What happens if you put some yeast to a sweet grape juice mixture in an open pot After several days?

If you put some yeast to a sweet grape juice mixture in an open pot and leave it for several days, the following process will occur:

1. Fermentation:

The yeast, which is a type of fungus, will begin to consume the sugars in the grape juice and convert them into alcohol and carbon dioxide through a process called fermentation. The carbon dioxide produced will cause bubbles to form and rise to the surface, creating a fizzy appearance.

2. Conversion of Sugars:

As the yeast continues to ferment, the natural sugars present in the grape juice (primarily glucose and fructose) will be broken down and converted into ethanol (alcohol), glycerol, and other byproducts. This process leads to a decrease in the sweetness of the mixture.

3. Alcohol Production:

Over time, the alcohol content in the mixture will increase as more sugars are fermented. The amount of alcohol produced will depend on several factors, including the yeast strain used, the temperature, and the duration of fermentation.

4. Flavor Development:

During fermentation, various chemical reactions occur, resulting in the development of new flavors and aromas. Yeast produce esters, higher alcohols, and other compounds that contribute to the complexity and depth of the final product.

5. Potential Spoilage:

Leaving the mixture in an open pot exposes it to the environment, which can lead to contamination by other microorganisms. This may result in spoilage, altering the flavor and safety of the mixture. To prevent spoilage, it's recommended to use covered or sealed containers during fermentation.

The resulting product after several days will be a fermented grape juice or wine with an increased alcohol content compared to the original juice.