101
|
Siebenhaller S, Muhle-Goll C, Luy B, Kirschhöfer F, Brenner-Weiss G, Hiller E, Günther M, Rupp S, Zibek S, Syldatk C. Sustainable enzymatic synthesis of glycolipids in a deep eutectic solvent system. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2017.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
102
|
Gao J, Yin L, Feng K, Zhou L, Ma L, He Y, Wang L, Jiang Y. Lipase Immobilization through the Combination of Bioimprinting and Cross-Linked Protein-Coated Microcrystal Technology for Biodiesel Production. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b03273] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Gao
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
- Hebei
Provincial Key Lab of Green Chemical Technology and High Efficient
Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Luyan Yin
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Kai Feng
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Liya Zhou
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
- Hebei
Provincial Key Lab of Green Chemical Technology and High Efficient
Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Li Ma
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
- Hebei
Provincial Key Lab of Green Chemical Technology and High Efficient
Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Ying He
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
- Hebei
Provincial Key Lab of Green Chemical Technology and High Efficient
Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Lihui Wang
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| | - Yanjun Jiang
- School
of Chemical Engineering and Technology, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
- Hebei
Provincial Key Lab of Green Chemical Technology and High Efficient
Energy Saving, Hebei University of Technology, 8 Guangrong Road, Hongqiao District, Tianjin 300130, PR China
| |
Collapse
|
103
|
Production of Biodiesel Using Immobilized Lipase and the Characterization of Different Co-Immobilizing Agents and Immobilization Methods. SUSTAINABILITY 2016. [DOI: 10.3390/su8090764] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
104
|
Khanahmadi S, Yusof F, Chyuan Ong H, Amid A, Shah H. Cocoa pod husk: A new source of CLEA-lipase for preparation of low-cost biodiesel: An optimized process. J Biotechnol 2016; 231:95-105. [DOI: 10.1016/j.jbiotec.2016.05.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 05/04/2016] [Accepted: 05/12/2016] [Indexed: 11/27/2022]
|
105
|
Ungcharoenwiwat P, Canyuk B, H-Kittikun A. Synthesis of jatropha oil based wax esters using an immobilized lipase from Burkholderia sp. EQ3 and Lipozyme RM IM. Process Biochem 2016. [DOI: 10.1016/j.procbio.2015.12.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
106
|
Immobilization of Alcaligenes sp. lipase as catalyst for the transesterification of vegetable oils to produce biodiesel. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.06.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
107
|
Zhang Y, Xia X, Duan M, Han Y, Liu J, Luo M, Zhao C, Zu Y, Fu Y. Green deep eutectic solvent assisted enzymatic preparation of biodiesel from yellow horn seed oil with microwave irradiation. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcatb.2015.10.013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
108
|
de Lima AL, Ronconi CM, Mota CJA. Heterogeneous basic catalysts for biodiesel production. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01989c] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We review the recent advances in the synthesis and utilization of heterogeneous basic catalysts for biodiesel production.
Collapse
Affiliation(s)
- Ana Lúcia de Lima
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
| | - Célia M. Ronconi
- Instituto de Química
- Outeiro São João Batista, s/n o
- Campus do Valonguinho
- Universidade Federal Fluminense
- Rio de Janeiro
| | - Claudio J. A. Mota
- Instituto de Química
- Universidade Federal do Rio de Janeiro
- Rio de Janeiro
- Brazil
- Escola de Química
| |
Collapse
|
109
|
Rueda N, Santos JCD, Ortiz C, Barbosa O, Fernandez-Lafuente R, Torres R. Chemical amination of lipases improves their immobilization on octyl-glyoxyl agarose beads. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.05.027] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
110
|
Nde DB, Astete C, Boldor D. ESolvent-free, enzyme-catalyzed biodiesel production from mango, neem, and shea oils via response surface methodology. AMB Express 2015; 5:83. [PMID: 26698315 PMCID: PMC4689724 DOI: 10.1186/s13568-015-0172-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Accepted: 12/11/2015] [Indexed: 11/10/2022] Open
Abstract
Mango, neem and shea kernels produce non-conventional oils whose potentials are not fully exploited. To give an added value to these oils, they were transesterified into biodiesel in a solvent-free system using immobilized enzyme lipozyme from Mucor miehei. The Doehlert experimental design was used to evaluate the methyl ester (ME) yields as influenced by enzyme concentration-EC, temperature-T, added water content-AWC, and reaction time-RT. Biodiesel yields were quantified by (1)H NMR spectroscopy and subsequently modeled by a second order polynomial equation with interactions. Lipozyme enzymes were more tolerant to high temperatures in neem and shea oils reaction media compared to that of mango oil. The optimum reaction conditions EC, T, AWC, and RT assuring near complete conversion were as follows: mango oil 7.25 %, 36.6 °C, 10.9 %, 36.4 h; neem oil EC = 7.19 %, T = 45.7 °C, AWC = 8.43 %, RT = 25.08 h; and shea oil EC = 4.43 %, T = 45.65 °C, AWC = 6.21 % and RT = 25.08 h. Validation experiments of these optimum conditions gave ME yields of 98.1 ± 1.0, 98.5 ± 1.6 and 99.3 ± 0.4 % for mango, neem and shea oils, respectively, which all met ASTM biodiesel standards.
Collapse
Affiliation(s)
- Divine Bup Nde
- BAE Department, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA.
