endosperm

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endosperm The inner part of cereal grains; in wheat it comprises about 83% of the grain. Mainly starch, it is the source of semolina. Contains only about 10% of the vitamin B1, 35% of the vitamin B2, 40% of the niacin, and 50% of the vitamin B6 and pantothenic acid of the whole grain. See also flour, extraction rate.

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