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Some Pectinolytic and Cellulolytic Enzyme Activities of Fungi Causing Rots of Cocoyams

Some Pectinolytic and Cellulolytic Enzyme Activities of Fungi Causing Rots of Cocoyams Representative isolates of Aspergillus niger, Botryodiplodia theobromae, Corticium rolfsii, Geotrichum candidum, Fusarium oxysporum and F solani recovered from rotten cocoyams were studied for the production of pectinolytic and cellulolytic enzymes. All the isolates elaborated high levels of hydrolase, lyase and pectinesterase in cocoyam tissue medium and lyase and pectinesterase in pectin medium. There were no significant differences in the overall levels of lyase and pectinesterase activities produced by all the isolates in both media. The level of hydrolase, lyase and pectinesterase activities individually produced by A niger, B theobromae and C rolfsii in both media was significantly higher than that of any other isolate. The highest hydrolase activity was produced by C rolfsii in cocoyam medium while A niger produced the highest lyase activity in pectin medium. Maximum pectinesterase activity was obtained from B theobromae and C rolfsii in pectin medium. All the test isolates produced cellulase in a medium containing carboxymethyl cellulose with C rolfsii showing significantly high activity followed by F oxysporum and A niger. © 1997 SCI. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Science of Food and Agriculture Wiley

Some Pectinolytic and Cellulolytic Enzyme Activities of Fungi Causing Rots of Cocoyams

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References (14)

Publisher
Wiley
Copyright
Copyright © 1997 SCI
ISSN
0022-5142
eISSN
1097-0010
DOI
10.1002/(SICI)1097-0010(199704)73:4<432::AID-JSFA744>3.0.CO;2-O
Publisher site
See Article on Publisher Site

Abstract

Representative isolates of Aspergillus niger, Botryodiplodia theobromae, Corticium rolfsii, Geotrichum candidum, Fusarium oxysporum and F solani recovered from rotten cocoyams were studied for the production of pectinolytic and cellulolytic enzymes. All the isolates elaborated high levels of hydrolase, lyase and pectinesterase in cocoyam tissue medium and lyase and pectinesterase in pectin medium. There were no significant differences in the overall levels of lyase and pectinesterase activities produced by all the isolates in both media. The level of hydrolase, lyase and pectinesterase activities individually produced by A niger, B theobromae and C rolfsii in both media was significantly higher than that of any other isolate. The highest hydrolase activity was produced by C rolfsii in cocoyam medium while A niger produced the highest lyase activity in pectin medium. Maximum pectinesterase activity was obtained from B theobromae and C rolfsii in pectin medium. All the test isolates produced cellulase in a medium containing carboxymethyl cellulose with C rolfsii showing significantly high activity followed by F oxysporum and A niger. © 1997 SCI.

Journal

Journal of the Science of Food and AgricultureWiley

Published: Apr 1, 1997

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