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The amino groups of wheat β-amylase (WBA) were modified by 2,4,6-trinitrobenzenesulfonic acid (TNBS), 2,4-bis (O-methoxypolyethylene glycol)-6-chloro-s-triazine (mPEG), and glutaraldehyde (GA) to improve its thermal stability and activity. Modification of WBA by 5mM TNBS, 4.8μM mPEG and 11mM GA improved its T 50 (the temperature at which 50% of its activity is lost after 30min of incubation)...
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