Dear F.D.: Food preparation methods involving high heat can indeed destroy heat-sensitive (or “heat-labile”) nutrients, which include vitamin C and thiamin (vitamin B1). With normal cooking, this will be a reduction, not an elimination. 20 июн. 2020 г.
Does cooking potatoes destroy vitamin C?
MYTH #2. MOST COOKING METHODS DESTROY THE NUTRIENTS IN POTATOES. While boiling potatoes does cause a small loss of water-soluble nutrients like vitamin C and vitamin B6, the white potato retains most, if not all, of its potassium and dietary fiber regardless of cooking method, such as baking, boiling, or frying.
Why does cooked potato contains much less vitamin C than raw potato?
Because high temperatures destroy vitamin C, munching on your potatoes raw instead of cooked is an easy way to increase your intake of this vital vitamin. Raw potatoes are lower in calories, protein, carbs and several micronutrients. Still, they contain twice as much vitamin C as baked potatoes, gram for gram.
Why cooking lowers the amount of vitamin C in food?
Because vitamin C is water-soluble and sensitive to heat, it can leach out of vegetables when they're immersed in hot water. B vitamins are similarly heat sensitive. Up to 60% of thiamine, niacin, and other B vitamins may be lost when meat is simmered and its juices run off.
Do boiled potatoes have vitamin C?
Potatoes are a steady reliable source of vitamin C – a medium boiled potato (180 g) contains about 10 mg, which is about one eighth of the adult requirement. New potatoes contain about double this level, so a typical serving contains about a quarter of the adult requirement of vitamin C.
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