利用玉米浸泡液生产活性干酵母的研究

Production of Active Dry Yeast by Using Corn Steep Liquid

摘要:

采用玉米浸泡液作为原料，利用其中的碳源、氮源、无机盐等营养物质发酵生产活性干酵母。探索并优化其发酵条件，结果表明：最佳发酵条件为，玉米浸泡液浓度为14.00%，培养基pH为5.5，初始加入的葡萄糖为200.00 mg/mL，接种量为1.20%，发酵时间为46 h，得到的干酵母产量达到最高17.80 mg/mL，而且细胞存活率为96.40%。

Abstract:

Com steep liquor was used as fermentation raw materialfor production of active dry yeast by fermentation. exploring and optimize the fermentation conditions. The results showed that the best fermentation conditions were corn steep liquor in culture medium 14.00%, pH 5.5, initial glucose 200mg/ml, inoculum size 1.2% ferment time 46 hours, under which the dry yeast could reached the highest yield of 17.00mg/ml, and cell survival rate was 96.40%.