Effect of compound mutation on the oil production by yeast and its detection

The UV-induced mutation,microwave irradiation and compound mutation were ap-plied to study on yeast. The result indicated that different treatments could obtain different effects. The compound mutation could improve oil yield and ratio of oil-production more than UV-induced mutation and microwave irradiation. The strain B2 capable of producing high-yield oil could be obtained through compound mutation. The biomass,oil yield of the strain B2 could be res pectively improved 38.99% and 35.62% under the optimal conditions. A simple,quick and efficient detec-tion method of screening high-productive oil strain was founded by studying the used detection methods.