- Department of Food and Bio-resource Technology, College of Technology, University of Bamenda, P.O. Box 39, Bamenda, Cameroon.
| | - Carlos Astete
- BAE Department, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA.
| | - Dorin Boldor
- BAE Department, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA.
| |
Collapse
|
111
|
Rastian Z, Khodadadi AA, Guo Z, Vahabzadeh F, Mortazavi Y. Plasma Functionalized Multiwalled Carbon Nanotubes for Immobilization of Candida antarctica Lipase B: Production of Biodiesel from Methanolysis of Rapeseed Oil. Appl Biochem Biotechnol 2015; 178:974-89. [DOI: 10.1007/s12010-015-1922-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 11/05/2015] [Indexed: 11/29/2022]
|
112
|
Manoel EA, Ribeiro MF, dos Santos JC, Coelho MAZ, Simas AB, Fernandez-Lafuente R, Freire DM. Accurel MP 1000 as a support for the immobilization of lipase from Burkholderia cepacia : Application to the kinetic resolution of myo -inositol derivatives. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.06.023] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
113
|
Babaki M, Yousefi M, Habibi Z, Brask J, Mohammadi M. Preparation of highly reusable biocatalysts by immobilization of lipases on epoxy-functionalized silica for production of biodiesel from canola oil. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.04.020] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
114
|
Palanisamy K, Kuppamuthu K, Jeyaseelan A. Bacillus sp. PS35 Lipase-Immobilization on Styrene-Divinyl Benzene Resin and Application in Fatty Acid Methyl Ester Synthesis. IRANIAN JOURNAL OF BIOTECHNOLOGY 2015; 13:39-46. [PMID: 28959298 DOI: 10.15171/ijb.1225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Lipase is an enzyme with immense application potential. Ester synthesis by lipase catalysis in organic media is an area of key industrial relevance. Enzymatic preparations with traits that cater to the needs of this function are hence being intensely researched. OBJECTIVE The objectives of the study were to immobilize the lipase from Bacillus sp. PS35 by cross-linking and adsorption onto styrene-divinyl benzene (Sty-Dvb) hydrophobic resin and to comparatively characterize the free and immobilized lipase preparations. The work also aimed to apply the immobilized lipase for catalysing the fatty acid methyl ester (FAME) synthesis from palm oil and optimize the process parameters for maximizing the yield. MATERIALS AND METHODS In this study, the purified lipase from Bacillus sp. PS35 was immobilized by adsorption onto styrene-divinyl benzene hydrophobic resin with gluteraldehyde cross-linking. RESULTS The immobilized enzyme showed better pH and temperature stabilities than the free lipase. Organic solvent stability was also enhanced, with the relative activity in the presence of methanol being shifted from 53% to 81%, thereby facilitating the enzyme's application in fatty acid methyl ester synthesis. It exhibited remarkable storage stability over a 30-day period and after 20 repetitive uses. Cross-linking also reduced enzyme leakage by 49%. The immobilized lipase was then applied for biodiesel production from palm oil. Methanol and oil molar ratio of 5:1, three step methanol additions, and an incubation temperature of 50°C were established to be the ideal conditions favoring the transesterification reaction, resulting in 97% methyl ester yield. CONCLUSIONS These promising results offer scope for further investigation and process scale up, permitting the enzyme's commercial application in a practically feasible and economically agreeable manner.
Collapse
Affiliation(s)
- Kanmani Palanisamy
- Department of Biotechnology, Kumaraguru College of Technology, Tamilnadu, India
| | | | - Aravind Jeyaseelan
- Department of Biotechnology, Kumaraguru College of Technology, Tamilnadu, India
| |
Collapse
|
115
|
Panizza P, Cesarini S, Diaz P, Rodríguez Giordano S. Saturation mutagenesis in selected amino acids to shift Pseudomonas sp. acidic lipase Lip I.3 substrate specificity and activity. Chem Commun (Camb) 2015; 51:1330-3. [PMID: 25482450 DOI: 10.1039/c4cc08477b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Several Pseudomonas sp. CR611 Lip I.3 mutants with overall increased activity and a shift towards longer chain substrates were constructed. Substitution of residues Y29 and W310 by smaller amino acids provided increased activity on C18-substrates. Residues G152 and S154, modified to study their influence on interfacial activation, displayed a five and eleven fold increased activity.
Collapse
Affiliation(s)
- Paola Panizza
- Bioscience Department, Facultad de Química, Universidad de la República (UdelaR), Montevideo, Uruguay.
