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Butiuk AP, Martos MA, Hours RA. Mycelium-bound chlorogenate hydrolase of Aspergillus niger AKU 3302 as a stable immobilized biocatalyst. J Biosci Bioeng 2023:S1389-1723(23)00140-8. [PMID: 37311683 DOI: 10.1016/j.jbiosc.2023.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/06/2023] [Accepted: 05/16/2023] [Indexed: 06/15/2023]
Abstract
CHase catalyzes chlorogenic acid (CGA) hydrolysis to yield equimolar quinic (QA) and caffeic (CA) acids, products of high value and keen industrial interest. We proposed the preparation and characterization of the nonviable mycelium of Aspergillus niger AKU 3302 containing a cell-associated CHase (CHase biocatalyst) for application in hydrolyzing the CGA from yerba mate residues to produce QA and CA. When the vegetative mycelium was heated at 55 °C for 30 min, no loss of CHase activity occurred, but vegetative mycelial growth and spore germination ended. The CHase biocatalyst did not limit mass transfer above 100 strokes min-1. The reaction rate increased with catalyst loading and was kinetically controlled. The CHase biocatalyst exhibited suitable biochemical properties (optimum pH 6.5 at 50 °C) and high thermal stability (remaining stable at up to 50 °C for 8 h). The cations in yerba mate extracts did not affect CHase activity. We observed no apparent loss in the activity of the CHase biocatalyst after even 11 batch cycles of continuous use. The biocatalyst retained 85% of its initial activity after 25 days of storage at pH 6.5 and 5 °C. When a yerba mate extract was passed through a glass column packed with the biocatalyst, an effective bioconversion of CGA into CA and QA occurred. CHase activity produced a natural biocatalysis with considerable operational and storage stability; which capability, being a novel biotechnological process, can be used in the bioconversion of CGA from yerba mate residues into CA and QA at a substantially reduced cost.
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Affiliation(s)
- Ana Paula Butiuk
- School of Exact, Chemical and Life Sciences, Misiones National University, Félix de Azara 1552, N3300LQH Posadas, Misiones, Argentina.
| | - María Alicia Martos
- School of Exact, Chemical and Life Sciences, Misiones National University, Félix de Azara 1552, N3300LQH Posadas, Misiones, Argentina
| | - Roque Alberto Hours
- Research and Development Center for Industrial Fermentation (CINDEFI; UNLP, CONICET La Plata), School of Science, La Plata National University, 47 y 115, B1900ASH La Plata, Argentina; Department of Chemical Engineering, National Technological University-La Plata Regional Faculty (UTN-FRLP), 60 y 124, La Plata, Argentina
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2
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The Change Mechanism of Structural Characterization and Thermodynamic Properties of Tannase from Aspergillus niger NL112 Under High Temperature. Appl Biochem Biotechnol 2021; 193:2225-2244. [PMID: 33686629 DOI: 10.1007/s12010-021-03488-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 01/07/2021] [Indexed: 10/22/2022]
Abstract
Tannase from Aspergillus niger NL112 was purified 5.1-fold with a yield of 50.44% via ultrafiltration, DEAE-Sepharose Fast Flow column chromatography, and Sephadex G-100 column chromatography. The molecular weight of the purified tannase was estimated as 45 kDa. The optimum temperature and pH for its activity were 45 °C and 5.0, respectively. The results of circular dichroism, FT-IR (Fourier transform infrared) spectroscopy, and fluorescence spectra indicated that high temperature could lead to the change of tannase secondary and tertiary structures. Tannase had a greater affinity for tannic acid at 40 °C with a Km value of 2.12 mM and the greatest efficiency hydrolysis (Kcat/Km) at 45 °C. The rate of inactivation (k) increased with the increase of temperature and the half-life (t1/2) gradually decreased. It was found to be 1.0 of the temperature quotient (Q10) value for tannic acid hydrolysis by tannase. The thermodynamic parameters of the interaction system were calculated at various temperatures. The positive enthalpy (ΔH) values and decreasing ΔH values with the increase of temperature indicated that the hydrolysis of tannase was an endothermic process. Our results indicated that elevated temperature could change the tertiary structure of tannase and reduce its thermostability, which caused a gradual decrease of tannase activity with an increase in temperature.
