【摘要】 对影响固定化乳酸菌发酵玉米淀粉糖化液的主要因素进行了研究,并用响应面分析法优化了固定化发酵的培养基成分.结果表明,海藻酸钠质量分数为2%,凝胶颗粒直径在1.3~1.7 mm为固定化乳酸菌的最优条件;糖化液140 g/L,玉米浆76.3 g/L,CaCO370 g/L为固定化发酵的最佳培养基组成,在此条件下乳酸产量可达132.4 g/L.更多还原

【Abstract】 The main factors influence corn starch saccharification fermentated by immobilized lactobacillus plantarum is studied and optimization of culture medium for fermentation is carried out by response surface analysis methodology(RSM).The results indicate that the optimum immobilization conditions aere as follows: sodium algite 2%,immobilized beads diameter 1.3~1.7 mm;while the optimum composition of culture medium are: saccharification 140 g/L,corn steep liquor 76.3 g/L,calcium carbonate 70 g/L,lactic acid content reachs 132.4 g/L更多还原