Comparative fermentability of enzymatic and acid hydrolysates of steam-pretreated aspenwood hemicellulose by Pichia stipitis CBS 5776

Authors

J.J. Wilson
L. Deschatelets
N.K. Nishikawa

Document Type

Article

Journal/Book Title/Conference

Appl. Microbiol Biotech

Volume

31

Issue

5/6

First Page

592

Last Page

596

Publication Date

10-1989

Abstract

Enzymatic hydrolysates of hemicellulose from steam-pretreated aspenwood were more fermentable than the acid hydrolysate after rotoevaporation or ethyl acetate extraction treatments to remove acetic acid and sugar- and lignin-degradation products prior to fermentation by Pichia stipitis CBS 5776. Total xylose and xylobiose utilization from 5.0% (w/v) ethyl acetate extracted enzymatic hydrolysate was observed with an ethanol yield of 0.47 g ethanol/g total available substrate and an ethanol production rate of 0.20 g·l^-1 per hour in 72 h batch fermentation.

Recommended Citation

Wilson, J. J.; Deschatelets, L.; Nishikawa, N. K. 1989. Comparative fermentability of enzymatic and acid hydrolysates of steam-pretreated aspenwood hemicellulose by Pichia stipitis CBS 5776. Appl. Microbiol Biotech. 31 (5/6): 592-596.