| | | | | | | |
Collapse
|
116
|
Purification and bio-chemical characterization of a solvent-tolerant and highly thermostable lipase of Bacillus licheniformis strain SCD11501. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s40011-015-0612-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
117
|
Venditti I, Palocci C, Chronopoulou L, Fratoddi I, Fontana L, Diociaiuti M, Russo MV. Candida rugosa lipase immobilization on hydrophilic charged gold nanoparticles as promising biocatalysts: Activity and stability investigations. Colloids Surf B Biointerfaces 2015; 131:93-101. [DOI: 10.1016/j.colsurfb.2015.04.046] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/16/2015] [Accepted: 04/20/2015] [Indexed: 12/15/2022]
|
118
|
Two-step biocatalytic process using lipase and whole cell catalysts for biodiesel production from unrefined jatropha oil. Biotechnol Lett 2015; 37:1959-63. [PMID: 26063623 DOI: 10.1007/s10529-015-1883-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 06/03/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To avoid lipase deactivation by methanol in the enzymatic transesterification process, a two-step biocatalytic process for biodiesel production from unrefined jatropha oil was developed. RESULTS Unrefined jatropha oil was first hydrolyzed to free fatty acids (FFAs) by the commercial enzyme Candida rugosa lipase. The maximum yield achieved of FFAs 90.3% at 40 °C, water/oil ratio 0.75:1 (v/v), lipase content 2% (w/w) after 8 h reaction. After hydrolysis, the FFAs were separated and converted to biodiesel by using Rhizopus oryzae IFO4697 cells immobilized within biomass support particles as a whole-cell biocatalyst. Molecular sieves (3 Å) were added to the esterification reaction mixture to remove the byproduct water. The maximum fatty acid methyl ester yield reached 88.6% at 35 °C, molar ratio of methanol to FFAs 1.2:1, molecular sieves (3 Å) content 60% (w/w) after 42 h. In addition, both C. rugosa lipase and R. oryzae whole cell catalyst in the process showed excellent reusability, retaining 89 and 79% yields, respectively, even after six batches of reactions. CONCLUSION This novel process, combining the advantages of enzyme and whole cell catalysts, saved the consumption of commercial enzyme and avoid enzyme deactivation by methanol.
Collapse
|
119
|
Sattari S, Vahabzadeh F, Aghtaei HK. PERFORMANCE OF LOOFA-IMMOBILIZED Rhizopus oryzae IN THE ENZYMATIC PRODUCTION OF BIODIESEL WITH USE OF OLEIC ACID IN n-HEXANE MEDIUM. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2015. [DOI: 10.1590/0104-6632.20150322s00003525] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- S. Sattari
- Amirkabir University of Technology (Tehran Polytechnic), Iran
| | - F. Vahabzadeh
- Amirkabir University of Technology (Tehran Polytechnic), Iran
| | - H. K. Aghtaei
- Amirkabir University of Technology (Tehran Polytechnic), Iran
| |
Collapse
|
120
|
Structural insights into methanol-stable variants of lipase T6 from Geobacillus stearothermophilus. Appl Microbiol Biotechnol 2015; 99:9449-61. [DOI: 10.1007/s00253-015-6700-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 05/07/2015] [Accepted: 05/16/2015] [Indexed: 10/23/2022]
|
121
|
Su J, Zhang F, Sun W, Karuppiah V, Zhang G, Li Z, Jiang Q. A new alkaline lipase obtained from the metagenome of marine sponge Ircinia sp. World J Microbiol Biotechnol 2015; 31:1093-102. [PMID: 25921581 DOI: 10.1007/s11274-015-1859-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Accepted: 04/23/2015] [Indexed: 11/24/2022]
Abstract
Microorganisms associated with marine sponges are potential resources for marine enzymes. In this study, culture-independent metagenomic approach was used to isolate lipases from the complex microbiome of the sponge Ircinia sp. obtained from the South China Sea. A metagenomic library was constructed, containing 6568 clones, and functional screening on 1 % tributyrin agar resulted in the identification of a positive lipase clone (35F4). Following sequence analysis 35F4 clone was found to contain a putative lipase gene lipA. Sequence analysis of the predicted amino acid sequence of LipA revealed that it is a member of subfamily I.1 of lipases, with 63 % amino acid similarity to the lactonizing lipase from Aeromonas veronii (WP_021231793). Based on the predicted secondary structure, LipA was predicted to be an alkaline enzyme by sequence/structure analysis. Heterologous expression of lipA in E. coli BL21 (DE3) was performed and the characterization of the recombinant enzyme LipA showed that it is an alkaline enzyme with high tolerance to organic solvents. The isolated lipase LipA was active in the broad alkaline range, with the highest activity at pH 9.0, and had a high level of stability over a pH range of 7.0-12.0. The activity of LipA was increased in the presence of 5 mM Ca(2+) and some organic solvents, e.g. methanol, acetone and isopropanol. The optimum temperature for the activity of LipA is 40 °C and the molecular weight of LipA was determined to be ~30 kDa by SDS-PAGE. LipA is an alkaline lipase and shows good tolerance to some organic solvents, which make it of potential utility in the detergent industry and enzyme mediated organic synthesis. The result of this study has broadened the diversity of known lipolytic genes and demonstrated that marine sponges are an important source for new enzymes.
Collapse
Affiliation(s)
- Jing Su
- Marine Biotechnology Laboratory, State Key Laboratory of Microbial Metabolism and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, People's Republic China
| | | | | | | | | | | | | |
Collapse
|
122
|
Kovalenko GA, Perminova LV, Beklemishev AB, Yakovleva EY, Pykhtina MB. Heterogeneous biocatalytic processes of vegetable oil interesterification to biodiesel. CATALYSIS IN INDUSTRY 2015. [DOI: 10.1134/s2070050415010109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
123
|
Marine extremophiles: a source of hydrolases for biotechnological applications. Mar Drugs 2015; 13:1925-65. [PMID: 25854643 PMCID: PMC4413194 DOI: 10.3390/md13041925] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/22/2015] [Accepted: 03/25/2015] [Indexed: 12/26/2022] Open
Abstract
The marine environment covers almost three quarters of the planet and is where evolution took its first steps. Extremophile microorganisms are found in several extreme marine environments, such as hydrothermal vents, hot springs, salty lakes and deep-sea floors. The ability of these microorganisms to support extremes of temperature, salinity and pressure demonstrates their great potential for biotechnological processes. Hydrolases including amylases, cellulases, peptidases and lipases from hyperthermophiles, psychrophiles, halophiles and piezophiles have been investigated for these reasons. Extremozymes are adapted to work in harsh physical-chemical conditions and their use in various industrial applications such as the biofuel, pharmaceutical, fine chemicals and food industries has increased. The understanding of the specific factors that confer the ability to withstand extreme habitats on such enzymes has become a priority for their biotechnological use. The most studied marine extremophiles are prokaryotes and in this review, we present the most studied archaea and bacteria extremophiles and their hydrolases, and discuss their use for industrial applications.
