Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/81512
Type: Artigo de periódico
Title: Optimized synthesis of citronellyl flavour esters using free and immobilized lipase from Rhizopus sp.
Author: Melo, LLMM
Pastore, GM
Macedo, GA
Abstract: Microbial lipase produced by Rhizopus sp. was tested for the synthesis of citronellyl butyrate and citronellyl valerate. Lipase showed more ability to catalyze the synthesis of citronellyl butyrate. This process was optimized using response surface methodology (RSM) based on a five-level, two variable central composite rotatable design (CCRD). The optimum conditions were molar ratio of 2.41:1 (alcohol: acid) and lipase amount of 6.12% (w/w) and the yield achieved 100% (molar conversion) in 48 It. Lipase was also immobilized onto celite and its activity improved, leading to 100% molar conversion in 24 h. However, immobilized lipase did not exhibited operational stability after a few reaction cycles. (c) 2005 Elsevier Ltd. All rights reserved.
Subject: enzymatic synthesis
Rhizopus sp lipase
citronellyl butyrate
enzyme immobilization
esterification
central composite rotatable design (CCRD)
response surface methodology (RSM)
Country: Inglaterra
Editor: Elsevier Sci Ltd
Rights: fechado
Identifier DOI: 10.1016/j.procbio.2005.01.019
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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