Initially,Lactobacillus plantarum was incubated in MRS agar medium.Subsequently,a single-factor test was per-formed to examine the effects of three drying protectants(sodium glutamate,skimmed milk,and sucrose)on strain survival rate.The drying protectants'optimal proportions were determined using response surface method before being applied to the probiotic powder preparation for subsequent survival rate determination.As illustrated by the test results,the optimal propor-tions for three drying protectants were 6％for sodium glutamate,15％for skimmed milk,and 10％for sucrose.The post-drying Lactobacillus plantarum powder had a survival rate of 89％.
维普
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