Sweetening of potato tubers caused due to

A. Poorly ventilated storage condition

B. Tuber maturing in warm sandy soil

C. Long term tuber storage at 0° - 50°C

D. Excess irrigation and fertilization in potato field

Answer: Option C

Solution(By Examveda Team)

The sweetening of potato tubers caused due to Long term tuber storage at 0° - 50°C.
Sweetening is the accumulation of reducing sugars in potato tubers at low storage temperatures. Thus, it is also known as Cold-induced Sweetening (CIS).
The relationship between genetic resistance to CIS and two starch parameters, amylose content and starch granule size.
It is undesirable because it results in dark fry products.