1
|
Porfiri MC, Melnichuk N, Braia MJ, Brinatti C, Loh W, Romanini D. Analysis of the structure-function relationship of alpha amylase complexed with polyacrylic acid. Colloids Surf B Biointerfaces 2020; 188:110787. [PMID: 31954269 DOI: 10.1016/j.colsurfb.2020.110787] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/30/2019] [Accepted: 01/08/2020] [Indexed: 11/16/2022]
Abstract
Alpha-amylase is frequently used in technologies that require its immobilization, stabilization or encapsulation. Polyacrylic acid is a very suitable polymer for these purposes because it can bind to enzymes and then be released under certain conditions without altering the functional capacity of enzymes. The consequences produced by polyacrylic acid on alpha-amylase structure and function have been investigated through various techniques. Calorimetric measurements allowed examining the nature of the binding reaction, stoichiometry and affinity, while spectroscopic techniques provided additional information about functional and structural perturbations of the enzyme. Isothermal titration calorimetry (ITC) revealed a mixed interaction and a binding model with a large number of molecules of protein per molecule of polyacrylic acid. One the one hand circular dichroism (CD) spectroscopy showed that alpha-amylase loses its secondary structure in the presence of increasing concentrations of polyacrylic acid, while it is stabilized by the polyelectrolyte at low pH. On the other hand, fluorescence spectra revealed that the three-dimensional enzyme structure was not affected in the microenvironment of tryptophan residues. Differential scanning calorimetry (DSC) thermograms showed that only one domain of alpha-amylase is affected in its conformational stability by the polymer. The unfolding process proved to be partially reversible. Finally, the enzyme retained more than 90 % of its catalytic activity even in excess of the polymer.
Collapse
Affiliation(s)
- María C Porfiri
- Laboratorio de Investigación en Funcionalidad y Tecnología de Alimentos (LIFTA), Departamento de Ciencia y Tecnología, Universidad Nacional de Quilmes (UNQ), Roque Sáenz Peña 352, Bernal, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina
| | - Natasha Melnichuk
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ- CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, Rosario, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina
| | - Mauricio J Braia
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ- CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, Rosario, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina
| | - César Brinatti
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP) Cidade Universitária Zeferino Vaz, Barão Geraldo, Campinas, SP, Brazil
| | - Watson Loh
- Instituto de Química, Universidade Estadual de Campinas (UNICAMP) Cidade Universitária Zeferino Vaz, Barão Geraldo, Campinas, SP, Brazil
| | - Diana Romanini
- Instituto de Procesos Biotecnológicos y Químicos (IPROBYQ- CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Suipacha 531, Rosario, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Rivadavia 1917 (C1033AAJ), Buenos Aires, Argentina.
| |
Collapse
|
2
|
Wu WC, Hsiao PY, Huang YC. Effects of amylose content on starch-chitosan composite film and its application as a wound dressing. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1770-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
3
|
Cruz G, Ribotta P, Ferrero C, Iturriaga L. Physicochemical and rheological characterization of Andean tuber starches: Potato (Solanum tuberosumssp. Andigenum), Oca (Oxalis tuberosaMolina) and Papalisa (Ullucus tuberosusCaldas). STARCH-STARKE 2016. [DOI: 10.1002/star.201600103] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gonzalo Cruz
- Centro de Investigación y Transferencia Santiago del Estero (CITSE), CONICET-UNSE; Santiago del Estero Argentina
| | - Pablo Ribotta
- Instituto de Ciencia y Tecnología de Alimentos Córdoba (ICYTAC) (CONICET-UNC); Córdoba Argentina
| | - Cristina Ferrero
- Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA); CCT-CONICET-LA PLATA; Buenos Aires Argentina
| | - Laura Iturriaga
- Centro de Investigación y Transferencia Santiago del Estero (CITSE), CONICET-UNSE; Santiago del Estero Argentina
| |
Collapse
|
4
|
Porfirif MC, Milatich EJ, Farruggia BM, Romanini D. Production of alpha-amylase from Aspergillus oryzae for several industrial applications in a single step. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1022:87-92. [PMID: 27085017 DOI: 10.1016/j.jchromb.2016.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/05/2016] [Accepted: 04/08/2016] [Indexed: 10/22/2022]
Abstract
A one-step method as a strategy of alpha-amylase concentration and purification was developed in this work. This methodology requires the use of a very low concentration of biodegradable polyelectrolyte (Eudragit(®) E-PO) and represents a low cost, fast, easy to scale up and non-polluting technology. Besides, this methodology allows recycling the polymer after precipitation. The formation of reversible soluble/insoluble complexes between alpha-amylase and the polymer Eudragit(®) E-PO was studied, and their precipitation in selected conditions was applied with bioseparation purposes. Turbidimetric assays allowed to determine the pH range where the complexes are insoluble (4.50-7.00); pH 5.50 yielded the highest turbidity of the system. The presence of NaCl (0.05M) in the medium totally dissociates the protein-polymer complexes. When the adequate concentration of polymer was added under these conditions to a liquid culture of Aspergillus oryzae, purification factors of alpha-amylase up to 7.43 and recoveries of 88% were obtained in a simple step without previous clarification. These results demonstrate that this methodology is suitable for the concentration and production of alpha-amylase from this source and could be applied at the beginning of downstream processing.
