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de Souza RC, da Silva LM, Carra S, Flores M, Puton BM, Malvessi E, Valduga E, Zeni J. High-sodium maltobionate production by immobilized Zymomonas mobilis cells in polyurethane. Bioprocess Biosyst Eng 2022; 45:1465-1476. [PMID: 35876965 DOI: 10.1007/s00449-022-02756-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 07/07/2022] [Indexed: 11/30/2022]
Abstract
The purpose of this study was the production of maltobionic acid, in the form of sodium maltobionate, by Z. mobilis cells immobilized in polyurethane. The in situ immobilized system (0.125-0.35 mm) was composed of 7 g polyol, 3.5 g isocyanate, 0.02 g silicone, and 7 g Z. mobilis cell, at the concentration of 210 g/L. The bioconversion of maltose to sodium maltobionate was performed with different cell concentrations (7.0-9.0 gimobilized/Lreaction_medium), temperature (30.54-47.46 °C), pH (5.55-7.25), and substrate concentration (0.7-1.3 mol/L). The stability of the immobilized system was evaluated for 24 h bioconversion cycles and storage of 6 months. The maximum concentration of sodium maltobionate was 648.61 mmol/L in 34.34 h process (8.5 gdry_cell/Lreaction_medium) at 39 °C and pH 6.30. The immobilized system showed stability for 19 successive operational cycles of 24 h bioconversion and 6 months of storage, at 4 °C or 22 °C.
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Affiliation(s)
- Roberta Cristina de Souza
- Department of Food Engineering, Universidade Regional Integrada Do Alto Uruguai E das Missões, CEP: 99709-910, Erechim, RS, Brasil
| | - Leonardo Meirelles da Silva
- Department of Food Engineering, Universidade Regional Integrada Do Alto Uruguai E das Missões, CEP: 99709-910, Erechim, RS, Brasil
| | - Sabrina Carra
- Biotechnology Institute, Universidade de Caxias Do Sul, CEP: 95070-560, Caxias Do Sul, RS, Brasil
| | - Maicon Flores
- Biotechnology Institute, Universidade de Caxias Do Sul, CEP: 95070-560, Caxias Do Sul, RS, Brasil
| | - Bruna Maria Puton
- Department of Food Engineering, Universidade Regional Integrada Do Alto Uruguai E das Missões, CEP: 99709-910, Erechim, RS, Brasil
| | - Eloane Malvessi
- Biotechnology Institute, Universidade de Caxias Do Sul, CEP: 95070-560, Caxias Do Sul, RS, Brasil
| | - Eunice Valduga
- Department of Food Engineering, Universidade Regional Integrada Do Alto Uruguai E das Missões, CEP: 99709-910, Erechim, RS, Brasil
| | - Jamile Zeni
- Department of Food Engineering, Universidade Regional Integrada Do Alto Uruguai E das Missões, CEP: 99709-910, Erechim, RS, Brasil.
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High lactobionic acid production by immobilized Zymomonas mobilis cells: a great step for large-scale process. Bioprocess Biosyst Eng 2020; 43:1265-1276. [PMID: 32172349 DOI: 10.1007/s00449-020-02323-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 03/04/2020] [Indexed: 10/24/2022]
Abstract
Lactobionic acid and sorbitol are produced from lactose and fructose in reactions catalyzed by glucose-fructose oxidoreductase and glucono-δ-lactonase, periplasmic enzymes present in Zymomonas mobilis cells. Considering the previously established laboratory-scale process parameters, the bioproduction of lactobionic acid was explored to enable the transfer of this technology to the productive sector. Aspects such as pH, temperature, reuse and storage conditions of Ca-alginate immobilized Z. mobilis cells, and large-scale bioconversion were assessed. Greatest catalyst performance was observed between pH range of 6.4 and 6.8 and from 39 to 43 °C. The immobilized biocatalyst was reused for twenty three 24-h batches preserving the enzymatic activity. The activity was maintained during biocatalyst storage for up to 120 days. Statistically similar results, approximately 510 mmol/L of lactobionic acid, were attained in bioconversion of 0.2 and 3.0 L, indicating the potential of this technique of lactobionic acid production to be scaled up to the industrial level.
