Source Pravda.Ru

U.S. scientists discover why some popcorn kernels don't pop

Eat your way to the bottom of almost any bag of popcorn and there they are: the rock-hard, jaw-rattling unpopped kernels.

The nuisance kernels have kept many a dentist busy, but their days could be numbered: Scientists say they now know why some popcorn kernels resist popping into puffy white globes.

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.

"They're sort of like little pressure vessels that explode when the pressure reaches a certain point," said Bruce Hamaker, a Purdue professor of food chemistry. "But if too much moisture escapes, it loses its ability to pop and just sits there."

He and his associates compared the microwave popping performance of 14 popcorn varieties grown in the state of Indiana and examined the crystalline structure of the translucent hulls of both the popped kernels and the duds.

In the varieties popped, the percentage of unpopped kernels ranged from 4 percent in premium brands to 47 percent in the cheaper ones.

Hamaker said two popcorn manufacturers have already expressed interest in Purdue's findings.

The research, funded by Purdue's Whistler Center for Carbohydrate Research, which Hamaker directs, has been published online and will appear in the July 11 edition of the journal BioMacromolecules.

RICK CALLAHAN, Associated Press Writer

Years of diplomatic conflict resolution efforts in Syria produced no breakthroughs. Washington and its imperial partners want endless war and regime change, not peace.

Russian Foreign Ministry on Syria, Ukraine and Britain

The British public made a mistake two years ago, easily led by a campaign of false promises and lies. Today REMAIN would win 60%-40% at the very least.

We, the People of Britain, do not want Brexit

Years of diplomatic conflict resolution efforts in Syria produced no breakthroughs. Washington and its imperial partners want endless war and regime change, not peace.

Russian Foreign Ministry on Syria, Ukraine and Britain
Comments
L'Antidiplomatico Interview: Andre Vltchek interviewed by Alessandro Bianchi
Russia warns Ukraine and its Western sponsors
Russia warns Ukraine and its Western sponsors
Fascist Ukraine Backed by US-Led NATO Might
We, the People of Britain, do not want Brexit
Pompeo Lied About Iran's Legitimate Ballistic Missile Program
Fascist Ukraine Backed by US-Led NATO Might
Fascist Ukraine Backed by US-Led NATO Might
We, the People of Britain, do not want Brexit
We, the People of Britain, do not want Brexit
Macron Regime at War on Social Justice
Russia close to recognising Donetsk and Luhansk republics after Donbass elections
Pentagon's goal in the Middle East is to trigger major war between Israel and Iran
Pentagon's goal in the Middle East is to trigger major war between Israel and Iran
War in Yemen to explode Persian Gulf and oil market
War in Yemen to explode Persian Gulf and oil market
War in Yemen to explode Persian Gulf and oil market
War in Yemen to explode Persian Gulf and oil market
We, the People of Britain, do not want Brexit
Thank you Colin Kaepernick
The Documented Ancient Construction Method of The Great Pyramid