Collapse
Affiliation(s)
- María C Porfirif
- Departamento de Tecnología, Facultad de Ciencias Bioquímicas y Farmacéuticas. Universidad Nacional de Rosario, IPROBYQ-CONICET, Suipacha 531 (S2002RLK), Rosario, Argentina
| | - Esteban J Milatich
- Departamento de Tecnología, Facultad de Ciencias Bioquímicas y Farmacéuticas. Universidad Nacional de Rosario, IPROBYQ-CONICET, Suipacha 531 (S2002RLK), Rosario, Argentina
| | - Beatriz M Farruggia
- Departamento de Tecnología, Facultad de Ciencias Bioquímicas y Farmacéuticas. Universidad Nacional de Rosario, IPROBYQ-CONICET, Suipacha 531 (S2002RLK), Rosario, Argentina
| | - Diana Romanini
- Departamento de Tecnología, Facultad de Ciencias Bioquímicas y Farmacéuticas. Universidad Nacional de Rosario, IPROBYQ-CONICET, Suipacha 531 (S2002RLK), Rosario, Argentina.
| |
Collapse
|
5
|
Ali G, Dulong V, Gasmi SN, Rihouey C, Picton L, Le Cerf D. Covalent immobilization of pullulanase on alginate and study of its hydrolysis of pullulan. Biotechnol Prog 2015; 31:883-9. [DOI: 10.1002/btpr.2093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 04/21/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Ghina Ali
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| | - Virginie Dulong
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| | - Sarah N. Gasmi
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| | - Christophe Rihouey
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| | - Luc Picton
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| | - Didier Le Cerf
- Normandie Université; France
- Laboratoire Polymères Biopolymères Surfaces; Université De Rouen; Mont Saint Aignan F 76821 France
- CNRS UMR 6270 & Fr3038; Mont Saint Aignan F 76821 France
| |
Collapse
|
6
|
Kurzawska A, Górecka D, Błaszczak W, Szwengiel A, Paukszta D, Lewandowicz G. The molecular and supermolecular structure of common cattail (Typha latifolia) starch. STARCH-STARKE 2014. [DOI: 10.1002/star.201300283] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Agata Kurzawska
- Department of Food Service and Catering; Poznań University of Life Sciences; Poznań Poland
| | - Danuta Górecka
- Department of Food Service and Catering; Poznań University of Life Sciences; Poznań Poland
| | - Wioletta Błaszczak
- Institute of Animal Reproduction and Food Research; Polish Academy of Sciences; Olsztyn Poland
| | - Artur Szwengiel
- Institute of Food Technology of Plant Origin; Poznań University of Life Sciences; Poznań Poland
| | - Dominik Paukszta
- Institute of Chemical Technology and Engineering; Poznań University of Technology; Poznań Poland
| | - Grażyna Lewandowicz
- Department of Biotechnology and Food Microbiology; Poznań University of Life Sciences; Poznań Poland
| |
Collapse
|
7
|
Singh V, Ahmad S. Carboxymethyl cellulose-gelatin-silica nanohybrid: an efficient carrier matrix for alpha amylase. Int J Biol Macromol 2014; 67:439-45. [PMID: 24709014 DOI: 10.1016/j.ijbiomac.2014.03.051] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2014] [Revised: 03/19/2014] [Accepted: 03/26/2014] [Indexed: 11/18/2022]
Abstract
Carboxymethyl cellulose (CMC)-gelatin (G) dual templated polymerization of tetramethoxysilane (TMOS) furnished an efficient hybrid carrier support for alpha amylase. The material has been characterized using FTIR, XRD SEM, TGA and BET studies. The amylase was immobilized at the presynthesized hybrid support by adsorption and the immobilized enzyme was used to optimize the conditions for soluble starch hydrolysis. The immobilization did not change the optimum working pH (pH 5) and temperature (40°C) of the enzymatic reaction. The kinetic parameters of the immobilized (Km=9.970mgmL(-1); Vmax=66.23mgmL(-1)min(-1)) and free amylase (KM=4.0509mgmL(-1), Vmax=4.2909mgmL(-1)min(-1)) indicated that the immobilization has enhanced the catalytic function of diastase alpha amylase. The immobilized enzyme showed higher shelf life as compared to the free enzyme in solution and it could be reused for seven consecutive cycles where 85% of the initial activity was exhibited even in the last cycle. The present material is as efficient as our previously reported material CMC-AgNps-Si.
