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Hu Z, Jiao L, Xie X, Xu L, Yan J, Yang M, Yan Y. Characterization of a New Thermostable and Organic Solution-Tolerant Lipase from Pseudomonas fluorescens and Its Application in the Enrichment of Polyunsaturated Fatty Acids. Int J Mol Sci 2023; 24:ijms24108924. [PMID: 37240270 DOI: 10.3390/ijms24108924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/28/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
The search for and characterization of new lipases with excellent properties has always been urgent and is of great importance to meet industrial needs. In this study, a new lipase, lipB, from Pseudomonas fluorescens SBW25, belonging to the lipase subfamily I.3, was cloned and expressed in Bacillus subtilis WB800N. Enzymatic properties studies of recombinant LipB found that it exhibited the highest activity towards p-nitrophenyl caprylate at 40 °C and pH 8.0, retaining 73% of its original activity after incubation at 70 °C for 6 h. In addition, Ca2+, Mg2+, and Ba2+ strongly enhanced the activity of LipB, while Cu2+, Zn2+, Mn2+, and CTAB showed an inhibiting effect. The LipB also displayed noticeable tolerance to organic solvents, especially acetonitrile, isopropanol, acetone, and DMSO. Moreover, LipB was applied to the enrichment of polyunsaturated fatty acids from fish oil. After hydrolyzing for 24 h, it could increase the contents of polyunsaturated fatty acids from 43.16% to 72.18%, consisting of 5.75% eicosapentaenoic acid, 19.57% docosapentaenoic acid, and 46.86% docosahexaenoic acid, respectively. The properties of LipB render it great potential in industrial applications, especially in health food production.
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Affiliation(s)
- Zhiming Hu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Liangcheng Jiao
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoman Xie
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Li Xu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jinyong Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Min Yang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yunjun Yan
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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Nimkande VD, Sivanesan S, Bafana A. Screening, identification, and characterization of lipase-producing halotolerant Bacillus altitudinis Ant19 from Antarctic soil. Arch Microbiol 2023; 205:113. [PMID: 36905427 DOI: 10.1007/s00203-023-03453-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/18/2023] [Accepted: 02/24/2023] [Indexed: 03/12/2023]
Abstract
Potent lipase-producing and halotolerant Bacillus altitudinis Ant19 strain was screened and isolated from Antarctic soil. The isolate showed broad-range lipase activity against different lipid substrates. Presence of lipase activity was confirmed by PCR amplification and sequencing of the lipase gene from Ant19. The study attempted to establish the use of crude extracellular lipase extract as cheap alternative to purified enzyme by characterizing the crude lipase activity and testing it in certain practical applications. Crude lipase extract from Ant19 showed high stability at 5-28 ℃ (> 97%), while lipase activity was noted in a wide temperature range of 20-60 ℃ (> 69%), with optimum activity at 40 ℃ (117.6%). The optimum lipolytic activity was noted at pH 8 with good activity and stability in alkaline conditions (pH 7-10). Moreover, the lipase activity was substantially stable in various solvents, commercial detergents, and surfactants. It retained 97.4% activity in 1% solution of commercial Nirma detergent. Besides, it was non-regiospecific, and active against substrates having different fatty acid chain lengths with preference for shorter chain length. Further, the crude lipase enhanced the oil stain removal efficiency of commercial detergent from 52 to 77.9%, while 66% oil stain was removed using crude lipase alone. Immobilization process improved the storage stability of crude lipase for 90 days. In our knowledge, it is the first study on characterization of lipase activity from B. altitudinis, which has promising applications in various fields.
