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This is scientific American sixty seconds science. I am Amy Kraft. Got a minute?
Sweat potatoes contains fiber1, vitamin A and calcium2, but the way that scientists think they can make them even more healthful is literally3 shocking. Researchers found that giving a jolt4 of electricity to sweet potatoes increased the level of antioxidants known as polyphenols by sixty percent. The investigators5 placed sweet potatoes in the solution of sodium6 chloride. They found that zero point two amps direct current gave the potatoes nearly one and a half times more antioxidants than potatoes that weren't shocked. The research was presented at the national meeting of the American Chemical society.
It seems that electric zap stressed the potatoes into produce more polyphenols as protective mechanism7. And the treatment did not sacrifice flavor. Previous research has shown that electrically super charging white potatoes increases antioxidant levels. So perhaps it is only a matter of time before other fruits and vegetables get shock therapy, too.
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1 fiber | |
n.纤维,纤维质 | |
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2 calcium | |
n.钙(化学符号Ca) | |
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3 literally | |
adv.照字面意义,逐字地;确实 | |
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4 jolt | |
v.(使)摇动,(使)震动,(使)颠簸 | |
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5 investigators | |
n.调查者,审查者( investigator的名词复数 ) | |
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6 sodium | |
n.(化)钠 | |
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7 mechanism | |
n.机械装置;机构,结构 | |
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