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Optimization of alkaline cellulase production by the marine-derived fungus Chaetomium sp. using agricultural and industrial wastes as substrates

DRS at CSIR-National Institute of Oceanography

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Title Optimization of alkaline cellulase production by the marine-derived fungus Chaetomium sp. using agricultural and industrial wastes as substrates
 
Creator Ravindran, C.
Naveenan, T.
Varatharajan, G.R.
 
Subject agro wastes
alkaline cellulase
marine fungi
 
Description Alkaline cellulases were screened from 54 fungal isolates obtained from mangrove leaves and mangrove wood litters as endophytes and wood litter fungi, respectively. Only three fungal isolates tested positive for alkaline cellulases under plate assay, among which Chaetomium sp. (NIOCC 36) was found to grow in a wide range of pH (between 4 and 12). This alkaline tolerant fungus was further tested for production of alkaline cellulases (Beta-endoglucanase, Beta-exoglucanase, Beta-glucosidase) using agricultural and industrial wastes as substrates in submerged fermentation (SMF) and solid state fermentation (SSF) processes. Cotton seed under SSF conditions had maximum enzyme production at high alkaline pH. Cellulase enzymes produced under alkaline cotton seed SSF conditions at 50 degrees C had higher stability and activity than under non-alkaline conditions (range tested: pH 5, 7, 12). The agricultural and industrial wastes used as carbon sources were economical for commercial production of cellulose. The high specific activity, and stability of cellulases under neutral to alkaline pH and high temperature will be of use in various industrial and biotechnological applications.
 
Date 2010-06-21T07:39:05Z
2010-06-21T07:39:05Z
2010
 
Type Journal Article
 
Identifier Botanica Marina, vol.53(3); 275-282
http://drs.nio.org/drs/handle/2264/3637
 
Language en
 
Rights An edited version of this paper was published by Walter de Gruyter. Copyright [2010] Walter de Gruyter.
All efforts have been made to respect the copyright to the best of our
knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Walter de Gruyter