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Affiliation(s)
- Vijay D Nimkande
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Saravanadevi Sivanesan
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, India
| | - Amit Bafana
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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3
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Liu M, Yu J, Lv B, Hou Y, Liu X, Feng X, Li C. Improving the activity and thermostability of GH2 β-glucuronidases via domain reassembly. Biotechnol Bioeng 2021; 118:1962-1972. [PMID: 33559890 DOI: 10.1002/bit.27710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 01/31/2021] [Indexed: 11/07/2022]
Abstract
Glycoside hydrolase family 2 (GH2) enzymes are generally composed of three domains: TIM-barrel domain (TIM), immunoglobulin-like β-sandwich domain (ISD), and sugar-binding domain (SBD). The combination of these three domains yields multiple structural combinations with different properties. Theoretically, the drawbacks of a given GH2 fold may be circumvented by efficiently reassembling the three domains. However, very few successful cases have been reported. In this study, we used six GH2 β-glucuronidases (GUSs) from bacteria, fungi, or humans as model enzymes and constructed a series of mutants by reassembling the domains from different GUSs. The mutants PGUS-At, GUS-PAA, and GUS-PAP, with reassembled domains from fungal GUSs, showed improved expression levels, activity, and thermostability, respectively. Specifically, compared to the parental enzyme, the mutant PGUS-At displayed 3.8 times higher expression, the mutant GUS-PAA displayed 1.0 time higher catalytic efficiency (kcat /Km ), and the mutant GUS-PAP displayed 7.5 times higher thermostability at 65°C. Furthermore, two-hybrid mutants, GUS-AEA and GUS-PEP, were constructed with the ISD from a bacterial GUS and SBD and TIM domain from fungal GUSs. GUS-AEA and GUS-PEP showed 30.4% and 23.0% higher thermostability than GUS-PAP, respectively. Finally, molecular dynamics simulations were conducted to uncover the molecular reasons for the increased thermostability of the mutant.
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Affiliation(s)
- Mingzhu Liu
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Jing Yu
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Bo Lv
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Yuhui Hou
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Xinhe Liu
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Xudong Feng
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China
| | - Chun Li
- Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering, Ministry of Industry and Information Technology, Institute of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, PR China.,Key Laboratory for Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, PR China.,Center for Synthetic & Systems Biology, Tsinghua University, Beijing, PR China
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4
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Bhavaniramya S, Vanajothi R, Vishnupriya S, Premkumar K, Al-Aboody MS, Vijayakumar R, Baskaran D. Enzyme Immobilization on Nanomaterials for Biosensor and Biocatalyst in Food and Biomedical Industry. Curr Pharm Des 2020; 25:2661-2676. [PMID: 31309885 DOI: 10.2174/1381612825666190712181403] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2019] [Accepted: 07/03/2019] [Indexed: 12/30/2022]
Abstract
Enzymes exhibit a great catalytic activity for several physiological processes. Utilization of immobilized enzymes has a great potential in several food industries due to their excellent functional properties, simple processing and cost effectiveness during the past decades. Though they have several applications, they still exhibit some challenges. To overcome the challenges, nanoparticles with their unique physicochemical properties act as very attractive carriers for enzyme immobilization. The enzyme immobilization method is not only widely used in the food industry but is also a component methodology in the pharmaceutical industry. Compared to the free enzymes, immobilized forms are more robust and resistant to environmental changes. In this method, the mobility of enzymes is artificially restricted to changing their structure and properties. Due to their sensitive nature, the classical immobilization methods are still limited as a result of the reduction of enzyme activity. In order to improve the enzyme activity and their properties, nanomaterials are used as a carrier for enzyme immobilization. Recently, much attention has been directed towards the research on the potentiality of the immobilized enzymes in the food industry. Hence, the present review emphasizes the different types of immobilization methods that is presently used in the food industry and other applications. Various types of nanomaterials such as nanofibers, nanoflowers and magnetic nanoparticles are significantly used as a support material in the immobilization methods. However, several numbers of immobilized enzymes are used in the food industries to improve the processing methods which not only reduce the production cost but also the effluents from the industry.
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Affiliation(s)
- Sundaresan Bhavaniramya
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
| | - Ramar Vanajothi
- Department of Biomedical Science, Bharathidasan University, Trichy-620024, Tamil Nadu, India
| | - Selvaraju Vishnupriya
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
| | - Kumpati Premkumar
- Department of Biomedical Science, Bharathidasan University, Trichy-620024, Tamil Nadu, India
| | - Mohammad S Al-Aboody
- Department of Biology, College of Science in Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Rajendran Vijayakumar
- Department of Biology, College of Science in Zulfi, Majmaah University, Majmaah 11952, Saudi Arabia
| | - Dharmar Baskaran
- College of Food and Dairy Technology, Tamil Nadu Veterinary and Animal Sciences, University, Chennai-600052, Tamil Nadu, India
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Jiang T, Hou Y, Zhang T, Feng X, Li C. Construction of a CaHPO 4-PGUS1 hybrid nanoflower through protein-inorganic self-assembly, and its application in glycyrrhetinic acid 3- O-mono- β-d-glucuronide preparation. Front Chem Sci Eng 2019; 13:554-562. [PMID: 32215221 PMCID: PMC7089396 DOI: 10.1007/s11705-019-1834-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 02/24/2019] [Indexed: 01/10/2023]
Abstract
Glycyrrhetinic acid 3-O-mono-β-d-glucuronide (GAMG), an important pharmaceutical intermediate and functional sweetener, has broad applications in the food and medical industries. A green and cost-effective method for its preparation is highly desired. Using site-directed mutagenesis, we previously obtained a variant of β-glucuronidase from Aspergillus oryzae Li-3 (PGUS1), which can specifically transform glycyrrhizin (GL) into GAMG. In this study, a facile method was established to prepare a CaHPO4-PGUS1 hybrid nanoflower for enzyme immobilization, based on protein-inorganic hybrid self-assembly. Under optimal conditions, 1.2 mg of a CaHPO4-PGUS1 hybrid nanoflower precipitate with 71.2% immobilization efficiency, 35.60 mg·g-1 loading capacity, and 118% relative activity was obtained. Confocal laser scanning microscope and scanning electron microscope results showed that the enzyme was encapsulated in the CaHPO4-PGUS1 hybrid nanoflower. Moreover, the thermostability of the CaHPO4-PGUS1 hybrid nanoflower at 55°C was improved, and its half-life increased by 1.3 folds. Additionally, the CaHPO4-PGUS1 hybrid nanoflower was used for the preparation of GAMG through GL hydrolysis, with the conversion rate of 92% in 8 h, and after eight consecutive runs, it had 60% of its original activity.
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Affiliation(s)
- Tian Jiang
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Yuhui Hou
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Tengjiang Zhang
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Xudong Feng
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 China
| | - Chun Li
- Institute for Synthetic Biosystem/Department of Biochemical Engineering, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081 China
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Li J, Shen W, Fan G, Li X. Screening, purification and characterization of lipase from Burkholderia pyrrocinia B1213. 3 Biotech 2018; 8:387. [PMID: 30175024 DOI: 10.1007/s13205-018-1414-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/20/2018] [Indexed: 12/14/2022] Open
Abstract
A lipase producing strain B1213 isolated from soil was identified as Burkholderia pyrrocinia based on 16S rRNA gene and recA sequeence analysis, making this the first report on the presence of a lipase from B. pyrrocinia. Under an aqueous two-phase purification strategy, which included (ATPE)-ion-exchange chromatography (IEC)-gel and filtration chromatography (GFC), the specific activity of the 35-kDa lipase was determined to be 875.7 U/mg protein. The optimum pH and temperature of this lipase was pH 8.0 and 50 °C, respectively. The lipase retained > 85% activity in isopropanol and acetone at 30 °C for 10 min but the activity was reduced to 10.6% in n-hexane. Mg2+, Al3+, Mn2+, and Fe3+ enhanced lipase activity at both 1 mM and 5 mM concentrations. p-NPP, a long-chain acyl group 4-NP ester, appeared to be a good substrate candidate.
