Yeast play an important role in fermentation industry, but some could cause unpleasantodour or form white pellicle in Soy sauce.

• 摘要酵母菌在发酵工业有重要作用，但是有些酵母却是酿造工业中的杂菌，使成品酱油产生不愉快的臭气或形成白膜。