摘要
以树干毕赤酵母 (Pichiastipitis)为发酵菌株 ,利用海藻酸铝凝胶代替海藻酸钙 ,可明显延长固定化酵母的使用寿命 ,海藻酸铝凝胶耐磷酸盐能力是海藻酸钙凝胶的 3倍。海藻酸铝树干毕赤固定化增殖酵母细胞可同步发酵戊糖、己糖 ,以混合糖质量浓度 6 0 g/L( 5 0 %葡萄糖、5 0 %木糖 )为发酵底物 ,成熟醪中酒精质量浓度由 2 6 .0 g/L提高至 2 7.3g/L ,总糖利用率为 93.7%。
Life time of immobilized Pichia stipitis yeast cells was prolonged significantly when the gel was formed with aluminium alginate instead of calcium alginate.Endurance against phosphate of aluminium alginate gel was increased 3 times than that of calcium alginate gel.Glucose-xylose mixture could be co-fermented to ethanol by immobilized Pichia stipitis yeast cells of aluminium alginate.The concentration of ethanol in final broth was enhanced from 26.0 g/L to 27.3 g/L,and utilization ratio of total sugar was 93.7%.
出处
《林产化学与工业》
EI
CAS
CSCD
2002年第2期43-46,共4页
Chemistry and Industry of Forest Products
基金
国家自然科学基金资助项目 ( 39970 5 97)
