Artigo
α-Galactosidases production by Debaryomyces hansenii UFV-1
Autor
Viana, Pollyanna Amaral
Rezende, Sebastião Tavares de
Passos, Flávia Maria Lopes
Machado, Solimar Gonçalves
Maitan, Gabriela Picollo
Coelho, Vinicio Tadeu da Silva
Guimarães, Valéria Monteze
Institución
Resumen
Extracellular and intracellular α-galactosidases were produced by yeast Debaryomyces hansenii UFV-1 grown on different media with several carbon sources. D. hansenii grown in YP-medium (1% yeast extract and 2% peptone) presented maximum cell mass (8.45 mg/mL) after 36 h of cultivation, with lactose as carbon source, followed by sucrose, glucose, raffinose, and galactose. Higher extracellular and intracellular α-galactosidases activities were observed at 48 h of D. hansenii cultivation in YPmedium containing galactose (0.97 and 5.27 U/mL) and lactose (1.28 and 4.88 U/mL), supporting the evidence for the model of induction for the yeast GAL/MEL regulon, such as described in Sacharomyces cereviseae.