Collapse
Affiliation(s)
- Vandana Singh
- Department of Chemistry, University of Allahabad, Allahabad 211002, India.
| | - Shakeel Ahmad
- Department of Chemistry, University of Allahabad, Allahabad 211002, India
| |
Collapse
|
8
|
|
9
|
Abstract
A general mathematical model for a fixed bed immobilized enzyme reactor was developed to simulate the process of diffusion and reaction inside the biocatalyst particle. The modeling and simulation of starch hydrolysis using immobilized α-amylase were used as a model for this study. Corn starch hydrolysis was carried out at a constant pH of 5.5 and temperature of 50°C. The substrate flow rate was ranging from 0.2 to 5.0 mL/min, substrate initial concentrations 1 to 100 g/L. α-amylase was immobilized on to calcium alginate hydrogel beads of 2 mm average diameter. In this work Michaelis-Menten kinetics have been considered. The effect of substrate flow rate (i.e., residence time) and initial concentration on intraparticle diffusion have been taken into consideration. The performance of the system is found to be affected by the substrate flow rate and initial concentrations. The reaction is controlled by the reaction rate. The model equation was a nonlinear second order differential equation simulated based on the experimental data for steady state condition. The simulation was achieved numerically using FINITE ELEMENTS in MATLAB software package. The simulated results give satisfactory results for substrate and product concentration profiles within the biocatalyst bead.
Collapse
|
10
|
Tüzmen N, Kalburcu T, Denizli A. α-Amylase immobilization onto dye attached magnetic beads: Optimization and characterization. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcatb.2012.01.017] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
11
|
He Y, Kong W, Wang W, Liu T, Liu Y, Gong Q, Gao J. Modified natural halloysite/potato starch composite films. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.11.057] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Silver nanoparticle (AgNPs) doped gum acacia-gelatin-silica nanohybrid: an effective support for diastase immobilization. Int J Biol Macromol 2011; 50:353-61. [PMID: 22210525 DOI: 10.1016/j.ijbiomac.2011.12.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Revised: 12/03/2011] [Accepted: 12/15/2011] [Indexed: 11/24/2022]
Abstract
An effective carrier matrix for diastase alpha amylase immobilization has been fabricated by gum acacia-gelatin dual templated polymerization of tetramethoxysilane. Silver nanoparticle (AgNp) doping to this hybrid could significantly enhance the shelf life of the impregnated enzyme while retaining its full bio-catalytic activity. The doped nanohybrid has been characterized as a thermally stable porous material which also showed multipeak photoluminescence under UV excitation. The immobilized diastase alpha amylase has been used to optimize the conditions for soluble starch hydrolysis in comparison to the free enzyme. The optimum pH for both immobilized and free enzyme hydrolysis was found to be same (pH=5), indicating that the immobilization made no major change in enzyme conformation. The immobilized enzyme showed good performance in wide temperature range (from 303 to 323 K), 323 K being the optimum value. The kinetic parameters for the immobilized, (K(m)=10.30 mg/mL, V(max)=4.36 μmol mL(-1)min(-1)) and free enzyme (K(m)=8.85 mg/mL, V(max)=2.81 μmol mL(-1)min(-1)) indicated that the immobilization improved the overall stability and catalytic property of the enzyme. The immobilized enzyme remained usable for repeated cycles and did not lose its activity even after 30 days storage at 40°C, while identically synthesized and stored silver undoped hybrid lost its ~31% activity in 48 h. Present study revealed the hybrids to be potentially useful for biomedical and optical applications.
Collapse
|
13
|
Borgio JF. Immobilization of Microbial (Wild and Mutant Strains) Amylase on Coconut Fiber and Alginate Matrix for Enhanced Activity. ACTA ACUST UNITED AC 2011. [DOI: 10.3923/ajbmb.2011.255.264] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
14
|
Burlingame B, Mouillé B, Charrondière R. Nutrients, bioactive non-nutrients and anti-nutrients in potatoes. J Food Compost Anal 2009. [DOI: 10.1016/j.jfca.2009.09.001] [Citation(s) in RCA: 186] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|