요구르트(yogurt) 제조에 이용하는 젖산은?
1
Lactobacillus bulgaricus 와 Streptococcus thermophilus
2
Lactobacillus plantarum 와 Acetobacter aceti
3
Lactobacillus bulgaricus 와 Streptococcus pyogenes
4
Lactobacillus plantarum 와 Lactobacillus homohiochi