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Affiliation(s)
- Jinlong Li
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Fucheng Road, Haidian District, Beijing, 100048 People's Republic of China
- Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
| | - Weijia Shen
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Fucheng Road, Haidian District, Beijing, 100048 People's Republic of China
- Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
| | - Guangsen Fan
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Fucheng Road, Haidian District, Beijing, 100048 People's Republic of China
- Beijing Key Laboratory of Flavor Chemistry, Beijing, 100048 People's Republic of China
| | - Xiuting Li
- 1Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Fucheng Road, Haidian District, Beijing, 100048 People's Republic of China
- Beijing Higher Institution Engineering Research Center of Food Additives and Ingredients, Beijing, 100048 People's Republic of China
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7
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Almeida EL, Andrade CMG, Andreo dos Santos O. Production of Biodiesel Via Catalytic Processes: A Brief Review. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2018. [DOI: 10.1515/ijcre-2017-0130] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Abstract
Currently, there is a worldwide concern, not only with the exhaustion of diesel oil, but also with the environmental damages caused by this fuel, from the process of extracting oil to consumption. The emission of the gases from the combustion process of this fuel are harmful to the health of living beings and contribute directly to the worsening of the greenhouse effect. Biodiesel appears in this context as a possible substitute for diesel. Thus, the main objective of this work was to carry out a bibliographical review of the main catalytic processes available in the literature for the production of biodiesel, respectively, the main chemical reactions involved in these processes, being: the esterification and transesterification reaction. Among the catalytic processes, the alkaline, acid and enzymatic catalysis was highlighted. And, among the main raw materials used in the production process are: vegetable oils, animal fats and oils and fats; as economically and environmentally viable alternatives. Still referring to the raw materials, there are the alcohols: methanol and ethanol, which are frequently used. In this way, the most varied catalytic methods present in the literature were presented. For each catalytic process, the work was presented, which developed methodologies for: homogeneous, heterogeneous catalysts, dispersed or immobilized, with the most diverse raw materials, which are currently used or that may be used in the process of obtaining biodiesel in the future. Industrial scale.
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Hirata DB, Albuquerque TL, Rueda N, Sánchez-Montero JM, Garcia-Verdugo E, Porcar R, Fernandez-Lafuente R. Advantages of Heterofunctional Octyl Supports: Production of 1,2-Dibutyrin by Specific and Selective Hydrolysis of Tributyrin Catalyzed by Immobilized Lipases. ChemistrySelect 2016. [DOI: 10.1002/slct.201600274] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Daniela B. Hirata
- Departamento de Biocatálisis; Instituto de Catálisis-CSIC; C/ Marie Curie 2.; Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
- Instituto de Química; Universidade Federal de Alfenas; 37130-000 Alfenas, MG Brazil
| | - Tiago L. Albuquerque
- Departamento de Biocatálisis; Instituto de Catálisis-CSIC; C/ Marie Curie 2.; Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
- Departamento de Engenharia Química, Universidade Federal Do Ceará; Campus Do Pici; CEP 60455-760 Fortaleza, CE Brazil
| | - Nazzoly Rueda
- Departamento de Biocatálisis; Instituto de Catálisis-CSIC; C/ Marie Curie 2.; Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
- Escuela de Química; Grupo de investigación en Bioquímica y Microbiología (GIBIM); Edificio Camilo Torres 210; Universidad Industrial de Santander; Bucaramanga Colombia
| | - Jose M. Sánchez-Montero
- Organic and Pharmaceutical Chemistry Dpt. Biotransformations Group. Facultad de Farmacia; UCM; 28040 Madrid
| | - Eduardo Garcia-Verdugo
- Dtp. Quimica Inorganica y Organica; Universidad Jaume I; Avda. Sos Baynat s/n 12071 Castellón Spain
| | - Raul Porcar
- Organic and Pharmaceutical Chemistry Dpt. Biotransformations Group. Facultad de Farmacia; UCM; 28040 Madrid
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis; Instituto de Catálisis-CSIC; C/ Marie Curie 2.; Campus UAM-CSIC; Cantoblanco 28049 Madrid Spain
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9
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Feng X, Tang H, Han B, Lv B, Li C. Enhancing the Thermostability of β-Glucuronidase by Rationally Redesigning the Catalytic Domain Based on Sequence Alignment Strategy. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00535] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Xudong Feng
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Heng Tang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Beijia Han
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Bo Lv
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Chun Li
