THE REDUCTION OF XYLOSE TO XYLITOL BY CANDIDA-GUILLIERMONDII AND CANDIDA-PARAPSILOSIS - INCIDENCE OF OXYGEN AND PH

被引:35
作者
NOLLEAU, V [1 ]
PREZIOSIBELLOY, L [1 ]
NAVARRO, JM [1 ]
机构
[1] UNIV MONTPELLIER 2,ISIM,F-34095 MONTPELLIER 5,FRANCE
关键词
D O I
10.1007/BF00130800
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
The ability of C. guilliermondii and C. parapsilosis to ferment xylose to xylitol was evaluated under different oxygen transfer rates in order to enhance the xylitol yield. In C. guilliermondii, a maximal xylitol yield of 0.66 g/g was obtained when oxygen transfer rate was 2.2 mmol/l.h. Optimal conditions to produce xylitol by C. parapsilosis (0.75 g/g) arose from cultures at pH 4.75 with 0.4 mmoles of oxygen/l.h. The response of the yeasts to anaerobic conditions has shown that oxygen was required for xylose metabolism.
引用
收藏
页码:417 / 422
页数:6
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