In the paper, screening of nutritional yeast parent strains, mutation of rich riboflavin strain, shake-flashing culture conditions as well as fermentation technology of nutritional yeast were studied.
The breeding methods of fruit wine yeast nowadays cover mutation breeding, cross breeding, protoplast fusion, and genetic cloning and transformation etc.
现代育种手段进行果酒酵母的选育方法有诱变育种、杂交育种、原生质体融合、基因克隆和转化等技术。
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The yeast increased the ethanol production was screened by UV-mutation of A4 protoplast.