Prevention of stagnation of foam
专利汇可以提供Prevention of stagnation of foam专利检索，专利查询，专利分析的服务。并且PURPOSE: To continue reaction stably by incorporating a surfactant in immobilized microorganism complex and releasing slowly the same during reaction.
CONSTITUTION: A carrier incorporated with a surfactant is beforehand prepd. and microorganisms are deposited thereon to make immobilized microorganism complex. The surfactant to be used in this case is more particularly preferably a nonionic surfactant, and the surfactant of which the HLB value indicating the ratio between a hydrophobic group and a hydrophilic group ranges 1W10 provides a satisfactory preventive effect against stagnation of foam. The ratio of the surfactant with respect to the immobilized microorganisms is preferably 0.01W10wt% in general. For example, polyoxyethylene alkyl ether or the like is used as the surfactant. On the other hand, for example, an ion exchange resin, agar-agar, etc. are used as the carrier. The surfactant is gradually released from the immobilized matter during the reaction using such immobilized microorganism complex, whereby the various troubles occuring in the stagnation of foam are eliminated, the growth of the microorganisms is improved and the growing power of metabolite is maintained for a long period of time.
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