- School of Life Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
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10
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Marques RV, Paz MFD, Duval EH, Corrêa LB, Corrêa ÉK. Staphylococcus xylosus fermentation of pork fatty waste: raw material for biodiesel production. Braz J Microbiol 2016; 47:675-9. [PMID: 27266633 PMCID: PMC4927651 DOI: 10.1016/j.bjm.2016.04.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/17/2016] [Indexed: 11/30/2022] Open
Abstract
The need for cleaner sources of energy has stirred research into utilising alternate fuel sources with favourable emission and sustainability such as biodiesel. However, there are technical constraints that hinder the widespread use of some of the low cost raw materials such as pork fatty wastes. Currently available technology permits the use of lipolytic microorganisms to sustainably produce energy from fat sources; and several microorganisms and their metabolites are being investigated as potential energy sources. Thus, the aim of this study was to characterise the process of Staphylococcus xylosus mediated fermentation of pork fatty waste. We also wanted to explore the possibility of fermentation effecting a modification in the lipid carbon chain to reduce its melting point and thereby act directly on one of the main technical barriers to obtaining biodiesel from this abundant source of lipids. Pork fatty waste was obtained from slaughterhouses in southern Brazil during evisceration of the carcasses and the kidney casing of slaughtered animals was used as feedstock. Fermentation was performed in BHI broth with different concentrations of fatty waste and for different time periods which enabled evaluation of the effect of fermentation time on the melting point of swine fat. The lowest melting point was observed around 46 °C, indicating that these chemical and biological reactions can occur under milder conditions, and that such pre-treatment may further facilitate production of biodiesel from fatty animal waste.
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Affiliation(s)
| | | | - Eduarda Hallal Duval
- Animal Products Inspection Laboratory, Federal University of Pelotas, Campus Capão do Leão, Capão do Leão, RS, Brazil
| | | | - Érico Kunde Corrêa
- Laboratory of Wastes, Federal University of Pelotas, Pelotas, RS, Brazil
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11
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Kinetics of layered double hydroxide catalyzed esterification of fatty acids with glycerol. REACTION KINETICS MECHANISMS AND CATALYSIS 2015. [DOI: 10.1007/s11144-015-0942-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Marques RV, Duval EH, Corrêa LB, Corrêa ÉK. Increase of Unsaturated Fatty Acids (Low Melting Point) of Broiler Fatty Waste Obtained Through Staphylococcus xylosus Fermentation. Curr Microbiol 2015; 71:601-6. [PMID: 26289722 DOI: 10.1007/s00284-015-0890-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/11/2015] [Indexed: 10/23/2022]
Abstract
The increasing rise in the production of meat around the world causes a significant generation of agro-industrial waste--most of it with a low value added. Fatty wastes have the potential of being converted into biodiesel, given the overcome of technological and economical barriers, as well as its presentation in solid form. Therefore, the aim of this work was to investigate the capacity of Staphylococcus xylosus strains to modify the chemical structure of chicken fatty wastes intending to reduce the melting points of the wastes to mild temperatures, thereby breaking new ground in the production of biodiesel from these sources in an economically attractive and sustainable manner. The effects in time of fermentation and concentration of the fat in the medium were investigated, assessing the melting point and profile of fatty acids. The melting temperature showed a decrease of approximately 22 °C in the best operational conditions, due to reduction in the content of saturated fatty acids (high melting point) and increase of unsaturated fatty acids (low melting point).
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Affiliation(s)
- Roger V Marques
- Laboratory of Wastes, Engineering Center, Federal University of Pelotas, Rua Benjamin Constant, 989, Sala 200, Pelotas/RS, 96010020, Brazil.
| | - Eduarda H Duval
- Animal Products Inspection Laboratory, Federal University of Pelotas, Campus Capão do Leão, Capão do Leão/RS, 96010900, Brazil
| | - Luciara B Corrêa
- Laboratory of Wastes, Engineering Center, Federal University of Pelotas, Rua Benjamin Constant, 989, Sala 200, Pelotas/RS, 96010020, Brazil
| | - Érico K Corrêa
- Laboratory of Wastes, Engineering Center, Federal University of Pelotas, Rua Benjamin Constant, 989, Sala 200, Pelotas/RS, 96010020, Brazil
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13
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Immobilized lipase on micro-porous biosilica for enzymatic transesterification of algal oil. Chem Eng Res Des 2015. [DOI: 10.1016/j.cherd.2014.12.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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14
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