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Kinetics and Thermodynamics of Thermal Inactivation of β-Galactosidase from Aspergillus oryzae BABT
Klein,Manuela Poletto; Sant’Ana,Voltaire; Hertz,Plinho Francisco; Rodrigues,Rafael Costa; Ninow,Jorge Luiz.
ABSTRACT For optimization of biochemical processes in food and pharmaceutical industries, the evaluation of enzyme inactivation kinetic models is necessary to allow their adequate use. Kinetic studies of thermal inactivation of β-galactosidase from Aspergillus oryzae were conducted in order to critically evaluate mathematical equations presented in the literature. Statistical analysis showed that Weibull model presented the best adequacy to residual enzymatic activity data through the processing time and its kinetic parameters as a function of the temperature, in the range of 58-66 ºC. The investigation suggests the existence of a non-sensitive heat fraction on the enzyme structure, which is relatively stable up to temperatures close to 59 ºC....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Β-Galactosidase; Enzyme Inactivation; Modelling; Protein Denaturation; Weibull.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000100409
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