使用固定在预制纤维素珠中的酵母细胞连续生产乙醇。

Continuous production of ethanol using yeast cells immobilized in preformed cellulose beads.

作者信息

Szajáni B, Buzás Z, Dallmann K, Gimesi I, Krisch J, Tóth M

机构信息

Department of Biochemistry, Attila József University, Szeged, Hungary.

出版信息

Appl Microbiol Biotechnol. 1996 Sep;46(2):122-5. doi: 10.1007/s002530050792.

DOI:10.1007/s002530050792

PMID:8987641

Abstract

Saccharomyces cerevisiae cells were immobilized on preformed cellulose beads by adsorption. The fermentation capacity of the immobilized yeast cells was found to be practically independent of the hydrogen ion concentration between pH 3.1 and 6.25. The fermentation capacity was maximal at 30 degrees C. The immobilized yeast cells were used for continuous production of ethanol in a fluidized-bead reactor. The average values characteristic for the process were an ethanol concentration of 41.9 +/- 0.1 g1(-1), a fermentation efficiency of 82.9 +/- 2.1% and a volumetric productivity of 3.94 +/- 0.52 g1(-1) h-1.

摘要

酿酒酵母细胞通过吸附固定在预制的纤维素珠上。发现固定化酵母细胞的发酵能力在pH 3.1至6.25之间实际上与氢离子浓度无关。发酵能力在30℃时最大。固定化酵母细胞用于在流化珠反应器中连续生产乙醇。该过程的特征平均值为乙醇浓度41.9±0.1 g1(-1)，发酵效率82.9±2.1%，体积生产率3.94±0.52 g1(-1) h-1。