摘要
本文报道魔芋多糖载体固定化酿酒酵母的生理生化特性。批式发酵试验结果表明,固定化细胞与自然细胞相比较,前者的糖利用速度和乙醇生成速度分别提高28.1%和32.2%,而细胞增殖速度减少了28.0%。前者细胞内大分子组成和某些酶活力分析结果说明,固定化细胞蛋白质(包括含氮量、粗蛋白)、去氧核糖核酸、细胞内聚多糖含量和 EMP 代谢途径的某些酶活性都发生了变化。
The phsiological and biochemical pro-pertics of Saccharomyces cerevisiae cells im-mobilized on Konjac Glucomannan (KGM)were found to be different from those of thesuspended yeast cells.In batch fermentationexperiment it was shown that the rate ofethanol production and glucose consumptionwere 28.1% and 32.2% higher than the freecells.But their growth rate was reduced by28.0%.Measurements of intracellular DNA,protein,polysaccharide and some enzymic ac-tivity of EMP metabolism pathway showedthat the observed changes in the immobilizedyeast cells have arisen.
出处
《微生物学报》
CAS
CSCD
北大核心
1991年第5期390-395,共6页
Acta Microbiologica Sinica
基金
国家科委“7·5”经费资助
关键词
魔芋多糖
固定化酵母
Konjac glucomannan
Immobilized yeast
