筛选出三株具有不对称还原COBE生成S-异构体的酵母菌，即103酒精酵母，106啤酒酵母，123发面酵母。
Screening out three yeasts that can asymmetric reduce COBE to S-isomer . They are 103 alcohol yeast , 106 beer yeast , 123 flour yeast .
发面酵母