Pectolytic Enzymes of the Industrial Fungus Aspergillus kawachii

Aspergillus kawachii extracellular pectinases were screened in liquid cultures with different carbon sources. The fungus grown on citrus pectin or lemon pomace produced at least one of these inducible pectinases: acidic polygalacturonase, pectin lyase, pectin methylesterase, α-L-arabinofuranosidase,...

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Published inFood science and biotechnology Vol. 18; no. 6
Main Authors Vita, Carolina Elena, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina, Contreras Esquivel, Juan Carlos, Universidad Autonoma de Coahuila, Saltillo, Coahuila, Mexico, Voget, Claudio Enrique, CINDEFI (UNLP, CCT-La Plata, CONICET), La Plata, Argentina
Format Journal Article
LanguageEnglish
Published 01.12.2009
Subjects
Aspergillus kawachii
carbon source
GLICOSIDASAS
GLYCOSIDASE
GLYCOSIDASES
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Summary:Aspergillus kawachii extracellular pectinases were screened in liquid cultures with different carbon sources. The fungus grown on citrus pectin or lemon pomace produced at least one of these inducible pectinases: acidic polygalacturonase, pectin lyase, pectin methylesterase, α-L-arabinofuranosidase, α-1,5-endoarabinase, β-D-galactosidase/exogalactanase, and β-1,4-endogalactanase. The lemon-pomace filtrates also contained significant α-L-rhamnosidase and β-D-fucosidase activities. Most of the screened pectinases were active at pH 2.0-2.5, indicating that the A. kawachii enzymes were acidophilic. Under the culture conditions employed we could not detect enzymatic degradation of soybean rhamnogalacturonan. The A. kawachii pectinase-production-related regulatory phenomena of induction-repression resemble those described for other Aspergillus sp.
Bibliography:2010003405
Q01
ISSN:1226-7708
2092-6456