Discussion
Assertion (A): Ash content is used to grade flour.
Reason (R): Bran and aleurone are far richer in mineral matter than the starchy endosperm.
Select the correct answer from the options below.
Answer: A
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason explains why the measurement works. Mineral matter is concentrated in the bran and especially the aleurone, and is low in the starchy endosperm, so the ash left after incineration is essentially a measure of how much of the outer grain has reached the flour. That makes it an objective proxy for grade, unlike colour, which depends on the observer.
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