Produced | Department of Nutrition, Peking University People’s Hospital
Author | Lu Jing, Department of Nutrition, Peking University People’s Hospital
Editor | Hu Xin
Grape is a genus of berries, one of the oldest plants on earth, and one of the earliest fruit trees cultivated by mankind. As early as “Compendium of Materia Medica” and “Shen Nong’s Materia Medica”, there are descriptions and recognition of grapes, and modern people have also developed many nutrition and health products related to grapes. It can be seen that people pay more attention to the nutrition and health benefits of grapes. Increasingly.
1. Nutritional value
Each 100 grams of grapes contains 10.3 grams of carbohydrates and 0.5 grams of protein, as well as various vitamins and organic acids. The total acid content in grapes reaches 0.3-2.1%, which contains malic acid, oxalic acid and tartaric acid unique to grapes. Tartaric acid is a carboxylic acid that exists in many plants and is also one of the main organic acids in wine. The organic acids in grapes can appetite and promote digestion, as well as chelate and reduce, and promote the absorption of a variety of minerals.
2. Great effect of small grapes
People generally eat more grape pulp, but in some studies, we have found that Grape skins, grape seeds , Its nutritional value is higher than that of grape pulp, and its health effect on the human body is also stronger.
Grape skin is rich in a kind of polyhydroxy phenolic compound——— Resveratrol as well as tannins and anthocyanins , These ingredients can play an important health effect on human health. Resveratrol is a natural antioxidant that can reduce blood viscosity, inhibit platelet coagulation and relax blood vessels, and keep blood flowing. It has the effects of anti-atherosclerosis and coronary heart disease, lowering blood fat and enhancing immunity. Tannin is another important substance in grape skin. Tannin is an acidic substance, mainly derived from grape skin and grape seeds. Tannin has the functions of sun protection, whitening, anti-allergic and anti-aging.
Grape seeds are rich in Proantho Cyanidins Usually called OPC, it is an antioxidant, mainly found in the epidermis and seeds of plants. It is the key to increasing the potential of antioxidants in the body, protecting the body from oxidative damage and delaying aging. Antioxidants are substances that inhibit free radicals. These molecules can cause protein cell membranes and even DNA mutations, causing cancer and other chronic diseases. Antioxidants can scavenge free radicals, thereby preventing the occurrence of chronic diseases and cancer.
Through the above introduction, everyone has a better understanding of grapes, and it is recommended that you “eat grapes without spitting out grape skins”. More nutrients can be taken in grapes with limited consumption, and the effect of health care can be better exerted.
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