Collapse
|
124
|
Zhang W, Tang Y, Liu J, Jiang L, Huang W, Huo FW, Tian D. Colorimetric assay for heterogeneous-catalyzed lipase activity: enzyme-regulated gold nanoparticle aggregation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:39-42. [PMID: 25516269 DOI: 10.1021/jf505339q] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Lipase is a neglected enzyme in the field of gold nanoparticle-based enzyme assays. This paper reports a novel colorimetric probe to rapidly visualize lipase activities by using Tween 20 functioned GNPs (Tween 20-GNPs) as a reporter. The present strategy hence could overcome the limitations caused by the heterogeneous interface in lipase assay. Catalytic hydrolytic cleavage of the ester bond in Tween 20-GNPs by lipase will trigger the rapid aggregation of GNPs at a high salt solution. The color change from red to purple could be used to sense the activity of lipase. The detection limit (3σ) is as low as 2.8 × 10-2 mg/mL. A preliminary enzyme activity screening was carried out for seven commercially purchased lipase samples. It also has been successfully applied to detecting lipase in fermentation broth of Bacillus subtilis without any pretreatment.
Collapse
|
125
|
Dynamics of the lipid droplet proteome of the Oleaginous yeast rhodosporidium toruloides. EUKARYOTIC CELL 2015; 14:252-64. [PMID: 25576482 DOI: 10.1128/ec.00141-14] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Lipid droplets (LDs) are ubiquitous organelles that serve as a neutral lipid reservoir and a hub for lipid metabolism. Manipulating LD formation, evolution, and mobilization in oleaginous species may lead to the production of fatty acid-derived biofuels and chemicals. However, key factors regulating LD dynamics remain poorly characterized. Here we purified the LDs and identified LD-associated proteins from cells of the lipid-producing yeast Rhodosporidium toruloides cultured under nutrient-rich, nitrogen-limited, and phosphorus-limited conditions. The LD proteome consisted of 226 proteins, many of which are involved in lipid metabolism and LD formation and evolution. Further analysis of our previous comparative transcriptome and proteome data sets indicated that the transcription level of 85 genes and protein abundance of 77 proteins changed under nutrient-limited conditions. Such changes were highly relevant to lipid accumulation and partially confirmed by reverse transcription-quantitative PCR. We demonstrated that the major LD structure protein Ldp1 is an LD marker protein being upregulated in lipid-rich cells. When overexpressed in Saccharomyces cerevisiae, Ldp1 localized on the LD surface and facilitated giant LD formation, suggesting that Ldp1 plays an important role in controlling LD dynamics. Our results significantly advance the understanding of the molecular basis of lipid overproduction and storage in oleaginous yeasts and will be valuable for the development of superior lipid producers.
Collapse
|
126
|
Purification and characterization of organic solvent-tolerant lipase from Streptomyces sp. OC119-7 for biodiesel production. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2014.11.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
127
|
Shi Y, Ye X, Gu Q, Shi X, Song Z. Facile synthesis and stereo-resolution of chiral 1,2,3-triazoles. Org Biomol Chem 2015; 13:5407-11. [PMID: 25857342 DOI: 10.1039/c5ob00479a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe herein the first facile synthesis of chiral triazoles through side chain functionalization.
Collapse
Affiliation(s)
- Ye Shi
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
| | - Xiaohan Ye
- C. Eugene Bennett Department of Chemistry
- West Virginia University
- Morgantown
- USA
| | - Qiang Gu
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
| | - Xiaodong Shi
- C. Eugene Bennett Department of Chemistry
- West Virginia University
- Morgantown
- USA
| | - Zhiguang Song
- Department of Organic Chemistry
- College of Chemistry
- Jilin University
- Changchun 130021
- P. R. China
| |
Collapse
|
128
|
Mangas-Sánchez J, Adlercreutz P. Highly efficient enzymatic biodiesel production promoted by particle-induced emulsification. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:58. [PMID: 25873996 PMCID: PMC4396811 DOI: 10.1186/s13068-015-0247-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 03/26/2015] [Indexed: 05/06/2023]
Abstract
BACKGROUND At present, the conversion of oils to biodiesel is predominantly carried out using chemical catalysts. However, the corresponding lipase-catalysed process has important advantages, which include mild reaction conditions and the possibility of using cheap, low quality feedstocks with a high free fatty acid content. Further increases in the efficiency of the enzymatic process are desired to make it even more attractive and suitable for large-scale applications. RESULTS Herein, we present a simple and efficient two-phase lipase-catalysed system for the preparation of biodiesel in which different parameters (biocatalyst composition, ethanol concentration and the presence of additives) were optimised in order to obtain the maximum productivity starting from triolein with a high free oleic acid content. In the two-phase system, the enzyme tolerated high-ethanol concentrations, which made it possible to reach high conversions. The addition of silica particles increased the reaction rate substantially. It was suggested that such particles can catalyse acyl migration as a step to the full conversion to glycerol and biodiesel. However, in the system studied here, the effect of the particles was shown to be due to the formation of smaller and more uniform emulsion droplets leading to better mass transfer between the two phases. Particles of widely different size had positive effects, and the highest rate was obtained with silica particles derivatised with phenyl groups. The optimal conditions were applied to the solvent-free ethanolysis of rapeseed oil, and a yield of 96% was reached in 5 h. Under the mild conditions used, chemical catalysts were inefficient. CONCLUSIONS Triacylglycerol oils with a high free fatty acid content can be efficiently converted to ethyl esters using Thermomyces lanuginosus lipase as the catalyst in an aqueous/organic two-phase system. Fast mass transfer can be achieved using silica particles, which helped to decrease the size of the emulsion droplets and thus led to a more efficient process. The high-ethanol concentration tolerated by the lipase in this system made it possible to reach almost quantitative yields.
