TITLE

Improved bioethanol production through simultaneous saccharification and fermentation of lignocellulosic agricultural wastes by Kluyveromyces marxianus 6556

AUTHOR(S)
Meng Zhang; Shukla, Pratyoosh; Ayyachamy, Manimaran; Permaul, Kugen; Singh, Suren
PUB. DATE
June 2010
SOURCE
World Journal of Microbiology & Biotechnology;Jun2010, Vol. 26 Issue 6, p1041
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The combined effect of simultaneous saccharification and fermentation and separate hydrolysis and fermentation (SHF) for ethanol production by Kluyveromyces marxianus 6556 was studied using two lignocellulosic feedstocks viz., corncob and soybean cake. The ethanologenic efficiency of K. marxianus 6556 was observed as 28% (theoretical yield) in a fermentation medium containing glucose, but, there was no ethanol production by cells grown on xylose. A maximum sugar release of 888 mg/g corncob and 552 mg/g soybean cake was achieved through acid hydrolysis pretreatment. Furthermore, corncob and soybean cake treated with commercial cellulase (100 IU for 48 h) from Trichoderma reesei yielded reducing sugars of 205 and 100 mg/g, respectively. Simultaneous saccharification and fermentation resulted in highest ethanol production of 5.68 g/l on corncob and 2.14 g/l on soybean cake after 48 h of incubation. On the contrary, the presence of inhibitors decreased the overall ethanol yield in the hydrolysates obtained through SHF of corncob and soybean cake.
ACCESSION #
50258493

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics