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Lerin LA, Botti G, Dalpiaz A, Bianchi A, Ferraro L, Chaibi C, Zappaterra F, Meola D, Giovannini PP, Pavan B. Characterization and Hydrolysis Studies of a Prodrug Obtained as Ester Conjugate of Geraniol and Ferulic Acid by Enzymatic Way. Int J Mol Sci 2024; 25:6263. [PMID: 38892454 PMCID: PMC11172460 DOI: 10.3390/ijms25116263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/21/2024] Open
Abstract
Ferulic acid (Fer) and geraniol (Ger) are natural compounds whose antioxidant and anti-inflammatory activity confer beneficial properties, such as antibacterial, anticancer, and neuroprotective effects. However, the short half-lives of these compounds impair their therapeutic activities after conventional administration. We propose, therefore, a new prodrug (Fer-Ger) obtained by a bio-catalyzed ester conjugation of Fer and Ger to enhance the loading of solid lipid microparticles (SLMs) designed as Fer-Ger delivery and targeting systems. SLMs were obtained by hot emulsion techniques without organic solvents. HPLC-UV analysis evidenced that Fer-Ger is hydrolyzed in human or rat whole blood and rat liver homogenates, with half-lives of 193.64 ± 20.93, 20.15 ± 0.75, and 3.94 ± 0.33 min, respectively, but not in rat brain homogenates. Studies on neuronal-differentiated mouse neuroblastoma N2a cells incubated with the reactive oxygen species (ROS) inductor H2O2 evidenced the Fer-Ger ability to prevent oxidative injury, despite the fact that it appears ROS-promoting. The amounts of Fer-Ger encapsulated in tristearin SLMs, obtained in the absence or presence of glucose, were 1.5 ± 0.1%, allowing the control of the prodrug release (glucose absence) or to sensibly enhance its water dissolution rate (glucose presence). These new "green" carriers can potentially prolong the beneficial effects of Fer and Ger or induce neuroprotection as nasal formulations.
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Affiliation(s)
- Lindomar Alberto Lerin
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Giada Botti
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
- Center for Translational Neurophysiology of Speech and Communication (CTNSC@UniFe), Italian Institute of Technology (IIT), Via Fossato di Mortara 19, I-44121 Ferrara, Italy;
| | - Alessandro Dalpiaz
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Anna Bianchi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara and LTTA Center, Via Fossato di Mortara 19, I-44121 Ferrara, Italy;
| | - Chaimae Chaibi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Federico Zappaterra
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Domenico Meola
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Pier Paolo Giovannini
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, Via Luigi Borsari, 46, I-44121 Ferrara, Italy; (L.A.L.); (G.B.); (A.B.); (C.C.); (F.Z.); (D.M.); (P.P.G.)
| | - Barbara Pavan
- Center for Translational Neurophysiology of Speech and Communication (CTNSC@UniFe), Italian Institute of Technology (IIT), Via Fossato di Mortara 19, I-44121 Ferrara, Italy;
- Department of Neuroscience and Rehabilitation—Section of Physiology, University of Ferrara, Via L. Borsari 46, I-44121 Ferrara, Italy
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Duan X, Zhai W, Li X, Wu S, Wang Y, Wang L, Basang W, Zhu Y, Gao Y. Preparation, purification, and biochemical of fat-degrading bacterial enzymes from pig carcass compost and its application. BMC Biotechnol 2023; 23:48. [PMID: 37924095 PMCID: PMC10625193 DOI: 10.1186/s12896-023-00818-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 10/18/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND A lot of kitchen waste oil is produced every day worldwide, leading to serious environmental pollution. As one of the environmental protection methods, microorganisms are widely used treating of various wastes. Lipase, as one of the cleaning agents can effectively degrade kitchen waste oil. The composting process of pig carcasses produces many lipase producing microorganisms, rendering compost products an excellent source for isolating lipase producing microorganisms. To our knowledge, there are no reports isolating of lipase producing strains from the high temperature phase of pig carcass compost. METHODOLOGY Lipase producing strains were isolated using a triglyceride medium and identified by 16S rRNA gene sequencing. The optimal fermentation conditions for maximum lipase yield were gradually optimized by single-factor tests. The extracellular lipase was purified by ammonium sulfate precipitation and Sephadex G-75 gel isolation chromatography. Amino acid sequence analysis, structure prediction, and molecular docking of the purified protein were performed. The pure lipase's enzymatic properties and application potential were evaluated by characterizing its biochemical properties. RESULTS In this study, a lipase producing strain of Bacillus sp. ZF2 was isolated from pig carcass compost products, the optimal fermentation conditions of lipase: sucrose 3 g/L, ammonium sulfate 7 g/L, Mn2+ 1.0 mmol/L, initial pH 6, inoculum 5%, temperature 25 ℃, and fermentation time 48 h. After purification, the specific activity of the purified lipase reached 317.59 U/mg, a 9.78-fold improvement. Lipase had the highest similarity to the GH family 46 chitosanase and molecular docking showed that lipase binds to fat via two hydrogen bonds at Gln146 (A) and Glu203 (A). Under different conditions (temperature, metal ions, organic solvents, and surfactants), lipase can maintain enzymatic activity. Under different types of kitchen oils, lipase has low activity only for 'chicken oil', in treating other substrates, the enzyme activity can exceed 50%. CONCLUSIONS This study reveals the potential of lipase for waste oil removal, and future research will be devoted to the application of lipase.
