Immobilization of microbial cells containing NAD‐kinase

Abstract

Abstract Microbial cells having NAD‐kinase activity, Brevibacterium ammoniagenes , were immobilized by the radiation‐copolymerization method under low temperature with the activity recovery of more than 80%. Compared to the native microbial cells the immobilized cells were more stable against heat and pH change. The immobilized cells were subjected to the 5 hr reaction repeatedly 20 times without any activity loss.

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