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Type: Artigo de periódico
Title: Enantioselective behavior of lipases from Aspergillus niger immobilized in different supports
Author: da Silva, VCF
Contesini, FJ
Carvalho, PD
Abstract: Considering the extraordinary microbial diversity and importance of fungi as enzyme producers, the search for new biocatalysts with special characteristics and possible applications in biocatalysis is of great interest. Here, we report the performance in the resolution of racemic ibuprofen of a native enantioselective lipase from Aspergillus niger, free and immobilized in five types of support (Accurel EP-100, Amberlite MB-1, Celite, Montmorillonite K10 and Silica gel). Amberlite MB-1 was found to be the best support, with a conversion of 38.2%, enantiomeric excess of 50.7% and enantiomeric ratio (E value) of 19 in 72 h of reaction. After a thorough optimization of several parameters, the E value of the immobilized Aspergillus niger lipase was increased (E = 23) in a shorter reaction period (48 h) at 35A degrees C. Moreover, the immobilized Aspergillus niger lipase maintained an esterification activity of at least 80% after 8 months of storage at 4A degrees C and could be reused at least six times.
Subject: Immobilization
Aspergillus niger
Country: Alemanha
Editor: Springer Heidelberg
Citation: Journal Of Industrial Microbiology & Biotechnology. Springer Heidelberg, v. 36, n. 7, n. 949, n. 954, 2009.
Rights: fechado
Identifier DOI: 10.1007/s10295-009-0573-4
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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