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Affiliation(s)
- Xinran Duan
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Wei Zhai
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Xintian Li
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Sicheng Wu
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Ye Wang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China
| | - Lixia Wang
- Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102, China
| | - Wangdui Basang
- Institute of Animal Husbandry and Veterinary Medicine, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, 850009, China
| | - Yanbin Zhu
- Institute of Animal Husbandry and Veterinary Medicine, Tibet Academy of Agricultural and Animal Husbandry Science, Lhasa, 850009, China
| | - Yunhang Gao
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, 130118, China.
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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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Choudhary P, Bhowmik A, Verma S, Srivastava S, Chakdar H, Saxena AK. Multi-substrate sequential optimization, characterization and immobilization of lipase produced by Pseudomonas plecoglossicida S7. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:4555-4569. [PMID: 35974269 DOI: 10.1007/s11356-022-22098-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Lipases are important biocatalysts having the third largest global demand after amylases and proteases. In the present study, we have screened 56 potential lipolytic Pseudomonas strains for their lipolytic activity. Pseudomonas plecoglossicida S7 showed highest lipase production with specific activity of 70 U/mg. Statistical optimizations using Plackett Burman design and response surface methodology evaluated fourteen different media supplements including various oilcakes, carbon sources, nitrogen sources, and metal ions which led to a 2.23-fold (156.23 U/mg) increase in lipase activity. Further, inoculum size optimization increased the overall lipase activity by 2.81-folds. The lipase was active over a range of 30-50° C with a pH range (7-10). The enzyme was tolerant to various solvents like chloroform, methanol, 1-butanol, acetonitrile, and dichloromethane and retained 60% of its activity in the presence of sodium dodecyl sulfate (0.5% w/v). The enzyme was immobilized onto Ca-alginate beads which increased thermal (20-60 °C) and pH stability (5-10). The purified enzyme could successfully remove sesame oil stains and degraded upto 25.2% of diesel contaminated soil. These properties of the lipase will help in its applicability in detergent formulations, wastewater treatments, and biodegradation of oil in the environment.
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Affiliation(s)
- Prassan Choudhary
- Microbial Technology Unit-II, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, 275103, India
- Amity Institute of Biotechnology, Amity University, Lucknow, Uttar Pradesh, 226028, India
| | - Arpan Bhowmik
- ICAR-Indian Agricultural Statistics Research Institute (IASRI), New Delhi, 110012, India
| | - Shaloo Verma
- Microbial Technology Unit-II, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, 275103, India
| | - Shilpi Srivastava
- Amity Institute of Biotechnology, Amity University, Lucknow, Uttar Pradesh, 226028, India
| | - Hillol Chakdar
- Microbial Technology Unit-II, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, 275103, India.
