3. In which food would you find lactic acid bacteria? Mention some of their useful applications.
Lactic acid bacteria (LAB) are found in curd. The useful applications of LAB are as follows:
1. These bacteria can convert milk into curd.
2. LAB are also found in our stomach to stop the growth of harmful bacteria.
3. LAB increases the amount of vitamin B12 in curd. Thus, it makes curd nutritious.