Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: CFTRI method of pulse milling eliminates use of edible oil.
Reason R: Alternate heating and tempering of pulses loosens the husk.
In light of the above statements, choose the correct answer from the options given below

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is NOT the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Hint:

The CFTRI method is a dry milling process. It replaces the traditional chemical/oil treatment with thermal conditioning (heating and tempering), making it cleaner and more economical.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Pulse milling is the process of removing the outer fibrous husk (dehusking) and splitting the cotyledons to produce dhal.
The husk of some pulses is tightly bound to the cotyledon by a gummy layer, requiring pre-milling treatments to loosen it.

Step 2: Detailed Explanation:
Let us evaluate the statements:
- Assertion A: "CFTRI method of pulse milling eliminates use of edible oil."
This is correct.
Traditional methods of pulse milling rely on applying edible oil (such as linseed or mustard oil) to the grains, followed by sun-drying, to loosen the husk. This process is time-consuming and expensive.
The Central Food Technological Research Institute (CFTRI) developed an improved thermal method that completely eliminates the use of edible oil, reducing operating costs.
- Reason R: "Alternate heating and tempering of pulses loosens the husk."
This is correct.
The CFTRI method uses controlled thermal conditioning. The pulses are exposed to hot air in a conditioning chamber and then tempered (rested) alternately.
This thermal cycle causes differential expansion and contraction between the husk and the cotyledon, breaking the bond formed by the natural gum layer.
This makes the husk brittle and easy to remove in a single pass through a dehusker.
Since this alternate heating and tempering is the exact physical mechanism that replaces the traditional oil-treatment method, Reason R is the correct explanation of Assertion A.

Step 3: Final Answer:
The correct option is (A).