Grape seed is rich in grape seed oil, which is a good product for beauty and health care. After washing, it can be stored in the shade. You can take it out and mash it every time you need it, and add a few drops of water or ordinary edible vegetable oil as a nutrient substrate for making beauty masks.
If there are many grape seeds, you can also wash and mash them to extract grape seed oil, which can be taken orally or used externally, which is more convenient.
Brief introduction of grapes
Grape is nutritious, fresh and delicious, sweet and sour, and it is a good fruit for all ages. Grape contains essential vitamins, minerals and a small amount of protein and fat. Grape is flat, sweet and sour, and non-toxic. Traditional Chinese medicine has regarded it as a good blood tonic. Eating grapes regularly can relieve neurasthenia, relieve fatigue, nourish liver and kidney, strengthen tendons and bones, and also has curative effects on palpitation, night sweat, dry cough, scanty phlegm, backache and leg pain, weakness of muscles and bones, spleen deficiency, edema of limbs and dysuria.
Grape skin contains more cyanine than pulp, which has the functions of protecting microvessels and anti-inflammation. It is suggested that the washed hairy meat and seeds should be made into juice so that the nutrition can be completely absorbed.
Present situation of grape skin
When eating grapes, most people spit out the skin, because the skin is astringent and will lose a large part of the nutrition from the skin. Nutritionists have found that grape skin contains more resveratrol than grape meat and grape seeds. Resveratrol is a polyhydroxy phenolic compound. This substance can not only prevent cardiovascular and cerebrovascular diseases, but also has strong anti-cancer ability.
Grape skin function
Resveratrol exists in more than 70 kinds of plants for human consumption, such as peanuts, and the content in grape skin is the highest, reaching 50-100μ g/g. Researchers at Illinois College in Chicago, USA, have repeatedly tested this substance and found that it has a very high anti-cancer effect. They fed this substance to experimental mice with cancer 18 weeks, and then compared it with experimental mice with skin cancer without this substance. The results showed that the number of cancer cells in experimental mice that ate this substance decreased by 68%-98%.
Generally speaking, the occurrence of cancer can be roughly divided into three stages: first, the DNA of normal cells is damaged; Second, cell division accelerates and enters the process of canceration; Third, the tumor worsened and began to metastasize. Resveratrol has a high inhibitory effect on these three stages of cancer.
In addition, scientists from the Federal University of Rio de Janeiro, Brazil, found that grape skins, especially purple grape skins, contain a flavonoid that can lower blood pressure. Two groups of mice were fed with food rich in salt, one group was fed with grape skin and the other group was fed with grape meat. The results showed that the blood pressure of mice eating grape meat increased from 65438 0.20 mm Hg to 200 mm Hg, while the blood pressure of mice eating grape skin increased, but it did not exceed 65438 0.50 mm Hg. Flavonoids can also promote the increase of high-density lipoprotein in blood, thus reducing the content of harmful cholesterol in blood, preventing atherosclerosis and protecting the heart. Studies have shown that the darker the color of grape skin, the higher the content of flavonoids.
Grape skin is also rich in cellulose, pectin and iron, which can supplement the nutrition lacking in modern people's diet. At present, people have begun to study the use of grape skin residue as an additive to process food, so that resveratrol, cellulose, flavonoids and other rich substances contained in grape skin can be used to treat hypercholesterolemia, diabetes and other diseases. When eating grapes, we usually spit out the skin. As we all know, grape skin is a good medicine. Scientific research has found that grape skin contains a chemical called resveratrol, which can prevent normal cells from canceration and prevent skin cancer in mice, indicating that this substance has good anti-cancer and anticancer effects.
In addition, Brazilian researchers found that grape skin also contains a component that can lower blood pressure, which has good antihypertensive and anti-atherosclerosis effects. It can be seen that the scientific way to eat grapes should be to eat them with skin, especially for elderly friends. Eating grapes regularly is good for health and longevity. Wash the skin clean when eating. Some nutritionists suggest that the peel should be thoroughly washed before eating grapes, and the whole mouth and even the belt should be eaten together, so that the nutrition will reach "100%". "Eat grapes without spitting grape skins" is no longer a tongue twister, but the motto of scientific diet. Purple grape skin can also remove grass stains from the skin.
Nutritional value of grape skin
Grape skin has anti-cancer effect. Researchers at Illinois Pharmaceutical University found that this substance exists in more than 70 kinds of plants such as peanuts and grapes, especially grape skins and red wine. Anthocyanins contained in grape skin have strong anti-oxidation, anti-mutation, relieving liver dysfunction and protecting cardiovascular system. There is a substance called resveratrol in many plants. Through cell culture and skin cancer mouse simulation experiments, they found that resveratrol has carcinogenic effect and is expected to become an anticancer substance in the new century, and grape skin contains a lot of this substance. [2]
The attractive purple color of grapes actually contains a nutrient-anthocyanin. Anthocyanin is a kind of flavonoids, and it is one of the main pigments that constitute the color of petals and fruits, mainly distributed in epidermal cells and subcutaneous tissue layers. It usually exists in the tissues of grapes, purple cabbage, blueberries, eggplant skins, cherries, red oranges, strawberries, mulberries, hawthorn skins, perilla, black (red) rice and other plants.
Anthocyanin not only coats plants beautifully, but also plays an important role as a powerful antioxidant, which can protect human body from free radicals. It can enhance the elasticity of blood vessels, relax blood vessels, increase the blood circulation of the whole body, and has a certain effect of lowering blood pressure; It can strengthen the immune system and inhibit inflammation and allergies.
In addition to anthocyanins, grape skins also contain another antioxidant: resveratrol. The composition can reduce blood viscosity, inhibit platelet aggregation and vasodilation, prevent thrombosis, and prevent and treat coronary heart disease, ischemic heart disease and hyperlipidemia. It can also prevent tumor formation, has estrogen-like effect, and can be used to treat diseases such as breast cancer.
A magazine published a Harvard research report, pointing out that resveratrol may be the key to the development of anti-aging drugs and anticancer drugs. A university study also confirmed that resveratrol can fight HIV.
Italian scientists fed a small fish native to Zimbabwe with different doses of resveratrol. The results showed that low dose of resveratrol did not change the life span of fish, middle dose of resveratrol prolonged the life span of fish by one third, while high dose of resveratrol prolonged the life span of fish by more than 50%. Other studies have also found that resveratrol can significantly prolong the life span of lower organisms. Resveratrol plays an anti-aging role mainly by protecting DNA in cell mitochondria from damage, and we have reason to expect it to play the same role in humans.