Collapse
Affiliation(s)
- Juan Mangas-Sánchez
- Department of Biotechnology, Lund University, P.O. Box 124, Lund, SE-221 00 Sweden
| | - Patrick Adlercreutz
- Department of Biotechnology, Lund University, P.O. Box 124, Lund, SE-221 00 Sweden
| |
Collapse
|
129
|
Singh J, Singh MK, Kumar M, Thakur IS. Immobilized lipase from Schizophyllum commune ISTL04 for the production of fatty acids methyl esters from cyanobacterial oil. BIORESOURCE TECHNOLOGY 2015; 188:214-8. [PMID: 25670399 DOI: 10.1016/j.biortech.2015.01.086] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 01/20/2015] [Accepted: 01/22/2015] [Indexed: 05/20/2023]
Abstract
Novel lipase from model mushroom Schizophyllum commune strain ISTL04 produced by solid state fermentation of Leucaena leucocephala seeds, was immobilized onto Celite for enzymatic FAMEs production from cyanobacterial endolith Leptolyngbya ISTCY101. The isolate showed vigorous growth and produced remarkable lipase activity of 146.5 U g(-1) dry solid substrate, without any external lipase inducer. Single-factor experiments were carried out to study the effects of various reaction parameters on the FAMEs yield. The best conditions for enzymatic transesterification as revealed by the results were: 1:3 oil to methanol molar ratio, added at 3h intervals, 12% water content, 1581.5 U g(-1) immobilized lipase, temperature 45 °C, and time 24h. Under these conditions, the maximum FAMEs yield reached 94%. The immobilized lipase was able to produce >90% of the relative FAMEs yield after four repeated transesterification cycles. This immobilized lipase exhibited potential for application in biodiesel industry.
Collapse
Affiliation(s)
- Jyoti Singh
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Manoj Kumar Singh
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Madan Kumar
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Indu Shekhar Thakur
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi 110067, India.
| |
Collapse
|
130
|
Cruz-Izquierdo Á, Picó EA, López C, Serra JL, Llama MJ. Magnetic Cross-Linked Enzyme Aggregates (mCLEAs) of Candida antarctica lipase: an efficient and stable biocatalyst for biodiesel synthesis. PLoS One 2014; 9:e115202. [PMID: 25551445 PMCID: PMC4281201 DOI: 10.1371/journal.pone.0115202] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 11/19/2014] [Indexed: 11/18/2022] Open
Abstract
Enzyme-catalyzed production of biodiesel is the object of extensive research due to the global shortage of fossil fuels and increased environmental concerns. Herein we report the preparation and main characteristics of a novel biocatalyst consisting of Cross-Linked Enzyme Aggregates (CLEAs) of Candida antarctica lipase B (CALB) which are covalently bound to magnetic nanoparticles, and tackle its use for the synthesis of biodiesel from non-edible vegetable and waste frying oils. For this purpose, insolubilized CALB was covalently cross-linked to magnetic nanoparticles of magnetite which the surface was functionalized with -NH2 groups. The resulting biocatalyst combines the relevant catalytic properties of CLEAs (as great stability and feasibility for their reutilization) and the magnetic character, and thus the final product (mCLEAs) are superparamagnetic particles of a robust catalyst which is more stable than the free enzyme, easily recoverable from the reaction medium and reusable for new catalytic cycles. We have studied the main properties of this biocatalyst and we have assessed its utility to catalyze transesterification reactions to obtain biodiesel from non-edible vegetable oils including unrefined soybean, jatropha and cameline, as well as waste frying oil. Using 1% mCLEAs (w/w of oil) conversions near 80% were routinely obtained at 30°C after 24 h of reaction, this value rising to 92% after 72 h. Moreover, the magnetic biocatalyst can be easily recovered from the reaction mixture and reused for at least ten consecutive cycles of 24 h without apparent loss of activity. The obtained results suggest that mCLEAs prepared from CALB can become a powerful biocatalyst for application at industrial scale with better performance than those currently available.
