益生素酵母菌的制备工艺研究

Research on the product processing of probiotics yeast

试验研究了规模化制备益生素酵母的发酵和干燥工艺条件。试验结果表明:培养温度30℃,通气量1.3Nm3/h,培养时间28h可以获得对干燥抵抗性较小酵母。5000r/min离心10min收集菌体,添加15%的保护剂,干燥温度40～45℃,可以获得活菌为88.6%的活性酵母菌粉。

In order to prompt probiotics to be utilized in feed industry, the process condition about the active yeast was studied in this paper. The result indicated that the amount of cell reached higher value in following conditions： cultivating temperature 30℃, gas fluid Velocity 1.3 Nm^3/h and fermenting times 28 h. As well as, probiotics yeast about 88.6% living cell rate was obtained in the following condition： the optimum concentration condition was 5 000 r/min, 10 min, drying temperature 40-45℃,addition level of protector as 15%.