Optimizing Drying Conditions for the Microwave Vacuum Drying of Enzymes

Autor(es)

de Jesus, Sergio S. ^[1] ; Maciel Filho, Rubens ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas Unicamp, Lab Optimizat Design & Adv Control, Dept Chem Proc, Sch Chem Engn, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Drying Technology; v. 29, n. 15, p. 1828-1835, 2011.
• Citações Web of Science: 15

Resumo

The aim of this study was the methodological use of experimental planning for the optimization of microwave vacuum drying of enzymes using alpha-amylase as a model. A factorial in star design-was used to optimize the microwave vacuum-drying process, and the variables were power output and vacuum pressure. The material dehydrated by this technique was analyzed with regard to its enzymatic activity, water activity, and moisture content. Response surface methodology was used to estimate the main effects of vacuum pressure and power on the enzymatic and water activities. The experimental in star design revealed that microwave vacuum drying is influenced mainly by power. The dehydrated product showed high enzymatic activity and low water activity. (AU)

• Processo FAPESP: 01/00571-0 - Modelagem e análise do processo de secagem de enzimas por microondas sob vácuo
• Beneficiário: Rubens Maciel Filho
• Linha de fomento: Auxílio à Pesquisa - Regular
• Processo FAPESP: 99/12379-5 - Secagem por micro-ondas sob vácuo de xilanases produzida por Bacillus pumilus
• Beneficiário: Sergio Santos de Jesus
• Linha de fomento: Bolsas no Brasil - Mestrado