Practical Application of Bifidobacterium in Yoghurt

This experiment chooses Jerusalem artichoke powder as a material to promote Bifidobacterium's quantity and adopt the method of mixed fermentation-mixing Bifidobacterium with Lactobacillus bulgaricus and Streptococcus thermophilus-to produce yoghurt. The result shows that in order to promote the growth of Bifidobacterium, the best concentration of Jerusalem artichoke powder is 1.6%; while the perfect proportion of mixed bacteria (Bifidobacterium over Lactobacillus bulgaricus and Streptococcus thermophilus) is 1:1. Under these conditions, the yoghurt's flavor will be the best. The quantity of Bifidobacterium will be up to standard (that is more than 106cfu/ml), and what's more, the number of effective Bifidobacterium doesn't reduce within one day.