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Ficanha AMM, Oro CED, Franceschi E, Dallago RM, Mignoni ML. Evaluation of Different Ionic Liquids as Additives in the Immobilization of Lipase CAL B by Sol-Gel Technique. Appl Biochem Biotechnol 2021; 193:2162-2181. [PMID: 33683550 DOI: 10.1007/s12010-021-03533-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 02/26/2021] [Indexed: 11/30/2022]
Abstract
Sol-gel technique aiming enzymatic immobilization in situ with ionic liquids as additives is poorly studied. In this process, the addition of the enzyme is carried out in the synthesis of the support. The characteristics of ionic liquids, such as low vapor pressure, thermal stability, and non-flammability, make them strong candidates for use as immobilization additives. The objective of the present study was to immobilize the Candida antarctica B lipase by the sol-gel technique using ionic liquids as additives. The optimum points determined for ionic liquids 1-butyl-3-methylimidazolium chloride, 1-octyl-3-methylimidazolium bromide, and 1 hexadecyl-3-methylimimidazolium were 0.30, 0.27, and 0.22 g/mL of enzyme and 1.60, 1.52, and 1.52% of additive, respectively. The amount of enzyme and ionic liquids used in aerogel immobilization was the same as the optimized values in the xerogel immobilization process (for each ionic liquid). Ionic liquids proved to be good additives in the enzymatic immobilization process. Xerogel, regardless of the ionic liquid, presented a greater number of use cycles and better thermal stability compared to aerogel.
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Affiliation(s)
- Aline Matuella Moreira Ficanha
- Department of Engineering, Centro de Ensino Riograndense, Marau, RS, CEP 99150000, Brazil. .,Department of Food and Chemical Engineering, URI - Erechim, 1621, Sete de Setembro Av, Erechim, RS, 99709-910, Brazil.
| | - Carolina Elisa Demaman Oro
- Department of Food and Chemical Engineering, URI - Erechim, 1621, Sete de Setembro Av, Erechim, RS, 99709-910, Brazil
| | - Elton Franceschi
- Center for Studies on Colloidal Systems (NUESC)/Institute of Technology and Research (ITP), Postgraduate Programme in Industrial Biotechnology (PBI), Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, SE, CEP 49032-490, Brazil
| | - Rogério Marcos Dallago
- Department of Food and Chemical Engineering, URI - Erechim, 1621, Sete de Setembro Av, Erechim, RS, 99709-910, Brazil
| | - Marcelo Luis Mignoni
- Department of Food and Chemical Engineering, URI - Erechim, 1621, Sete de Setembro Av, Erechim, RS, 99709-910, Brazil
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Immobilization of Eversa ® Transform via CLEA Technology Converts It in a Suitable Biocatalyst for Biolubricant Production Using Waste Cooking Oil. Molecules 2021; 26:molecules26010193. [PMID: 33401727 PMCID: PMC7794791 DOI: 10.3390/molecules26010193] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 12/27/2022] Open
Abstract
The performance of the previously optimized magnetic cross-linked enzyme aggregate of Eversa (Eversa-mCLEA) in the enzymatic synthesis of biolubricants by transesterification of waste cooking oil (WCO) with different alcohols has been evaluated. Eversa-mCLEA showed good activities using these alcohols, reaching a transesterification activity with isoamyl alcohol around 10-fold higher than with methanol. Yields of isoamyl fatty acid ester synthesis were similar using WCO or refined oil, confirming that this biocatalyst could be utilized to transform this residue into a valuable product. The effects of WCO/isoamyl alcohol molar ratio and enzyme load on the synthesis of biolubricant were also investigated. A maximum yield of around 90 wt.% was reached after 72 h of reaction using an enzyme load of 12 esterification units/g oil and a WCO/alcohol molar ratio of 1:6 in a solvent-free system. At the same conditions, the liquid Eversa yielded a maximum ester yield of only 34%. This study demonstrated the great changes in the enzyme properties that can be derived from a proper immobilization system. Moreover, it also shows the potential of WCO as a feedstock for the production of isoamyl fatty acid esters, which are potential candidates as biolubricants.
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Long J, Pan T, Xie Z, Xu X, Jin Z. Co-immobilization of β-fructofuranosidase and glucose oxidase improves the stability of Bi-enzymes and the production of lactosucrose. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109460] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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