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Assessment of different systems for the production of aldonic acids and sorbitol by calcium alginate-immobilized Zymomonas mobilis cells. Bioprocess Biosyst Eng 2017; 41:185-194. [DOI: 10.1007/s00449-017-1856-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 10/13/2017] [Indexed: 11/26/2022]
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Bezerra CS, de Farias Lemos CMG, de Sousa M, Gonçalves LRB. Enzyme immobilization onto renewable polymeric matrixes: Past, present, and future trends. J Appl Polym Sci 2015. [DOI: 10.1002/app.42125] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Camilla Salviano Bezerra
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
| | | | - Marylane de Sousa
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
| | - Luciana Rocha Barros Gonçalves
- Departamento de Engenharia Química; Universidade Federal do Ceará; Campus do Pici, Bloco 709, Fortaleza Ceará 60440-554 Brazil
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An K, Hu F, Bao J. Simultaneous saccharification of inulin and starch using commercial glucoamylase and the subsequent bioconversion to high titer sorbitol and gluconic acid. Appl Biochem Biotechnol 2013; 171:2093-104. [PMID: 24026410 DOI: 10.1007/s12010-013-0278-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Accepted: 04/30/2013] [Indexed: 11/28/2022]
Abstract
A new bioprocess for production of sorbitol and gluconic acid from two low-cost feedstocks, inulin and cassava starch, using a commercially available enzyme was proposed in this study. The commercial glucoamylase GA-L NEW from Genencor was found to demonstrate a high inulinase activity for hydrolysis of inulin into fructose and glucose. The glucoamylase was used to replace the expensive and not commercially available inulinase enzyme for simultaneous saccharification of inulin and starch into high titer glucose and fructose hydrolysate. The glucose and fructose in the hydrolysate were converted into sorbitol and gluconic acid using immobilized whole cells of the recombinant Zymomonas mobilis strain. The high gluconic acid concentration of 193 g/L and sorbitol concentration of 180 g/L with the overall yield of 97.3 % were obtained in the batch operations. The present study provided a practical production method of sorbitol and gluconic acid from low cost feedstocks and enzymes.
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Affiliation(s)
- Kehong An
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
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Malvessi E, Carra S, Pasquali FC, Kern DB, da Silveira MM, Ayub MAZ. Production of organic acids by periplasmic enzymes present in free and immobilized cells of Zymomonas mobilis. ACTA ACUST UNITED AC 2013; 40:1-10. [DOI: 10.1007/s10295-012-1198-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 09/03/2012] [Indexed: 11/29/2022]
Abstract
Abstract
In this work the periplasmic enzymatic complex glucose-fructose oxidoreductase (GFOR)/glucono-δ-lactonase (GL) of permeabilized free or immobilized cells of Zymomonas mobilis was evaluated for the bioconversion of mixtures of fructose and different aldoses into organic acids. For all tested pairs of substrates with permeabilized free-cells, the best enzymatic activities were obtained in reactions with pH around 6.4 and temperatures ranging from 39 to 45 °C. Decreasing enzyme/substrate affinities were observed when fructose was in the mixture with glucose, maltose, galactose, and lactose, in this order. In bioconversion runs with 0.7 mol l−1 of fructose and with aldose, with permeabilized free-cells of Z. mobilis, maximal concentrations of the respective aldonic acids of 0.64, 0.57, 0.51, and 0.51 mol l−1 were achieved, with conversion yields of 95, 88, 78, and 78 %, respectively. Due to the important applications of lactobionic acid, the formation of this substance by the enzymatic GFOR/GL complex in Ca-alginate-immobilized cells was assessed. The highest GFOR/GL activities were found at pH 7.0–8.0 and temperatures of 47–50 °C. However, when a 24 h bioconversion run was carried out, it was observed that a combination of pH 6.4 and temperature of 47 °C led to the best results. In this case, despite the fact that Ca-alginate acts as a barrier for the diffusion of substrates and products, maximal lactobionic acid concentration, conversion yields and specific productivity similar to those obtained with permeabilized free-cells were achieved.
