When we eat grapes, we usually do not eat grape skins because the skin tastes bitter and bitter, and we always feel that it is unsanitary to eat fruits without peeling. However, in fact, many fruit skins have more nutrients than pulp, and it is good to eat them. Can grape skin be eaten in the end?
Can grape skin eat?
There are actually many benefits to eating grape skin. Grape skin contains a lot of vitamins and protein and other nutrients, but also contains flavonoids, polymeric procyanidins, tannins, resveratrol and other substances and a lot of natural pigments. They are very useful substances for human health, so although grape skins are bitter, they are still very beneficial to the human body.
The nutritional value of grape skin
Supplement the body needs nutrition
Grape skin is rich in fibrous substances, iron, pectin and other minerals, which can supplement the body's lack of nutrition.
Protect the skin
The tannins contained in the grape skin can prevent ultraviolet rays from damaging the skin, and can effectively protect the sun and prevent the formation of various stains.
Improve immunity
The anthocyanins contained in grape skins have antioxidant activity, anti-cancer and anti-mutagenicity, anti-radiation, prevention of cardiovascular diseases, promotion of tissue repair and skin improvement, and enhancement of body immunity.
reduce cholesterol
Grape skin contains flavonoids, which can effectively reduce the level of cholesterol in the blood and prevent atherosclerosis. The darker the grape skin, the better the effect.
improve sleeping
Grape skin has substances that stimulate melatonin secretion in the pineal gland of the brain and can help regulate sleep cycles and improve sleep.
Different color grape skins have different effects
Green grape skin
Rich in resveratrol, cellulose, and flavonoids contained in grape skins, processed foods made from grape skin residue as an additive can effectively treat diseases such as hypercholesterolemia and diabetes.
Red grape skin
Resveratrol in red grape skin has an anti-aging effect. It has an "immune effect" on obesity and can effectively reduce the incidence of diabetes, cancer and Alzheimer's disease.
Purple grape skin
Purple grape skin contains blood pressure-lowering flavonoids, which can promote the increase of high-density lipoprotein in the blood, thereby reducing harmful cholesterol levels, preventing atherosclerosis and protecting the heart.
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