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Type: Artigo de periódico
Title: Lipase-catalyzed synthesis of isoamyl acetate in free-solvent media- optimization using a central composite design
Author: Macedo, GA
Pastore, GM
Rodrigues, MI
Abstract: The catalytic action of two non commercial lipases (E.C. in the synthesis of isoamyl acetate in a solvent-free system, were tested using an experimental design in order to better understand the relationship between the reaction variables. Yields ranging from 67 to 77 % molar conversion were achieved. The synthesis of isoamyl acetate catalyzed by the chosen lipase (Rhizopus sp.) was optimized, in order to maximize the molar conversion (yield, Y) in a solvent-free system. Response surface methodology involving the substrate molar ratio (RM) and amount of lipase (L) was used, and a second order model was employed to generate response surfaces. The optimum conditions to obtain Y max = 80% were: RM = (2:1); L = 8.7% (w/w), 40 degrees C, and 48 hours of reaction time.
Subject: Flavour esters
response surface methodology
Country: Finlândia
Editor: Wfl Publ
Rights: fechado
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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