| | - Anil Kumar Saxena
- Microbial Technology Unit-II, ICAR-National Bureau of Agriculturally Important Microorganisms, Maunath Bhanjan, 275103, India
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Plant Growth Promoting Endophytic Bacteria Bacillus australimaris BLR41 and Enterobacter kobei BLR45 Enhance the Growth of Medicinal Plant Barleria lupulina Lindl. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2022. [DOI: 10.22207/jpam.16.4.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A total of 50 root colonising bacterial endophytes were identified from a medicinal plant in this investigation (Barleria lupulina), and characterized based on morphologically selected isolates, BLR41 were Gram-negative motile, rod-shaped and BLR45 was Gram-positive, rod-shaped, and light yellow in color. The BLR41 isolate was motile and the BLR45 was positive for indole. The strains BLR41 and BLR45 were positive for citrate, amylase, protease, and lipase. Among all the isolates, BLR41 and BLR45 exhibited higher enzymatic test positive in citrate, amylase lipase, and protease. Furthermore, PGP efficacy as maximum production of zinc in BLR41 isolate and phosphate solubilization in BLR45. Solubilization of the highest zinc (2.80 μg/mL) was obtained by the isolate BLR41, followed by BLR23 and then BLR35. The highest level of phosphate (2.60 μg/mL) was recorded with the BLR45, followed by the BLR07 and BLR18. A consortium of bacterial strains performed better results than individual inoculation. The isolate BLR41 and BLR45 were identified as Bacillus australimaris and Enterobacter kobei following the 16S rRNA sequencing. Among all, seed germination was induced by 93% in consortium BLR41+BLR45, compared to control (T1). An increase in the shoot length by 30% was recorded with the treatment of BLR41+BRL45, BLR41 increase (54%), and BLR45 (35%), respectively. On the other hand, the consortium of mixed cultures, BLR41+BLR45, showed an increased fresh and the weight of dry 65% and 58%. The findings of this study indicate that the consortium of B. australimaris BLR41 and E. kobei BLR45 significantly enhances plant growth in the Pot experiment by zinc and phosphate solubilization properties.
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Priyanka P, Kinsella GK, Henehan GT, Ryan BJ. Listeria monocytogenes is a solvent tolerant organism secreting a solvent stable lipase: potential biotechnological applications. Biotechnol Lett 2022; 44:1139-1147. [PMID: 36006575 PMCID: PMC9481501 DOI: 10.1007/s10529-022-03284-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 07/18/2022] [Indexed: 11/30/2022]
Abstract
Purpose The emerging biobased economy will require robust, adaptable, organisms for the production and processing of biomaterials as well as for bioremediation. Recently, the search for solvent tolerant organisms and solvent tolerant enzymes has intensified. Resilient organisms secreting solvent stable lipases are of particular interest for biotechnological applications. Methods Screening of soil samples for lipase-producing organisms was carried out on Rhodamine B plates. The most productive lipase-producing organisms were further screened for their resistance to solvents commonly used in biotechnological applications. Results In the course of screening, one of the isolated organisms that exhibited extracellular lipase activity, was identified as the human pathogen Listeria monocytogenes through 16S rRNA sequencing. Further exploration revealed that this organism was resistant to solvents ranging from log P − 0.81 to 4.0. Moreover, in the presence of these solvents, L. monocytogenes secreted an extracellular, solvent tolerant, lipase activity. This lipase retained approximately 80% activity when incubated in 30% (v/v) methanol for 24 h. Conclusion These findings identify L. monocytogenes as a potentially useful organism for biotechnological applications. However, the fact that Listeria is a pathogen is problematic and it will require the use of non-pathogenic or attenuated Listeria strains for practical applications. Nonetheless, the ability to adapt to rapidly changing environmental conditions, to grow at low temperatures, to resist solvents and to secrete an extracellular solvent tolerant lipase are unique and highly useful characteristics. The potential application of L. monocytogenes in wastewater bioremediation and plastics degradation is discussed. Supplementary Information The online version contains supplementary material available at 10.1007/s10529-022-03284-5.
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Affiliation(s)
- Priyanka Priyanka
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
| | - Gemma K Kinsella
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland.
| | - Gary T Henehan
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
| | - Barry J Ryan
- School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, Dublin 7, D07 ADY7, Ireland
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Louhasakul Y, Cheirsilp B. Potential use of industrial by-products as promising feedstock for microbial lipid and lipase production and direct transesterification of wet yeast into biodiesel by lipase and acid catalysts. BIORESOURCE TECHNOLOGY 2022; 348:126742. [PMID: 35065222 DOI: 10.1016/j.biortech.2022.126742] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 05/06/2023]
Abstract
This work attempted the conversion of crude glycerol to lipid and lipase by Yarrowia lipolytica and the direct transesterification of wet yeast by its lipase into biodiesel via response surface methodology to enhance the cost-effectiveness of biodiesel production from the lipids. The yeast grew better and accumulated a high amount of lipids on the waste combined with fish waste hydrolysate, but only exhibited high lipase activity on the waste supplemented with surfactants (i.e., gum Arabic, Tween 20, Tween 80). However, the combination of both wastes and Tween 80 further improved growth, lipid productivity, and lipase activity. More importantly, lipase-direct transesterification under optimal conditions (wet cell concentration of 17.97 mg-DCW, methanol loading of 8.21 µL, and hexane loading of 10.26 µL) followed by acid-catalyst transesterification (0.4 M H2SO4), offered high FAME yields (>90%), showing the efficiency of the process when applied for the industrialization of biodiesel production from microbial lipids.
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Affiliation(s)
- Yasmi Louhasakul
- Faculty of Science Technology and Agriculture, Yala Rajabhat University, Yala 95000, Thailand.
| | - Benjamas Cheirsilp
- Center of Excellence in Innovative Biotechnology for Sustainable Utilization of Bioresources, Faculty of Agro-Industry, Prince of Songkla University, Hat-Yai 90112, Thailand
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Sundaramahalingam MA, Amrutha C, Sivashanmugam P, Rajeshbanu J. An encapsulated report on enzyme-assisted transesterification with an allusion to lipase. 3 Biotech 2021; 11:481. [PMID: 34790505 PMCID: PMC8557240 DOI: 10.1007/s13205-021-03003-3] [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: 06/22/2021] [Accepted: 09/26/2021] [Indexed: 10/19/2022] Open
Abstract
Biodiesel is a renewable, sulfur-free, toxic-free, and low carbon fuel which possesses enhanced lubricity. Transesterification is the easiest method employed for the production of biodiesel, in which the oil is transformed into biodiesel. Biocatalyst-mediated transesterification is more advantageous than chemical process because of its non-toxic nature, the requirement of mild reaction conditions, absence of saponification, easy product recovery, and production of high-quality biodiesel. Lipases are found to be the primary enzymes in enzyme-mediated transesterification process. Currently, researchers are using lipases as biocatalyst for transesterification. Lipases are extracted from various sources such as plants, microbes, and animals. Biocatalyst-based biodiesel production is not yet commercialized due to high-cost of purified enzymes and higher reaction time for the production process. However, research works are growing in the area of various cost-effective techniques for immobilizing lipase to improve its reusability. And further reduction in the production cost of lipases can be achieved by genetic engineering techniques. The reduction in reaction time can be achieved through ultrasonic-assisted biocatalytic transesterification. Biodiesel production by enzymatic transesterification is affected by many factors. Various methods have been developed to control these factors and improve biodiesel production. This report summarizes the various sources of lipase, various production strategies for lipase and the lipase-mediated transesterification. It is fully focused on the lipase enzyme and its role in biodiesel production. It also covers the detailed explanation of various influencing factors, which affect the lipase-mediated transesterification along with the limitations and scope of lipase in biodiesel production.
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Affiliation(s)
- M. A. Sundaramahalingam
- Chemical and Biochemical Process Engineering Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015 India
| | - C. Amrutha
- Chemical and Biochemical Process Engineering Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015 India
| | - P. Sivashanmugam
- Chemical and Biochemical Process Engineering Laboratory, Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015 India
| | - J. Rajeshbanu
- Department of Life Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur, Tamil Nadu 610 005 India
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Martins PA, Pacheco TF, de Camargo BR, De Marco JL, Salum TFC. Solid-state fermentation production and characterization of an alkaline lipase from a newly isolated Burkholderia gladioli strain. Prep Biochem Biotechnol 2021; 52:70-79. [PMID: 33941018 DOI: 10.1080/10826068.2021.1910959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The newly isolated Burkholderia gladioli BRM58833 strain was shown to secrete an alkaline lipase highly active and stable in organic solvents. Lipase production was optimized through the cultivation of the strain by solid-state fermentation in wheat bran. The lipase extraction conditions were also optimized. The low-cost extract obtained has shown a high hydrolytic activity of 1096.7 ± 39.3 U·gds-1 (units per gram of dry solids) against pNPP and 374.2 ± 20.4 U·gds-1 against triolein. Proteomic analysis revealed the optimized extract is composed of two esterases and three true lipases, showing a preference for long-chain substrates. The highest activity was obtained at 50 °C and pH 9. However, the extract maintained more than 50% of its maximum activity between pH 8.0 and 10.0 and throughout the whole temperature range evaluated (32-70 °C). The enzymes were inhibited by SDS, EDTA, ZnSO4 and FeCl3 and activated by FeSO4, MgCl2 and BaCl2. The lipases conserved their activity when incubated in solvents as acetonitrile, diethyl ether, n-heptane n-hexane, toluene, methanol and t-butanol. The resistance of these lipases to solvents and expressive thermostability when compared to other lipases, reveal their potential both in hydrolysis reactions and in synthesis of esters.
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Affiliation(s)
- Pedro Alves Martins
- Embrapa Agroenergia, Parque Estação Biológica - PqEB, Brasília-DF, Brazil.,Instituto de Ciências Biológicas, Universidade de Brasília, Brasília-DF, Brazil
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