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Alvarez G, Shahzad T, Andanson L, Bahn M, Wallenstein MD, Fontaine S. Catalytic power of enzymes decreases with temperature: New insights for understanding soil C cycling and microbial ecology under warming. GLOBAL CHANGE BIOLOGY 2018; 24:4238-4250. [PMID: 29682861 DOI: 10.1111/gcb.14281] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 02/06/2018] [Accepted: 03/14/2018] [Indexed: 06/08/2023]
Abstract
Most current models of soil C dynamics predict that climate warming will accelerate soil C mineralization, resulting in a long-term CO2 release and positive feedback to global warming. However, ecosystem warming experiments show that CO2 loss from warmed soils declines to control levels within a few years. Here, we explore the temperature dependence of enzymatic conversion of polymerized soil organic C (SOC) into assimilable compounds, which is presumed the rate-limiting step of SOC mineralization. Combining literature review, modelling and enzyme assays, we studied the effect of temperature on activity of enzymes considering their thermal inactivation and catalytic activity. We defined the catalytic power of enzymes (Epower ) as the cumulative amount of degraded substrate by one unit of enzyme until its complete inactivation. We show a universal pattern of enzyme's thermodynamic properties: activation energy of catalytic activity (EAcat ) < activation energy of thermal inactivation (EAinact ). By investing in stable enzymes (high EAinact ) having high catalytic activity (low EAcat ), microorganisms may maximize the Epower of their enzymes. The counterpart of such EAs' hierarchical pattern is the higher relative temperature sensitivity of enzyme inactivation than catalysis, resulting in a reduction in Epower under warming. Our findings could explain the decrease with temperature in soil enzyme pools, microbial biomass (MB) and carbon use efficiency (CUE) reported in some warming experiments and studies monitoring the seasonal variation in soil enzymes. They also suggest that a decrease in soil enzyme pools due to their faster inactivation under warming contributes to the observed attenuation of warming effect on soil C mineralization. This testable theory predicts that the ultimate response of SOC degradation to warming can be positive or negative depending on the relative temperature response of Epower and microbial production of enzymes.
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Affiliation(s)
- Gaël Alvarez
- INRA, VetAgro Sup, UMR Ecosystème Prairial, Clermont-Ferrand, France
| | - Tanvir Shahzad
- Department of Environmental Sciences & Engineering, Government College University-Faisalabad, Faisalabad, Pakistan
| | - Laurence Andanson
- INRA, VetAgro Sup, UMR Ecosystème Prairial, Clermont-Ferrand, France
| | - Michael Bahn
- Institute of Ecology, University of Innsbruck, Innsbruck, Austria
| | - Matthew D Wallenstein
- Natural Resource Ecology Laboratory and Graduate Degree Program in Ecology, Colorado State University, Fort Collins, Colorado
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de Sena AR, Campos Leite TC, Evaristo da Silva Nascimento TC, Silva ACD, Souza CS, Vaz AFDM, Moreira KA, de Assis SA. Kinetic, thermodynamic parameters and in vitro digestion of tannase from Aspergillus tamarii URM 7115. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2018.1452201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Amanda Reges de Sena
- Microbiology Laboratory, Federal Institute of Education, Science and Technology of Pernambuco, Barreiros, Pernambuco, Brazil
| | - Tonny Cley Campos Leite
- Microbiology Laboratory, Federal Institute of Education, Science and Technology of Pernambuco, Barreiros, Pernambuco, Brazil
| | | | - Anna Carolina da Silva
- Central Laboratory of Garanhuns, Laboratory of Biotechnology, Academic Unit of Garanhuns, Federal Rural University of Pernambuco, Garanhuns, Pernambuco, Brazil
| | - Catiane S. Souza
- Laboratory of Enzymology, Department of Health, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
| | | | - Keila Aparecida Moreira
- Central Laboratory of Garanhuns, Laboratory of Biotechnology, Academic Unit of Garanhuns, Federal Rural University of Pernambuco, Garanhuns, Pernambuco, Brazil
| | - Sandra Aparecida de Assis
- Laboratory of Enzymology, Department of Health, State University of Feira de Santana, Feira de Santana, Bahia, Brazil
