Question

The main end product (metabolite) of homofermentative lactic acid bacterial cultures is ...... during milk fermentation is:

• A. Acetic acid
• B. Lactic acid
• C. Propionic acid, $CO_2$, and ethanol
• D. Lactic acid, acetic acid, propionic acid, $CO_2$, and ethanol

Hint:

Homofermentative LABs are ideal for dairy fermentation due to their efficiency in lactic acid production.

Answer 1

The Correct Option is B

Homofermentative lactic acid bacteria metabolize lactose primarily into lactic acid as the main end product. This process lowers the pH of milk, aiding in the preservation and coagulation required for products like yoghurt and cheese.