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Why do popcorns become soft after popping?

Jun 26, 2015 11:02 IST

    Q. Why do popcorns become soft after popping?

    Ans. Each kernel of popcorn contains soft starch along with some water surrounded by a hard layer of endosperm, which is a food storage tissue. When the popcorn is heated, the water in the endosperm turns into steam and start building the pressure inside the kernel. When the pressure gets high enough, the kernel explodes and turns inside out. The starch inside the kernel becomes soft like gelatin and puffs out making the hard, inedible kernel to a fluffy, edible snack.

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