1: With beta-hydroxyethylmercaptan; Tris-HCl buffer; Chitopearl immobilized glutamate racemase in water T=40°C; Racemization; pH=8; 2: With beta-hydroxyethylmercaptan; Tris-HCl buffer; Chitopearl immobilized L-glutamate oxidase in water T=40°C; Oxidation; pH=8;