Determination of pectin methylesterase activity in commercial pectinases and study of the inactivation kinetics through two potentiometric procedures
نویسندگان
چکیده
Received 10/6/2009 Accepted 14/2/2010 (004240) 1 Laboratório L11 de Pesquisa Química Analítica e Inorgânica, Departamento de Química, Mestrado em Ciência e Tecnologia de Alimentos, Universidade Estadual de Ponta Grossa – UEPG, Av. Carlos Cavalcanti, 4748, CEP 84030-900, Ponta Grossa – PR, Brasil, E-mail: [email protected] *Corresponding author Determination of pectin methylesterase activity in commercial pectinases and study of the inactivation kinetics through two potentiometric procedures
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Kinetic parameters for the thermal inactivation of quality-related enzymes in carrots and potatoes.
Kinetic parameters for the thermal inactivation of several enzymes in carrot and potato homogenates have been determined. In carrots the most heat-resistant activity was polygalacturonase, followed by peroxidase and pectinmethylesterase. In potatoes peroxidase was the most resistant, followed by pectin methylesterase, polyphenol oxidase, and lipoxygenase. There were several notable similarities...
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