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Utilization of deoiled Jatropha curcas seed cake for production of xylanase from thermophilic Scytalidium thermophilum
被引:24
作者:
Joshi, Chetna
[1
]
Khare, S. K.
[1
]
机构:
[1] Indian Inst Technol, Dept Chem, Enzyme & Microbial Biochem Lab, New Delhi 110016, India
关键词:
Biodiesel;
Deoiled Jatropha curcas seed cake;
Solid-state fermentation;
Xylanase;
Scytalidium thermophilum;
SOLID-STATE FERMENTATION;
THERMOMYCES-LANUGINOSUS;
THERMOASCUS-AURANTIACUS;
DEGRADING ENZYMES;
HYPER-PRODUCTION;
OPTIMIZATION;
BAGASSE;
STRAW;
PULP;
D O I:
10.1016/j.biortech.2010.08.070
中图分类号:
S2 [农业工程];
学科分类号:
0828 ;
摘要:
Jatropha curcas is a major biodiesel crop. Large amount of deoiled cake is generated as by-product during biodiesel production from its seeds. Deoiled J. curcas seed cake was assessed as substrate for the production of xylanase from thermophilic fungus Scytalidium thermophilum by solid-state fermentation. The seed cake was efficiently utilized by S. thermophilum for its growth during which it produced good amount of heat stable extracellular xylanase. The solid-state fermentation conditions were optimized for maximum xylanase production. Under the optimized conditions viz. deoiled seed cake supplemented with 1% oat-spelt xylan, adjusted to pH 9.0, moisture content 1:3 w/v, inoculated with 1 x 10(6) spores per 5 g cake and incubated at 45 degrees C. 1455 U xylanase/g deoiled seed cake was obtained. The xylanase was useful in biobleaching of paper pulp. Solid-state fermentation of deoiled cake appears a potentially viable approach for its effective utilization. (C) 2010 Elsevier Ltd. All rights reserved.
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页码:1722 / 1726
页数:5
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