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Abdel-Naby MA, El-Tanash AB, Sherief ADA. Structural characterization, catalytic, kinetic and thermodynamic properties of Aspergillus oryzae tannase. Int J Biol Macromol 2016; 92:803-811. [PMID: 27373426 DOI: 10.1016/j.ijbiomac.2016.06.098] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 06/23/2016] [Accepted: 06/30/2016] [Indexed: 11/19/2022]
Abstract
Tannase (EC.3.1.1.20) from Aspergillus oryzae was purified using ammonium sulphate precipitation (75%), gel filtration chromatography through Sephadex G-100, and G-200. The purified enzyme was monomeric protein with a molecular mass of 106kDa. The activation energy for tannic acid hydrolysis was 32.6kJmol-1 and its temperature quotient (Q10) was 1.0. The pKa1 and pKa2 values of acidic and basic limbs of the active site residues were 4.6 and 6.4. The calculated values of thermodynamic parameters for tannic acid hydrolysis, were as follows: ΔH*=30.02kJmol-1, ΔG*=59.75kJmol-1 ΔS*=-95.90Jmol-1K-1, (ΔG*E-S)=3.66kJmol-1 and ΔG*E-T -12.61kJmol-1. The pure enzyme exhibited Km, Vmax and kcat of 4.13mM, 3507Umgprotein-1 and 551.4s-1. The calculated half-life time at 40, 45, 50, 55, 60, and 70°C was 955.15, 142.0, 30.28, 17.88, 8.23 and 2.95min, respectively. The thermodynamic parameters for irreversible thermal inactivation at different temperatures (40-70°C) were determined. The enzyme was activated by Ca2+, and Mg2+ while Hg2+, Fe2+, and Cu2+ strongly inhibited it. Hydrolysis of tannic acid by the pure enzyme indicated that gallic acid was the end-product.
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Affiliation(s)
- Mohamed A Abdel-Naby
- Department of chemistry of natural and microbial products, National Research Center, Cairo, Egypt.
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Ni H, Chen F, Jiang ZD, Cai MY, Yang YF, Xiao AF, Cai HN. Biotransformation of tea catechins using Aspergillus niger tannase prepared by solid state fermentation on tea byproduct. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2014.09.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Beniwal V, Sharma A, Marwah S, Goel G. Use of chickpea (Cicer arietinum L.) milling agrowaste for the production of tannase using co-cultures of Aspergillus awamori MTCC 9299 and Aspergillus heteromorphus MTCC 8818. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0965-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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Aithal M, Belur PD. Production of propyl gallate in nonaqueous medium using cell-associated tannase of Bacillus massiliensis: effect of various parameters and statistical optimization. Biotechnol Appl Biochem 2013; 60:210-8. [PMID: 23600575 DOI: 10.1002/bab.1068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 11/20/2012] [Indexed: 11/12/2022]
Abstract
Enzymatic synthesis of propyl gallate in an organic solvent was studied using cell-associated tannase (E.C. 3.1.1.20) of Bacillus massiliensis. Lyophilized biomass showing tannase activity was used as a biocatalyst. The influence of buffer pH and strength, water activity, temperature, biocatalyst loading, gallic acid concentration, and 1-propanol concentration was studied by the one-factor-at-a-time method. Subsequently, response surface methodology was applied based on a central composite design to determine the effects of three independent variables (biocatalyst loading, gallic acid concentration, and 1-propanol concentration) and their mutual interactions. A total of 20 experiments were conducted, and a statistical model was developed, which predicted the maximum propyl gallate yield of 20.28 μg/mL in the reaction mixture comprising 40.4 mg biocatalyst, 0.4 mM gallic acid, and 6.52 % (v/v) 1-propanol in 9.5 mL benzene at 30°C. The subsequent verification experiments established the validity of the model. Under optimal conditions, 25% conversion of gallic acid to propyl gallate was achieved on a molar basis. The absence of the need for enzyme purification and subsequent immobilization steps and good conversion efficiency makes this enzyme system an interesting one. Reports on the applications of bacterial whole cell systems for synthetic reactions in organic solvents are scarce, and perhaps this is the first report on bacterial cell-associated tannase-mediated esterification in a nonaqueous medium.
