Yes. If the film is probably infected with other stray bacteria, it means that the wine has had serious contact with the air, and the wine has been contaminated with acetic acid bacteria from the air.

Homemade wine has a white film growing on its surface, which is called acetic acid bacteria. Acetobacter is a kind of harmful bacteria floating in the air. When the wine is contaminated by acetic acid bacteria, it forms a white film on the surface of the wine, which grows more and more as time goes by and seriously affects the quality of the home-brewed wine.

Expanded:

1, Nutritional effects of wine

Wine is a high-class beverage with a variety of nutrients. Moderate consumption of wine can have a direct effect on the body's nervous system and improve muscle tone. In addition, wine contains a variety of amino acids, minerals and vitamins that can be directly absorbed by the body.

2, the efficacy of the role of wine

Red wine beauty, anti-aging function from the wine content of super antioxidants, which can neutralize the body of SOD and the production of free radicals, to protect the cells and organs from oxidation, free from blemishes, wrinkles, skin relaxation, so that the skin to restore the whitening luster.

3, wine digestion

Wine contains sorbitol and tannin, which is conducive to the secretion of bile and pancreatic fluid, to enhance the gastrointestinal tract to the digestion and absorption of food.

Baidu Encyclopedia_Wine