摘要
Leuconostoc spp。(LS1and LI1 ) 从泡菜和 idli 孤立击打为葡聚糖生产被选择。为了提高葡聚糖，象蔗糖集中那样的各种各样的参数的效果， pH，温度，孵化和接种物百分比的收益，被分析。为 Leuconostoc spp 的最佳蔗糖集中。(LS1 和 LI1 ) 被发现分别地是 15% 和 25% 。在 29 点在孵化的 20 h 以后孤立生产最大的葡聚糖吗？？
Leuconostoc spp. （LSland LI1） isolated from sauerkraut and idli batter was selected for dextran production. To enhance the yield of dextran, effects of various parameters such as sucrose concentration, pH, temperature, incubation and inoculum percentage were analyzed. The optimum sucrose concentration for the Leuconostoc spp. （LS1 and LI1） was found to be 15% and 25% respectively. Isolates produced maximum dextran after 20 h of incubation at 29℃ and the optimum pH was found between 8 and 8.5. The inoculum concentration of 7.5% was more favorable for the production of dextran by Leuconostoc spp. （LS1 and LI1）. The growth kinetic parameters were studied and compared for the strains LS1 and LI1. Mass production of dextran was carried out using a stirred tank batch reactor. FTIR analysis was done to determine the functional groups of dextran, sephadex is prepared by cross linking dextran using epichlorohydrin and the functional groups are determined by FTIR analysis.
