摘要
半纤维素通常占天然纤维性材料的10—40%,通过蒸汽爆碎处理半纤维素可发生自水解作用,生成以木寡糖为主的水解产物。如能有效地将这些水解产物转化成有用产品,将明显改善纤维素微生物转化工艺的经济效益,并减少可能造成的二次污染。目前,木糖酒精发酵仍有一定困难。根据我国蛋白质饲料短缺的现状,我们开展了利用纤维性废料的蒸汽爆碎水解物发酵生产菌体蛋白饲料的研究。
The cellulosic waste of paper mill was pretreated by steam explosion.Hemicellulosehydrolysate was washed out by hot water.Trichosporon cutaneum 851 was selected forSCP production from the water extract.After mutation,a higher protein content(47.0%)mutant,T.cutaneum 851S,was obtained by selecting negative mutants of glycogen andlipid content.Effects of total sugar concentration,nitrogen sources,pH and temperatureon the growth of 851S were investigated.After cultivation for 16 h,biomass concentrationbecame 10.5 g/L with a yield of 0.75 g/g total sugar.
出处
《微生物学报》
CAS
CSCD
北大核心
1993年第3期236-238,共3页
Acta Microbiologica Sinica
基金
国家教委优秀年轻教师基金
轻工部科技发展基金项目
关键词
半纤维素
菌体蛋白
发酵
菌种
Hemicellulose
Trichosporon cutaneum
Single cell protein (SCP)
