Thursday, April 21, 2005

Mystery of Unpopped Popcorn Is Discovered

It's long been known that popcorn kernels must have a precise moisture level in their starchy center — about 15 percent — to explode. But Purdue University researchers found the key to a kernel's explosive success lies in the composition of its hull.
It turns out there is an optimal hull structure that allows kernels to explode, and leaky hulls prevent the moisture pressure buildup needed for kernels to pop.

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