结果表明:冷冻干燥法保藏菌种时间最长(本实验室已保存15年);肉浸汤琼脂平板法保藏菌种时间最短(2~3月)。
The results indicated: freeze-drying method could do the longest preservation (at least 15 years) while beef broth agar plate method did the shortest (only 2 to 3 months).
平板计数法比较冷冻干前后的活菌数,计算存活率。
The number of viable cells was compared with the plate count before and after lyophilization to calculate the survival rate.
平板计数法比较冷冻干前后的活菌数,计算存活率。
The number of viable cells was compared with the plate count before and after lyophilization to calculate the survival rate.
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