Fermentation is the process in which a substance breaks down into a simpler substance. Microorganisms like yeast and bacteria usually play a role in the fermentation process, creating beer, wine, bread, kimchi, yogurt and other foods. ... Grape juice becomes wine as the fermentation process is complete.

What does fermentation mean example?

Fermentation is a metabolic process in which an organism converts a carbohydrate, such as starch or a sugar, into an alcohol or an acid. For example, yeast performs fermentation to obtain energy by converting sugar into alcohol. Bacteria perform fermentation, converting carbohydrates into lactic acid.

What does ferment mean in history?

1a : a living organism (such as a yeast) that causes fermentation by virtue of its enzymes. b : enzyme. 2a : a state of unrest : agitation. b : a process of active often disorderly development the great period of creative ferment in literature— William Barrett.