Which among the following microbes is used in the production of curd from milk?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → Lactobacillus.
Curd is made from milk by Lactobacillus and similar lactic acid bacteria (LAB). A little curd added to fresh milk works as a starter, because it already holds millions of LAB. Curd also has more vitamin B12 than milk.
NCERT Extract:
Microbes in Household Products – “You would be surprised to know that we use microbes or products derived from them everyday. A common example is the production of curd from milk. Micro-organisms such as Lactobacillus and others commonly called lactic acid bacteria (LAB) grow in milk and convert it to curd. During growth, the LAB produce acids that coagulate and partially digest the milk proteins.”