018. [DOI: 10.1080/10242422.2018.1430786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Fernanda Tavares
- School of Chemical Engineering, Western Paraná State University – Unioeste, Toledo-PR, Brazil
| | - Edson A. Da Silva
- School of Chemical Engineering, Western Paraná State University – Unioeste, Toledo-PR, Brazil
| | - Fernanda Pinzan
- School of Chemical Engineering, Western Paraná State University – Unioeste, Toledo-PR, Brazil
| | - Rafael S. Canevesi
- School of Chemical Engineering, Western Paraná State University – Unioeste, Toledo-PR, Brazil
| | - Maria C. Milinsk
- Department of Engineering and Exact Sciences, Federal University of Paraná – UFPR, Palotina-PR, Brazil
| | - Fabiano B. Scheufele
- Department of Engineering and Exact Sciences, Federal University of Paraná – UFPR, Palotina-PR, Brazil
| | - Carlos E. Borba
- School of Chemical Engineering, Western Paraná State University – Unioeste, Toledo-PR, Brazil
| |
Collapse
|
18
|
Tian X, Chen X, Dai L, Du W, Liu D. A novel process of lipase-mediated biodiesel production by the introduction of dimethyl carbonate. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2017.07.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
|
19
|
|
20
|
Liu LH, Shih YH, Liu WL, Lin CH, Huang HY. Enzyme Immobilized on Nanoporous Carbon Derived from Metal-Organic Framework: A New Support for Biodiesel Synthesis. CHEMSUSCHEM 2017; 10:1364-1369. [PMID: 28195433 DOI: 10.1002/cssc.201700142] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/12/2017] [Indexed: 06/06/2023]
Abstract
In this study, nanoporous carbon (NPC) derived from metal-organic framework was used as support for the immobilization of Burkholderia cepacia lipase. The decorated aluminum oxide within the mesoporous NPC improved the enzyme loading efficiency as well as the catalytic ability for the transesterification of soybean oil, thus making it a promising green and sustainable catalytic system for industrial application.
Collapse
Affiliation(s)
- Li-Hao Liu
- Department of Chemistry, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan
| | - Yung-Han Shih
- Department of Chemistry, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan
| | - Wan-Ling Liu
- Department of Chemistry, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan
| | - Chia-Her Lin
- Department of Chemistry, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan
| | - Hsi-Ya Huang
- Department of Chemistry, Chung Yuan Christian University, 200 Chung Pei Road, Chung Li District, Taoyuan City, 320, Taiwan
| |
Collapse
|
21
|
Cui P, Dou TY, Sun YP, Li SY, Feng L, Zou LW, Wang P, Hao DC, Ge GB, Yang L. Efficient enzymatic preparation of esculentoside B following condition optimization by response surface methodology. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2016.04.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
22
|
Juneidi I, Hayyan M, Mohd Ali O. Toxicity profile of choline chloride-based deep eutectic solvents for fungi and Cyprinus carpio fish. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:7648-7659. [PMID: 26743645 DOI: 10.1007/s11356-015-6003-4] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 12/22/2015] [Indexed: 06/05/2023]
Abstract
An investigation on the toxicological assessment of 10 choline chloride (ChCl)-based deep eutectic solvents (DESs) towards four fungi strains and Cyprinus carpio fish was conducted. ChCl was combined with materials from different chemical groups such as alcohols, sugars, acids and others to form DESs. The study was carried out on the individual DES components, their aqueous mixture before DES formation and their formed DESs. The agar disc diffusion method was followed to investigate their toxicity on four fungi strains selected as a model of eukaryotic microorganisms (Phanerochaete chrysosporium, Aspergillus niger, Lentinus tigrinus and Candida cylindracea). Among these DESs, ChCl:ZnCl2 exhibited the highest inhibition zone diameter towards the tested fungi growth in vitro, followed by the acidic group (malonic acid and p-toluenesulfonic acid). Another study was conducted to test the acute toxicity and determine the lethal concentration at 50 % (LC50) of the same DESs on C. carpio fish. The inhibition range and LC50 of DESs were found to be different from their individual components. DESs were found to be less toxic than their mixture or individual components. The LC50 of ChCl:MADES is much higher than that of ChCl:MAMix. Moreover, the DESs acidic group showed a lower inhibition zone on fungi growth. Thus, DESs should be considered as new components with different physicochemical properties and toxicological profiles, and not merely compositions of compounds.
Collapse
Affiliation(s)
- Ibrahim Juneidi
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
- University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Maan Hayyan
- University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, Kuala Lumpur, 50603, Malaysia.
- Department of Civil Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Ozair Mohd Ali
- University of Malaya Medical Centre, University of Malaya, Kuala Lumpur, 50603, Malaysia
| |
Collapse
|
23
|
Borowiecki P, Paprocki D, Dudzik A, Plenkiewicz J. Chemoenzymatic Synthesis of Proxyphylline Enantiomers. J Org Chem 2016; 81:380-95. [DOI: 10.1021/acs.joc.5b01840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Paweł Borowiecki
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
| | - Daniel Paprocki
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
| | - Agnieszka Dudzik
- Jerzy
Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek St. 8, 30-239 Cracow, Poland
| | - Jan Plenkiewicz
- Warsaw University of Technology, Faculty of Chemistry,
Institute of Biotechnology, Koszykowa St. 3, 00-664 Warsaw, Poland
| |
Collapse
|