Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/61774
標題: Fermentation of rice hull by Aspergillus japonicus under ultrasonic pretreatment
作者: Yang, C.Y.
方 繼
Sheih, I.C.
Fang, T.J.
關鍵字: Rice hull
Ultrasonic pretreatment
Fermentation
Xylooligosaccharide
husk autohydrolysis liquors
purification
ethanol
xylooligosaccharides
oligosaccharides
hemicelluloses
fermentability
hydrolysis
期刊/報告no:: Ultrasonics Sonochemistry, Volume 19, Issue 3, Page(s) 687-691.
摘要: The application of ultrasound for treating rice hull used as the fermentation substrate for xylooligosaccharides production was investigated. Aspergillus japonicus CY6-1 was selected to produce cellulolytic and xylanolytic enzymes from untreated rice hull (RH) and rice hull treated with ultrasound (USRH-M). The hemicellulose yield was increased to 1.4-fold with ultrasound, and treatment time was greatly shortened from 24 h to 1.5 h at 80 degrees C and 300 W/28 kHz. The morphology of RH from various pretreatments was observed with field emission scanning electron microscope (FESEM), revealing the surface structure of USRH-M smoother than that of RH. USRH-M was much easier to be utilized by fungi, to extend the stability of enzyme activity and to increase activities of CMCase, beta-glucosidase, and xylanase compared with those of untreated RH. The final fermentative products were xylotetraose, xylohexaose, and higher molecular weight xylooligosaccharides, achieving xylohexaose yield for USRH-M 80% higher than that for RH group. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/61774
ISSN: 1350-4177
文章連結: http://dx.doi.org/10.1016/j.ultsonch.2011.11.015
Appears in Collections:食品暨應用生物科技學系

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