The ratio of Lactobacillus bulgaricus and Streptococcus thermophillus is 1:1. The optimum formula of the expanded fermentation is: tomato and carrot juice 3:7, glucose 2%, NFM 4%, and vaccination 3%.

• 用保加利亚乳杆菌和嗜热链球菌按1:1比例作为菌种; 种子扩大液的最佳配方:番茄、胡萝卜混合汁配比3:7,2%25葡萄糖,2%25脱脂乳,3%25接种量;