Collapse
Affiliation(s)
- Álvaro Cruz-Izquierdo
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Enrique A. Picó
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - Carmen López
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Bilbao, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
- * E-mail:
| | - Juan L. Serra
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| | - María J. Llama
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Bilbao, Spain
| |
Collapse
|
131
|
Kovalenko GA, Perminova LV, Beklemishev AB, Tkachenko VI. Study on physicochemical properties of biocatalysts with thermostable lipase activity and final products of triglycerides’ interesterification. APPL BIOCHEM MICRO+ 2014. [DOI: 10.1134/s0003683814070047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
132
|
Ferrarezi AL, Hideyuki Kobe Ohe T, Borges JP, Brito RR, Siqueira MR, Vendramini PH, Quilles JC, da Costa Carreira Nunes C, Bonilla-Rodriguez GO, Boscolo M, Da-Silva R, Gomes E. Production and characterization of lipases and immobilization of whole cell of the thermophilic Thermomucor indicae seudaticae N31 for transesterification reaction. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
133
|
Biocatalytic potential of lipase from Staphylococcus sp. MS1 for transesterification of jatropha oil into fatty acid methyl esters. World J Microbiol Biotechnol 2014; 30:2885-97. [DOI: 10.1007/s11274-014-1715-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 07/30/2014] [Indexed: 12/31/2022]
|
134
|
Escobar-Niño A, Luna C, Luna D, Marcos AT, Cánovas D, Mellado E. Selection and characterization of biofuel-producing environmental bacteria isolated from vegetable oil-rich wastes. PLoS One 2014; 9:e104063. [PMID: 25099150 PMCID: PMC4123985 DOI: 10.1371/journal.pone.0104063] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 07/06/2014] [Indexed: 11/30/2022] Open
Abstract
Fossil fuels are consumed so rapidly that it is expected that the planet resources will be soon exhausted. Therefore, it is imperative to develop alternative and inexpensive new technologies to produce sustainable fuels, for example biodiesel. In addition to hydrolytic and esterification reactions, lipases are capable of performing transesterification reactions useful for the production of biodiesel. However selection of the lipases capable of performing transesterification reactions is not easy and consequently very few biodiesel producing lipases are currently available. In this work we first isolated 1,016 lipolytic microorganisms by a qualitative plate assay. In a second step, lipolytic bacteria were analyzed using a colorimetric assay to detect the transesterification activity. Thirty of the initial lipolytic strains were selected for further characterization. Phylogenetic analysis revealed that 23 of the bacterial isolates were Gram negative and 7 were Gram positive, belonging to different clades. Biofuel production was analyzed and quantified by gas chromatography and revealed that 5 of the isolates produced biofuel with yields higher than 80% at benchtop scale. Chemical and viscosity analysis of the produced biofuel revealed that it differed from biodiesel. This bacterial-derived biofuel does not require any further downstream processing and it can be used directly in engines. The freeze-dried bacterial culture supernatants could be used at least five times for biofuel production without diminishing their activity. Therefore, these 5 isolates represent excellent candidates for testing biofuel production at industrial scale.
Collapse
Affiliation(s)
- Almudena Escobar-Niño
- Department of Genetics, Faculty of Biology, University of Seville, Seville, Spain
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
| | - Carlos Luna
- Department of Organic Chemistry, University of Córdoba, Córdoba, Spain
| | - Diego Luna
- Department of Organic Chemistry, University of Córdoba, Córdoba, Spain
| | - Ana T. Marcos
- Department of Genetics, Faculty of Biology, University of Seville, Seville, Spain
| | - David Cánovas
- Department of Genetics, Faculty of Biology, University of Seville, Seville, Spain
- * E-mail: (DC); (EM)
| | - Encarnación Mellado
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
- * E-mail: (DC); (EM)
| |
Collapse
|
135
|
Nordblad M, Silva VTL, Nielsen PM, Woodley JM. Identification of critical parameters in liquid enzyme-catalyzed biodiesel production. Biotechnol Bioeng 2014; 111:2446-53. [DOI: 10.1002/bit.25305] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 05/23/2014] [Accepted: 05/27/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Mathias Nordblad
- Department of Chemical and Biochemical Engineering; Technical University of Denmark; DK-2800 Kgs. Lyngby Denmark
| | - Vanessa T. L. Silva
- Department of Chemical and Biochemical Engineering; Technical University of Denmark; DK-2800 Kgs. Lyngby Denmark
| | | | - John M. Woodley
- Department of Chemical and Biochemical Engineering; Technical University of Denmark; DK-2800 Kgs. Lyngby Denmark
| |
Collapse
|
136
|
|
137
|
|
138
|
Kinetics of adsorption of lipase onto different mesoporous materials: Evaluation of Avrami model and leaching studies. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
139
|
Jadhav SH, Gogate PR. Ultrasound assisted enzymatic conversion of non edible oil to methyl esters. ULTRASONICS SONOCHEMISTRY 2014; 21:1374-1381. [PMID: 24491601 DOI: 10.1016/j.ultsonch.2013.12.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/03/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
Conventional and ultrasound-assisted hydrolysis and subsequent esterification of Nagchampa oil under mild operating conditions have been investigated with an objective of intensification of methyl esters production using a sustainable approach. The effect of ratio of reactants, temperature, enzyme loading, pretreatment of enzyme (using ultrasonic irradiations) on the hydrolysis and esterification reaction has been studied. Optimum conditions for hydrolysis were observed to be 1:1 weight ratio of oil: water for Lip Z and 1:3 for Lip 2 enzymes, enzyme loading of 400 units for Lip Z and 800 mg for Lip 2 enzymes and reaction time of 6h. In the case of esterification reaction, optimum conditions obtained were oil to methanol molar ratio of 1:2, enzyme loading of 1000 mg and reaction time of 20 h. Use of pretreated enzyme (using ultrasonic irradiations) was found to increase the extent of esterification reaction from 75% to 92.5%. It was observed that use of ultrasound in the reaction significantly intensified the esterification reaction with time requirement reducing from 20 h for conventional stirring based approach to only about 7.5 h in the presence of ultrasound. The extent of esterification obtained with sonicated enzyme also increased to 96% from 75% with unsonicated enzyme.
