The Gram-negative,marine bacterium YK-5 with high alkaline carrageenase-producing activity had been screened and isolated from decaying plants of the sea.The strain was identified to be a kind of Flavobacterium.The results of carrageenase producing research showed that the optimal pH was 8.5,the optimal temperature was 28 ℃.Under above conditions,the highest carrageenase activity reached to 149.8 U/mL after shaking flask culture for 48 h.The primary study on enzymatic properties showed that the optimal pH a...
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