Grapes can be juiced without removing the skin, however, they must be cleaned.

Scientific research has found that grape skins contain a chemical called resveratrol, which can prevent normal cells from becoming cancerous. And the skin of grapes also contains a component that can reduce blood pressure, with good antihypertensive and anti-atherosclerotic effect. Visible, the scientific way of eating grapes should be eaten with the skin, especially the elderly friends, often eat grapes are beneficial to health and longevity. Juice with grapes is advisable to wash the skin, and then the skin, pulp together with the juice.

Expanded:

How to juice grapes ：

1.raw material processing?

Select grapes with large color, fully ripe, no pests and diseases, wash with water, remove the fruit stalks, placed in a clean aluminum pot, crushed one by one by hand or crushed with a flat-bottomed teapot.

2. Juice production?

Put the aluminum pot with raw materials on the stove fire heating, temperature control at about 70 ℃, 5 minutes after the pot of crushed pulp poured into the gauze spread into 4 layers of filtration, and squeezed by hand to increase the rate of juice.?

3. Juice post-treatment?

To make the grape juice per kilogram add 200-300 grams of sugar, mix well, and then put on the stove, at 80-85 ℃ sterilization for 20 minutes. In the sterilization at the same time, will be used to fill the bottle of grape juice into another pot for sterilization. After the juice is sterilized, bottle it while it is still hot, tighten the cap, and then put it into 80 ℃ water for 20 minutes to sterilize it, and then take it out and cool it naturally.