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Affiliation(s)
- Mahesh Aithal
- Department of Chemical Engineering, National Institute of Technology Karnataka, Surathkal, Srinivasnagar, India
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A novel low molecular weight acido-thermophilic tannase from Enterobacter cloacae MTCC 9125. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2013. [DOI: 10.1016/j.bcab.2013.03.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nie G, Liu H, Chen Z, Wang P, Zhao G, Zheng Z. Synthesis of propyl gallate from tannic acid catalyzed by tannase from Aspergillus oryzae: Process optimization of transesterification in anhydrous media. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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11
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Beniwal V, Rajesh, Goel G, Kumar A, Chhokar V. Production of tannase through solid state fermentation using Indian Rosewood (Dalbergia Sissoo)sawdust—a timber industry waste. ANN MICROBIOL 2012. [DOI: 10.1007/s13213-012-0508-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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12
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Nie G, Zheng Z, Gong G, Zhao G, Liu Y, Song J, Dai J. Characterization of bioimprinted tannase and its kinetic and thermodynamics properties in synthesis of propyl gallate by transesterification in anhydrous medium. Appl Biochem Biotechnol 2012; 167:2305-17. [PMID: 22711493 DOI: 10.1007/s12010-012-9775-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 06/10/2012] [Indexed: 10/28/2022]
Abstract
Tannase has been extensively applied to synthesize gallic acid esters. Bioimprinting technique can evidently enhance transesterification-catalyzing performance of tannase. In order to promote the practical utilization of the modified tannase, a few enzymatic characteristics of the enzyme and its kinetic and thermodynamics properties in synthesis of propyl gallate by transesterification in anhydrous medium have been studied. The investigations of pH and temperature found that the imprinted tannase holds an optimum activity at pH 5.0 and 40 °C. On the other hand, the bioimprinting technique has a profound enhancing effect on the adapted tannase in substrate affinity and thermostability. The kinetic and thermodynamic analyses showed that the modified tannase has a longer half-time of 1,710 h at 40 °C; the kinetic constants, the activation energy of reversible thermal inactivation, and the activation energy of irreversible thermal inactivation, respectively, are 0.054 mM, 17.35 kJ mol(-1), and 85.54 kJ mol(-1) with tannic acid as a substrate at 40 °C; the free energy of Gibbs (ΔG) and enthalpy (ΔH) were found to be 97.1 and 82.9 kJ mol(-1) separately under the same conditions.
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Affiliation(s)
- Guangjun Nie
- Key Lab of Ion Beam Bioengineering, Chinese Academy of Science, 230031 Hefei, China.
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13
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N+ ion beam implantation of tannase-producing Aspergillus niger and optimization of its process parameters under submerged fermentation. ANN MICROBIOL 2012. [DOI: 10.1007/s13213-012-0471-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
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14
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Horchani H, Aissa I, Ouertani S, Zarai Z, Gargouri Y, Sayari A. Staphylococcal lipases: Biotechnological applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2011.11.018] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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15
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Qiu Y, Niu H, Huang W, He Y, Wu XH. Properties and secondary structure of tannase from Penicillium herquei. BIOTECHNOL BIOPROC E 2011. [DOI: 10.1007/s12257-011-0123-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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El-Tanash AB, Sherief AA, Nour A. Catalytic properties of immobilized tannase produced from Aspergillus aculeatus compared with the free enzyme. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2011. [DOI: 10.1590/s0104-66322011000300004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
| | | | - A Nour
- Mansoura University, Egypt
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17
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Catalytic and thermodynamic properties of a tannase produced by Aspergillus niger GH1 grown on polyurethane foam. Appl Biochem Biotechnol 2011; 165:1141-51. [PMID: 21837378 DOI: 10.1007/s12010-011-9331-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2011] [Accepted: 07/27/2011] [Indexed: 10/17/2022]
Abstract
Tannase is an inducible enzyme with important applications in the food and pharmaceutical industries. This enzyme was produced by the fungus Aspergillus niger GH1 under solid-state fermentation using polyurethane foam as solid support and tannic acid as sole carbon source and tannase inducer. Physicochemical properties of A. niger tannase were characterized, and the kinetic and thermodynamics parameters on methyl gallate hydrolysis were evaluated. The enzyme was stable in a pH range of 2-8 and a functional temperature range of 25-65 °C. The highest k(cat) value was 2,611.10 s(-1) at 65 °C. Tannase had more affinity for methyl gallate at 45 °C with a K(M) value of 1.82 mM and an efficiency of hydrolysis (k(cat)/K(M)) of 330.01 s(-1) mM(-1). The lowest E(a) value was found to be 21.38 kJ/mol at 4.4 mM of methyl gallate. The lowest free energy of Gibbs (ΔG) and enthalpy (ΔH) were found to be 64.86 and 18.56 kJ/mol, respectively. Entropy (ΔS) was -0.22 kJ/mol K. Results suggest that the A. niger GH1 tannase is an attractive enzyme for industrial applications due its catalytic and thermodynamical properties.