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Affiliation(s)
- Eloane Malvessi
- grid.286784.7 Biotechnology Institute University of Caxias do Sul PO Box 1352 95001-970 Caxias do Sul RS Brazil
- grid.8532.c 0000000122007498 Biotechnology and Biochemical Engineering Laboratory (BiotecLab) Federal University of Rio Grande do Sul State PO Box 15090 91501-970 Porto Alegre RS Brazil
| | - Sabrina Carra
- grid.286784.7 Biotechnology Institute University of Caxias do Sul PO Box 1352 95001-970 Caxias do Sul RS Brazil
| | - Flávia Cristina Pasquali
- grid.286784.7 Biotechnology Institute University of Caxias do Sul PO Box 1352 95001-970 Caxias do Sul RS Brazil
| | - Denise Bizarro Kern
- grid.286784.7 Biotechnology Institute University of Caxias do Sul PO Box 1352 95001-970 Caxias do Sul RS Brazil
| | - Mauricio Moura da Silveira
- grid.286784.7 Biotechnology Institute University of Caxias do Sul PO Box 1352 95001-970 Caxias do Sul RS Brazil
| | - Marco Antônio Záchia Ayub
- grid.8532.c 0000000122007498 Biotechnology and Biochemical Engineering Laboratory (BiotecLab) Federal University of Rio Grande do Sul State PO Box 15090 91501-970 Porto Alegre RS Brazil
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Malvessi E, Carra S, da Silveira MM, Ayub MAZ. Effect of substrate concentration, pH, and temperature on the activity of the complex glucose–fructose oxidoreductase/glucono-δ-lactonase present in calcium alginate-immobilized Zymomonas mobilis cells. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2010.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kamrat T, Nidetzky B. Entrapment in E. coli improves the operational stability of recombinant β-glycosidase CelB from Pyrococcus furiosus and facilitates biocatalyst recovery. J Biotechnol 2007; 129:69-76. [PMID: 17212972 DOI: 10.1016/j.jbiotec.2006.11.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2005] [Revised: 07/07/2006] [Accepted: 07/18/2006] [Indexed: 11/16/2022]
Abstract
beta-Glycosidase CelB from the hyperthermophilic archaeon Pyrococcus furiosus is a versatile biocatalyst that has been used for the hydrolysis and synthesis of beta-d-glycosidic compounds at high temperatures and in non-conventional solvents. In spite of its outstanding thermal stability, CelB is prone to inactivation in the presence of reducing sugars and through recirculation in loop enzyme reactors. Entrapment into E. coli cells was used here to improve the stability of recombinant CelB under conditions promoting strong inactivation. Glutardialdehyde-mediated protein cross-linking or rigidification of the cell membrane by adding magnesium ions was required to prevent release of CelB from within the cell into the bulk solution. In the presence of 1M glucose or when applying recirculation rates of 2.6 min(-1), the entrapped enzyme was around two-fold more stable at 80 degrees C than free CelB. The significance of the stabilisation was attenuated by the decrease in CelB initial activity which was due to cross-linking and glutardialdehyde concentration-dependent. Entrapment facilitated downstream processing of CelB and biocatalyst recovery in repeated batchwise conversions of lactose at elevated temperatures.
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Affiliation(s)
- Thomas Kamrat
- Research Centre Applied Biocatalysis, Petersgasse 14, c/o Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, Petersgasse 12, A-8010 Graz, Austria
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