NDLI: Evaluation of Enzyme Activity and Fiber Content of Soybean Cotyledon Fiber and Distiller’s Dried Grains with Solubles by Solid State Fermentation

Content Provider	Springer Nature Link
Author	Yang, Shengli Lio, JunYi Wang, Tong
Copyright Year	2012
Abstract	To increase the value of coproducts from corn ethanol fermentation and soybean aqueous processing, distiller’s dried grains with solubles (DDGS) and soybean cotyledon fiber were used as the substrates for solid state fermentation (SSF) to improve feed digestibility. Aspergillus oryzae, Trichoderma reesei, and Phanerochaete chrysosporium were chosen as they produce desirable enzymes and are widely used in SSF for feed. The results showed that the cellulase and xylanase activities were significantly increased after 7 days of fermentation, and cellulose and hemicellulose degradation was also greatly increased. When soybean fiber was used as SSF substrate, the maximum activities of the cellulase and xylanase were 10.3 and 84.2 IU/g substrate (dry weight basis) after SSF treatment, respectively. However, the enzyme activities were relatively low in DDGS, and the growth of the three fungi was poor. The fungi grew better when soybean cotyledon fiber was added to DDGS, and cellulase and xylanase activity increased with the increase of soybean fiber content. Porosity was identified as an important factor for SSF because the addition of inert soybean hull alone improved the fungi growth significantly. These data suggest that the nutritional value of DDGS and soybean cotyledon fiber as monogastric animal feed could be greatly enhanced by SSF treatment.
Starting Page	109
Ending Page	121
Page Count	13
File Format	PDF
ISSN	02732289
Journal	Applied Biochemistry and Biotechnology
Volume Number	167
Issue Number	1
e-ISSN	15590291
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-04-18
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cellulase DDGS Enzyme activity Fungi Solid state fermentation Soybean cotyledon fiber Xylanase Biotechnology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Biology Environmental Engineering Biochemistry Bioengineering Applied Microbiology and Biotechnology Biotechnology

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