What antinutrient found in whole corn can bind to dietary minerals like iron and zinc, slightly impairing their absorption in the same meal?
Answer
Phytic acid
Phytic acid, also known as phytate, is naturally present in whole grains and legumes, including whole corn kernels. Its structure allows it to chelate, or bind, to essential divalent mineral cations such as iron and zinc within the digestive tract. This binding action prevents the body from fully absorbing these necessary minerals during that specific meal. While soaking, sprouting, or fermenting can reduce phytic acid levels and increase mineral bioavailability, the compound itself is not inherently dangerous when consumed moderately as part of a varied diet.
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