Curdling of milk takes place by

Options

A. Streptococcus lactis
B. Streptococcus thermophilus
C. Lactobacillus lactis
D. All the above

Answer

D

Explanation

When lactobacillus lactis is added to milk the bacterium uses enzymes to produce energy from lactose. The byproduct of ATP production is lactic acid. The lactic acid curdles the milk that then separates to form curds other bacteria also used such as streptococcus, Rhizopus (fungi).