Question

The oil can be mixed with whole pulses in the following type of mixer:

• A. Tumbling mixer
• B. Ribbon type of mixer
• C. Sigma blade mixer
• D. Planetary mixer

Hint:

In the Dal milling industry, Ribbon blenders are the industry standard for applying the oil pre-treatment required to loosen the husk of pulses.

Answer 1

The Correct Option is B

Coating whole pulses evenly with a small amount of oil without crushing the grains needs a gentle but thorough mixing action. A ribbon mixer, with its U shaped trough and twin helical blades moving material in opposite directions, spreads a thin film of oil across a large surface area of solids while treating the pulses gently enough not to break them. Sigma blade mixers are built for thick pastes like dough and would crush the pulses, and tumbling mixers work better with dry powders than with liquid coating.