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对沼泽红假单胞菌B.9菌株（RhodopseudomonasPal-ustrisstrainB．9）类胡萝卜素的提取进行了研究。用超声波破碎菌体，类胡萝卜素得量较高；菌体中类胡萝卜素用丙酮提取，提取效果因菌体量、丙酿用量而变；提取波经革取、皂化。洗涤得类胡萝卡素粗制品，对其分析表明B．9菌株含有螺菌黄素系列的类胡萝卜素，
The extraction of carotenoids from RhodopseudomonasPal-ustrisstrain B.9 was studied. Ultrasonic broken bacteria, higher carotenoid yield; carotenoids in bacteria extract with acetone, the extraction effect due to the amount of bacteria, the amount of change in the amount of propylene; extracted by the wave, saponification. The carotenoid crude product was washed, its analysis showed that B. 9 strains contain serotonin series of carotenoids,