The Study of Breeding and Degradation Conditions of Oil Emissions Degrading Bacteria

Enriching, separating and selecting strains form the soil around Zhengzhou University canteen which has great degradability for cooking oil, b1, b2, b3, b4, m1, a1, among which b4 is the best. And studied the growth conditions and the degradation conditions of b4, the results showed that the optimal growing condition is as follows: carbon source (beef extract) 2.0 g/L, nitrogen source (peptone) 5.0 g/L, shaker rotation speed 150r/min; its optimal degradation condition: initial pH value 5.0, cooking oil concentration 3.0 g/L, degradation temperature 30°C, the degradation rate of oil will stabilize at above 48% after 32 h.