Question

Which of the following is/are used in dal milling industry?

• A. Water
• B. Oil
• C. Red earth, oil, water
• D. Black earth

Hint:

The use of red earth is a characteristic of the "traditional dry milling" method commonly practiced in India to ensure uniform drying and better husk removal.

Answer 1

The Correct Option is C

Concept: Traditional and commercial dal milling often requires "pre-treatment" to loosen the strong bond between the husk and the cotyledon.

• Hydro-thermal treatments (water) are used to hydrate the husk.

• Oils are used as lubricants to facilitate easier hull removal.

• Soils are used as abrasive agents or for sun-drying assistance.

Step 1: Understanding the role of Water and Oil.
Water is used to soak the pulse, making the husk brittle upon subsequent drying. Oil (usually vegetable oil) is applied to penetrate the husk and loosen it.

Step 2: The role of Red Earth.
In traditional dal milling, "Red earth" (Lal mitti) is mixed with pulses. It provides a rough surface that creates micro-scratches on the husk, allowing moisture and oil to penetrate faster.

Step 3: Conclusion.
Since all three components are essential parts of the various milling methods (Dry and Wet): Option (C) is the most complete and correct answer. Final Answer: (C)