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Renovato J, Gutiérrez-Sánchez G, Rodríguez-Durán LV, Bergman C, Rodríguez R, Aguilar CN. Differential Properties of Aspergillus niger Tannase Produced Under Solid-State and Submerged Fermentations. Appl Biochem Biotechnol 2011; 165:382-95. [DOI: 10.1007/s12010-011-9258-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Accepted: 04/04/2011] [Indexed: 10/18/2022]
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Fernandez-Lorente G, Bolivar JM, Rocha-Martin J, Curiel JA, Muñoz R, de Las Rivas B, Carrascosa AV, Guisan JM. Synthesis of propyl gallate by transesterification of tannic acid in aqueous media catalysed by immobilised derivatives of tannase from Lactobacillus plantarum. Food Chem 2011; 128:214-7. [PMID: 25214351 DOI: 10.1016/j.foodchem.2011.02.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2010] [Revised: 01/16/2011] [Accepted: 02/14/2011] [Indexed: 10/18/2022]
Abstract
Immobilised derivatives of tannase from Lactobacillus plantarum were able to catalyse the transesterification of tannic acid by using moderate concentrations of 1-propanol in aqueous media. Transesterification of tannic acid was very similar to transesterification of methyl gallate. The synthetic yield depended on the pH and concentration of 1-propanol, although it did not vary much when using 30% or 50% 1-propanol. Synthetic yields of 45% were obtained with 30% of 1-propanol at pH 5.0. The product was chromatographically pure, and the reaction by-product was 55% pure gallic acid. On the other hand, immobilised tannase was fairly stable under optimal reaction conditions.
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Affiliation(s)
| | | | | | - Jose A Curiel
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Rosario Muñoz
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Blanca de Las Rivas
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Alfonso V Carrascosa
- Instituto de Fermentaciones Industriales, CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Jose M Guisan
- Instituto de Catalisis, CSIC, Campus UAM-Cantoblanco, 28049 Madrid, Spain.
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Enzymatic propyl gallate synthesis in solvent-free system: Optimization by response surface methodology. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.molcatb.2010.08.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Aguilar CN, Rodríguez R, Gutiérrez-Sánchez G, Augur C, Favela-Torres E, Prado-Barragan LA, Ramírez-Coronel A, Contreras-Esquivel JC. Microbial tannases: advances and perspectives. Appl Microbiol Biotechnol 2007; 76:47-59. [PMID: 17530245 DOI: 10.1007/s00253-007-1000-2] [Citation(s) in RCA: 153] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Revised: 04/14/2007] [Accepted: 04/15/2007] [Indexed: 10/23/2022]
Abstract
In the last years, tannase has been the subject of a lot of studies due to its commercial importance and complexity as catalytic molecule. Tannases are capable of hydrolyzing complex tannins, which represent the main chemical group of natural anti-microbials occurring in the plants. The general outline of this work includes information of the substrates, the enzyme, and the applications. This review considers in its introduction the concepts and history of tannase and explores scientific and technological aspects. The "advances" trace the route from the general, molecular, catalytic, and functional information obtained under close to optimal conditions for microbial production through purification, description of the enzyme properties, and the commercial applications to the "perspectives" including expression studies, regulation, and potential uses; aspects related to the progress in our understanding of tannin biodegradation are also included.
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Affiliation(s)
- Cristóbal N Aguilar
- Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Blvd. Venustiano Carranza and J. Cardenas s/n, Col. Republica Oriente, 25280, Saltillo, Mexico.
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22
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Loo JL, Lai OM, Long K, Ghazali HM. Fatty acid preference of mycelium-bound lipase from a locally isolated strain of Geotrichum candidum. World J Microbiol Biotechnol 2007; 23:1771-8. [DOI: 10.1007/s11274-007-9427-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Accepted: 04/25/2007] [Indexed: 11/27/2022]
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