Pachysolen tannophilus was taken as the the starting strain and the ethanol yield rate as screening factor, after UV and chemistry mutagen, a stable strain Z30-4 was obtained.

• 通过对嗜单宁管囊酵母的紫外和化学诱变，以酒精产量为筛选因子，最终筛选获得一株酒精发酵高产株Z30-4。