The purpose of adding sugar to homebrew wine is for better and faster fermentation.

Wine fermentation is a process in which microorganisms consume the sugar in the grape juice to secrete alcohol, winemaking grapes generally contain 13-15 grams of sugar per 100 grams of sugar, according to experience, each gram of sugar can produce 0.6 degrees of alcohol after fermentation, relying on the sugar of the grapes themselves can only produce 8-9 degrees of wine, to produce 12-15 degrees of wine, obviously need to add sugar.

The wine itself is very good for the human body, even with diabetes patients can drink, but if too much sugar is added, it will cause some harm to the human body.

Expanded Information:

It is not advisable to drink your own wine:

1. The conditions for making your own wine are simple, and hygiene cannot be guaranteed

Because grapes are not easy to keep at room temperature, and without refrigeration they will easily harbor bacteria and produce spoilage. The container may produce a harmful chemical composition in the process of brewing, and the process of brewing by yourself is not regulated by the whole closed sterilization production, so brewing your own wine may occur E. coli exceeds the standard, which will easily lead to the human body's gastrointestinal discomforts.

And the home-brewed wine should be drunk in a month's time, but for normal winery brewing wine, white wine needs three to four months of fermentation time, and red wine needs one to two years of fermentation time. In general, there are also strict requirements for the temperature of fermentation, which should not exceed 20 degrees. Therefore, making your own wine at home. Male ensure that the time and temperature of the wine is just right.

2, make your own wine technology is not pass, health is not very good to ensure

Because most of the wineries produce wine will avoid less sugar or sugar. But home-brewed wines choose to add a little more sugar in order to ferment better and faster. Wine itself is very good for the human body and can be drunk even by people with diabetes, but if too much sugar is added, it can be harmful to the human body.

3, the quality of wine can not be guaranteed

The quality of winemaking stems from the quality of the grapes, but when homemade wine, people use raw materials are usually ordinary table grapes, the quality of which can not be guaranteed, in the home brewing of wine, not in accordance with the strict standards of the brewing of wine step by step, and at the same time do not have a professional fermentation environment and disinfection conditions and so on. Home-brewed wine in such an environment may pose certain safety hazards and cause certain harm to the human body.

Baidu Encyclopedia - Homemade Wine

People's Daily Online - Can you drink wine made from your own grapes? A comprehensive analysis of five aspects