Collapse
Affiliation(s)
- Sanket H Jadhav
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India
| | - Parag R Gogate
- Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai 400 019, India.
| |
Collapse
|
140
|
Villo L, Metsala A, Tamp S, Parve J, Vallikivi I, Järving I, Samel N, Lille Ü, Pehk T, Parve O. Thermomyces lanuginosusLipase with Closed Lid Catalyzes Elimination of Acetic Acid from 11-Acetyl-Prostaglandin E2. ChemCatChem 2014. [DOI: 10.1002/cctc.201400019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
141
|
Evaluation of styrene-divinylbenzene beads as a support to immobilize lipases. Molecules 2014; 19:7629-45. [PMID: 24918537 PMCID: PMC6271320 DOI: 10.3390/molecules19067629] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 12/03/2022] Open
Abstract
A commercial and very hydrophobic styrene-divinylbenzene matrix, MCI GEL® CHP20P, has been compared to octyl-Sepharose® beads as support to immobilize three different enzymes: lipases from Thermomyces lanuginosus (TLL) and from Rhizomucor miehie (RML) and Lecitase® Ultra, a commercial artificial phospholipase. The immobilization mechanism on both supports was similar: interfacial activation of the enzymes versus the hydrophobic surface of the supports. Immobilization rate and loading capacity is much higher using MCI GEL® CHP20P compared to octyl-Sepharose® (87.2 mg protein/g of support using TLL, 310 mg/g using RML and 180 mg/g using Lecitase® Ultra). The thermal stability of all new preparations is much lower than that of the standard octyl-Sepharose® immobilized preparations, while the opposite occurs when the inactivations were performed in the presence of organic co-solvents. Regarding the hydrolytic activities, the results were strongly dependent on the substrate and pH of measurement. Octyl-Sepharose® immobilized enzymes were more active versus p-NPB than the enzymes immobilized on MCI GEL® CHP20P, while RML became 700-fold less active versus methyl phenylacetate. Thus, the immobilization of a lipase on this matrix needs to be empirically evaluated, since it may present very positive effects in some cases while in other cases it may have very negative ones.
Collapse
|
142
|
Piloto-Rodríguez R, Melo EA, Goyos-Pérez L, Verhelst S. Conversion of by-products from the vegetable oil industry into biodiesel and its use in internal combustion engines: a review. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2014. [DOI: 10.1590/0104-6632.20140312s00002763] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
143
|
Esteves AC, Saraiva M, Correia A, Alves A. Botryosphaeriales fungi produce extracellular enzymes with biotechnological potential. Can J Microbiol 2014; 60:332-42. [DOI: 10.1139/cjm-2014-0134] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phytopathogenic fungi are known for producing an arsenal of extracellular enzymes whose involvement in the infection mechanism has been suggested. However, these enzymes are largely unknown and their biotechnological potential also remains poorly understood. In this study, the production and thermostability of extracellular enzymes produced by phytopathogenic Botryosphaeriaceae was investigated. Hydrolytic and oxidative activities were detected and quantified at different temperatures. Most strains (70%; 37/53) were able to produce simultaneously cellulases, laccases, xylanases, pectinases, pectin lyases, amylases, lipases, and proteases. Surprisingly for mesophilic filamentous fungi, several enzymes proved to be thermostable: cellulases from Neofusicoccum mediterraneum CAA 001 and from Dothiorella prunicola CBS 124723, lipases from Diplodia pinea (CAA 015 and CBS 109726), and proteases from Melanops tulasnei CBS 116806 were more active at 70 °C than at any of the other temperatures tested. In addition, lipases produced by Diplodia pinea were found to be significantly more active than any other known lipase from Botryosphaeriales. The thermal activity profile and the wide array of activities secreted by these fungi make them optimal producers of biotechnologically relevant enzymes that may be applied in the food and the health industries (proteases), the pulp-and-paper and biofuel industries (cellulases), or even in the detergent industry (lipases, proteases, amylases, and cellulases).
Collapse
Affiliation(s)
- Ana Cristina Esteves
- Department of Biology and Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Márcia Saraiva
- Department of Biology and Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - António Correia
- Department of Biology and Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Artur Alves
- Department of Biology and Centre for Environmental and Marine Studies, University of Aveiro, 3810-193 Aveiro, Portugal
| |
Collapse
|
144
|
Karmakar A, Guedes da Silva MFC, Pombeiro AJL. Zinc metal-organic frameworks: efficient catalysts for the diastereoselective Henry reaction and transesterification. Dalton Trans 2014; 43:7795-810. [PMID: 24715037 DOI: 10.1039/c4dt00219a] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Three new compounds bearing different flexible side functional groups, viz. 2-acetamidoterephthalic acid (H2L1), 2-propionamidoterephthalic acid (H2L2) and 2-benzamidoterephthalic acid (H2L3), were synthesized and their coordination reactions with zinc(II) were studied. X-ray crystallography showed the formation of novel metal organic frameworks with different dimensionalities, where the side functional groups of amidoterephthalic acid and/or auxiliary ligands were found to play significant roles. These frameworks [Zn2(L1)2(4,4'-bipyridine)2(H2O)(DMF)]n (1), [Zn4(L2)3(OH)2(DMF)2(H2O)2]n (2) and [Zn(L3)(H2O)2]n·n/2(1,4-dioxane) (3) act as heterogeneous polymeric solid catalysts not only for the diastereoselective nitroaldol (Henry) reaction of different aldehydes with nitroalkanes but also for transesterification reactions. These MOF-based heterogeneous catalysts can be recycled without losing their activity.
