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NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Biotechnology (IJBT) >
IJBT Vol.11 [2012] >
IJBT Vol.11(2) [April 2012] >
| Title: | Bio-delignification ability of locally available edible mushrooms for the biological treatment of crop residues |
| Authors: | Vijya, Ch
Reddy, R Malikarjuna |
| Keywords: | Biodelignification
Edible mushrooms
Lignolytic enzymes
Paddy straw
Schizophyllum commune |
| Issue Date: | Apr-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The crop residues, such as, paddy straw,
have low digestibility and, therefore, efforts have been made in the present study
for microbial and enzymatic delignification of crude fiber to improve its
nutritive value before feeding to animals. Two types of edible mushrooms were
collected from the market and screened qualitatively for their ability to
produce ligninases through guaiacol assay. The oyster mushroom showed maximum
lignolytic activity and, thus, it was used in the study for the treatment of
paddy straw. After sequencing of the mushroom culture used, it was identified
as Schizophyllum commune. The
cellulolytic activity and lignolytic activity of S. commune was assayed. The organism showed high cellulolytic as
well as lignolytic activity at 25-30°C temperature and at neutral pH. As low cellulolytic and higher
lignolytic activities are desirable for successful biodelignification of straw,
different chemicals at various concentrations were used to suppress the
cellulolytic activity. Of all the chemicals used, veratryl alcohol at 30 mM concentration was able to suppress the
cellulolytic enzyme activity by 90%, while enhancing the lignolytic activity of
the organism by 50-60%. Therefore, on the basis of present study, S. commune could be recommended for
delignification of crop residues with the addition of appropriate quantity of
veratryl alcohol. |
| Page(s): | 191-196 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0967 (Online); 0972-5849 (Print) |
| Source: | IJBT Vol.11(2) [April 2012]
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