Study on Mixed Strains Culture Technology of Rice Dredgs Sauce
Abstract: : Rice dregs and wheat bran were used as raw materials. Monascus rubber, aspergillus oryzae and aspergillus niger were adopted as culture stains. The optimal stains match, inoculum size and culture time were confirmed by analyzing the changes of diastatic enzyme activity, neutral protease activity and acid protease acitvity.5% Aspergillus oryzae niger were both inoculated for two days after inoculated by Monascus rubber for four days. Then, the optimum culture pH, culture temperature, original moisture content and raw material match were obtained by orthorgonal experiment. The optinal results were: Culture temperature 31℃, ratio of rice dregs ro wheat bran 6 to 4 ,original moisture content 35%and pH 5. On these optimum conditions , the diastatic enzyme activity activity is 2321U/g dry encymic dregs, the acid protease activity is 2130U/g.dry encymic dregs and the neutral proteas activity is 2521U/g dry encymic dreg
Keywords：rice dregs; mixed culture; monascus rubber; enzyme activity analys
