Red extract and green extract are very similar in pulp, both in taste and texture, but the color difference is great, mainly because red extract contains more anthocyanins. The redder the skin, the higher the anthocyanin content. Anthocyanin is called the seventh largest nutrient of human beings, which has a good health care effect on the cardiovascular system of human beings.

2, delay aging

The content of nutrients in pericarp is the highest, and so is the red extract. In addition to anthocyanins, the contents of some active factors such as vitamins and minerals in the peel of red extract are much higher than those in grape pulp, among which vitamin C and anthocyanins have strong oxidation resistance, which can scavenge free radicals in the body and oxidize aging.

What are the disadvantages of eating red skin? 1, aggravating constipation

Red skin is rich in nutrients, but the content of crude fiber in this skin is also high. A small amount of red skin can be digested to improve gastrointestinal tract. If eaten in large quantities, it will aggravate constipation. Therefore, constipation patients should not eat too much red skin.

2, causing stomach discomfort

Red skin contains a lot of tannins like grape skin, which will stimulate taste buds and give people a astringent taste. After eating, it will stimulate the gastrointestinal tract to some extent, and it will combine with protein in other foods to form an indigestible complex. Eating too much will easily lead to abdominal distension and discomfort.

3. Excessive intake of pesticide residues

Red earth is a kind of fruit with high sugar content, which is easy to attract insects and bees when it matures. So fruit farmers will spray some pesticides to ensure its quality. Most of these pesticide residues are on the peel. Eating too much is not good for your health, especially for your liver function. Of course, if the raisins are kept clean, this problem can be eliminated.

What are the nutrients in raisin skin? 1, resveratrol.

Resveratrol contained in raisins is a natural polyphenol, and it is a chemopreventive agent for tumors, which helps to reduce platelet aggregation and prevent atherosclerosis and cardiovascular and cerebrovascular diseases.

2. Tannic acid

Tannin in raisin skin has the functions of anti-allergy, delaying aging, enhancing immunity and preventing cardiovascular and cerebrovascular diseases.

3. Anthocyanin

Anthocyanin is a natural antioxidant, which has the functions of nourishing skin, enhancing skin immunity, inhibiting bacteria and diminishing inflammation, enhancing eyesight, eliminating eye fatigue, lowering blood pressure and resisting cancer.

4. Phenol

The natural polyphenols in raisin skin can combine with protein in virus or bacteria, making it lose the ability to infect diseases, which has a good killing effect on hepatitis virus and poliovirus.

4 How to peel raisins quickly? 1. When peeling raisins, tear them upward from the bottom of the raisins and completely remove the skin. This is because the skin of raisins is divided into several layers, and the closer it is to the top, the fewer the layers are, so it can be peeled off from the bottom of the thickest cortex.

2. Put raisins in the freezer for 4 hours, take them out and put them in normal temperature water for 4-5 seconds, then peel them.

3. soak raisins in hot water, which can also make raisins easier to peel.

4. Stripping with a special stripper.