Which role is played by Lactobacillus in our stomach?

$A$ : Cheese is one of the oldest food items in which microbes are used.

$R$ : Different varieties of cheese are known by characteristic texture, flavour and taste.

Curd is formed by adding a small amount of curd to milk, which acts as a

The starter of inoculum is added to the fresh milk in order to convert milk into curd, the term starter or inoculum here refer to

Which role is played by Lactobacillus in our stomach?