Question

what is winnowing? why it is important? what is primary processing of food grains and its importance?

Answer 1

Winnowing is the process of separating lighter components of a mixture from the heavier ones by using wind or moving air is known as winnowing.
Primary processing: Purification of raw materials by removing foreign matter, immature grain and then making the raw material eligible for processing by grading in different lots or conversion of raw material into the form suitable for secondary processing.
It adds value and quality to the processed food grains.