From 22 different combined bacterial systems which could convert L-sorbose to 2-keto-Lgulonic acid, a new mired bacterial dydtem H19S19 was selected.

• 从22个不同组合的发酵L山梨糖生成2－酮基－古龙酸的组合菌系中选出了最佳组合新菌系H19S19。