关键词: 红假单胞菌, 类胡萝卜素, 发酵

Abstract: A strain of Rhodopseudomonas sp. R-41, which contains high content of carotenoids was experimented by many factors. The optimum conditions under which the yield of carotenoids is relatively high were found out. Under the conditions of acetate as carbon source, sodium glutamate as nitrogen source, yeast extracts as growth factors, and Mg(2+) 4 mg/L, Fe(3+), 2 mp/L, 1500 lx and incubation in 30℃, micro-acerbic for 120 hours. the yield of carotenoids increase from 23. 8 mg/g drycell to 57. 3 mp/g drycell.

Key words: Rhodopseudomonas sp Carotenoids Fermentation