BIOCONVERSION OF SUGAR-INDUSTRY BY-PRODUCTS - MOLASSES AND SUGAR-BEET PULP FOR SINGLE CELL PROTEIN-PRODUCTION BY YEASTS

被引：27
作者：
NIGAM, P
VOGEL, M
机构：
[1] Zentral Labor, Süddeutsche Zucker-AG
来源：
BIOMASS & BIOENERGY | 1991年 / 1卷 / 06期
关键词：
SUGAR BEET PULP; MOLASSES; YEAST; SIMULTANEOUS SACCHARIFICATION FERMENTATION; SINGLE-CELL PROTEIN;
D O I：
10.1016/0961-9534(91)90014-4
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In the bioconversion studies of molasses and sugarbeet pulp to single cell protein by four Candida spp. (utilis, tropicalis, parapsilosis and solani) maximum protein content of 37.5 and 43.4% was achieved from the two substrates. respectively, in 48 h. Candida utilis and C. tropicalis performed better than the other yeasts. The maximum bioconversion efficiency for molasses (43%) was given by C. parapsilosis and for beet pulp (46%) by C. tropicalis in 48 h batch flask fermentations. The bioconversion of beet pulp under controlled conditions was studied using C. tropicalis in a 51 fermentor, which gave 29 and 48% product recovery with 39 and 25% protein level, in a two- and one-stage process, respectively. The one-stage process (simultaneous saccharification and fermentation) was also run in a larger volume and gave 50% product recovery with 29% protein content. The results are discussed in terms of biomass yield, protein content and bioconversion efficiency of yeasts under each condition.
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收藏
页码：339 / 345
页数：7
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