Collapse
Affiliation(s)
- Anirban Karmakar
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.
| | | | | |
Collapse
|
145
|
|
146
|
New Lipase for Biodiesel Production: Partial Purification and Characterization of LipSB 25-4. ISRN BIOCHEMISTRY 2014; 2014:289749. [PMID: 25937966 PMCID: PMC4393003 DOI: 10.1155/2014/289749] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 01/28/2014] [Indexed: 11/18/2022]
Abstract
The lipolytic activities of 300 Streptomyces isolates were determined in Tributyrin and Rhodamine-B Agar. Lipase activities were also measured with p-nitrophenyl palmitate (p-NPP) as a substrate. The strain of Streptomyces bambergiensis OC 25-4 used in this study was selected among 300 strains of Streptomyces from MUCC as the best lipase producer. The incubation conditions were optimized and the inoculum amount, incubation period, effect of carbon and nitrogen sources, and rates of MgSO4 and CaCO3 were investigated. LipSB 25-4 (the lipase produced by S. bambergiensis OC 25-4 strain) was partially purified with ammonium sulphate precipitation, dialysis, and gel filtration chromatography 2.73-fold and with 92.12 U/mg specific activity. The optimal pH and temperature for LipSB 25-4 were determined as 8.0 and 50°C, respectively. The lipase has high stability in all pH and temperature values used in this study. While LipSB 25-4 was slightly activated in the presence of β-mercaptoethanol, it was slightly reduced by PMSF. The enzyme conserved approximately 75% of its activity at the end of 60 h, in the presence of methanol and ethanol. Since LipSB 25-4 displays high activity in the thermophilic conditions and stability in the presence of organic solvents, this lipase can catalyse the biodiesel production from olive oil by the transesterification reactions.
Collapse
|
147
|
Silk-Cocoon Matrix Immobilized Lipase Catalyzed Transesterification of Sunflower Oil for Production of Biodiesel. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/868535] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biodiesel from sunflower oil using lipase chemically immobilized on silk-cocoon matrix in a packed-bed bioreactor was investigated. The immobilization was demonstrated by field-emission scanning electron microscopy and activity study. The lipase loading was 738.74 U (~0.01 g lipase powder)/g-lipase-immobilized matrix. The Km (Michaelis-Menten constant) of the free and the immobilized lipase was 451.26 μM and 257.26 μM, respectively. Low Km value of the immobilized lipase is attributed to the hydrophobic nature of the matrix that facilitated the substrate diffusion to the enzyme surface. The biodiesel yield of 81.62% was obtained at 48 hours reaction time, 6 : 1 methanol : oil ratio (v/v), and 30°C. The immobilized lipase showed high operational stability at 30°C. The substrate conversion was only marginally decreased till third cycle (each of 48 hours duration) of the reaction since less than even 5% of the original activity was decreased in each of the second and third cycle. The findings demonstrated the potential of the silk-cocoon as lipase immobilization matrix for industrial production of biodiesel.
Collapse
|
148
|
Preparation of core–shell polymer supports to immobilize lipase B from Candida antarctica. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.11.020] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
149
|
Metabolic engineering of Escherichia coli for production of fatty acid short-chain esters through combination of the fatty acid and 2-keto acid pathways. Metab Eng 2014; 22:69-75. [PMID: 24440714 DOI: 10.1016/j.ymben.2014.01.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 12/30/2013] [Accepted: 01/08/2014] [Indexed: 01/22/2023]
Abstract
Fatty acid short-chain esters (FASEs) are biodiesels that are renewable, nontoxic, and biodegradable biofuels. A novel approach for the biosynthesis of FASEs has been developed using metabolically-engineered E. coli through combination of the fatty acid and 2-keto acid pathways. Several genetic engineering strategies were also developed to increase fatty acyl-CoA availability to improve FASEs production. Fed-batch cultivation of the engineered E. coli resulted in a titer of 1008 mg/L FASEs. Since the fatty acid and 2-keto acid pathways are native microbial synthesis pathways, this strategy can be implemented in a variety of microorganisms to produce various FASEs from cheap and readily-available, renewable, raw materials such as sugars and cellulose in the future.
Collapse
|
150
|
Lee AF, Bennett JA, Manayil JC, Wilson K. Heterogeneous catalysis for sustainable biodiesel productionviaesterification and transesterification. Chem Soc Rev 2014; 43:7887-916. [DOI: 10.1039/c4cs00189c] [Citation(s) in RCA: 516] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low temperature catalytic conversion of triglycerides and fatty acids sourced from renewable feedstocks represents a key enabling technology for the sustainable production of biodiesel through energy efficient, intensified processes.
Collapse
Affiliation(s)
- Adam F. Lee
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET, UK
| | - James A. Bennett
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET, UK
| | - Jinesh C. Manayil
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET, UK
| | - Karen Wilson
- European Bioenergy Research Institute
- Aston University
- Birmingham B4 7ET, UK
| |
Collapse
|