The effect of PEG and other polyols additives on cyclodextrins (CDs) production by Bacillus mucerans cyclomaltodextrin-glycosyl-transferase (CGTase) was investigated. Mannitol, glycerol and PEG-200 (2O%.v/v) enhanced the enzymatic production yield regardless of substrate concentration. Furthermore, the PEG-200 addition increased the thermostability of the CGTase.
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