The efficacy and role of grape juice
Grape juice is known to scientists as ? Plant milk? A study says that grapes are the best food for patients with nephritis, hepatitis, arthritis and anemia, as well as fighting cancer and lung disease. Professor Kamal, a food expert, said that grapes are medically important, mainly because they contain many nutrients and substances that are beneficial to the body. Medical studies have proved that grape juice is the best food for patients with nephritis, reducing albumin and sodium chloride in the kidneys. Meanwhile, grape juice also contains a large amount of easily digested and absorbed sugar, with a carbohydrate content of up to 16%, most of which is glucose. Grapes also contain 0.5% plant fiber as well as potassium chloride, iron and phosphorus. These substances help to balance blood acids and are essential for body building, especially bone and nerve building. Also, grapes contain organic acids that promote digestion.
Nutritional value of grape juice
One of the antioxidants polyphenols in purple grape juice is the most abundant and active. This must be overlooked, many people love to eat grapes, but do not know that grapes have a special effect, there can be scavenging free radicals, alleviate the effects of aging. This is closely followed by apple juice and sour fruit juice, while orange juice has the least amount of polyphenols. Purple grape juice is higher in antioxidants and has more health benefits than other juices.
Free radicals about many people must not be rusty, in recent years, health care products, cosmetics, free radicals, the word presented more and more often, free radicals are harmful compounds occurring in the oxidation reaction of the body, with strong oxidizing, can damage the body's arrangements and cells, which can lead to slow disease and aging effect. Oxygen free radicals (also known as free radicals) (also known as free radicals) are associated with most diseases and the aging of the human body. The so-called? Oxygen free radicals and free radicals free radicals That is, when the body is metabolized by the human body waste.
Therefore, if you want to antioxidant, delay the aging, we should start from the beginning of their own lives, less smoking, as little as possible to take unnecessary drugs, drink more clean water. Eat more fresh fruits and vegetables or often mixed drinking a variety of fruit juices such as purple grape juice, apple juice, sour fruit juice, etc., which is more conducive to good health.
The practice of grape juice
Main ingredients grapes, sugar
Practice:
1, wash the grapes to remove the stems, with a clean gauze wrapped tightly after squeezing the juice.
2, grape juice in the amount of boiling water to mix.
3, you can add a little sugar flavor.
Preservation of grape juice
High sulfur method
First of all, the use of saponite for protein stabilization, clarification of the grape juice, the PH value adjusted to 2.7, and then add a certain amount of SO2., so that its concentration is controlled at one thousand to two thousand mg / L. Then stored in stainless steel containers.
Filtration
After all the containers used in the filtration process have been effectively sterilized, filtration is carried out to obtain a high quality must. This method may cause contamination of the yeasts, which can be detrimental to future fermentations, and is better preserved at low temperatures.
Low PH preservation method
The preservation method is mainly used to inhibit the growth of yeast in the grape juice. Specifically, you need to control the PH value between 2.2-2.4, and need to add SO2, and finally stored in steel tanks. Later after deacidification you can continue to ferment and make wine.
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