DictionaryfermentationMicrobial breakdown
noun

fermentation

fer-men-TAY-shn/ˌfɜːrmenˈteɪʃn/

The breakdown of organic substances through microbial activity.

Bubbles rise through the cloudy cider as fermentation produces gas.

A large glass vessel of cloudy golden apple cider actively fermenting, fine bubbles and a little foam at surface, a simple water airlock releasing a bubble at top, apples in a shallow bowl beside it.
Etymology

The pieces name the process of fermenting or leavening. Once used broadly in alchemy, fermentation acquired the more specific scientific sense of microorganisms converting sugars into alcohol or acids.

In context

Hospitality Broadcast2:45
After crushing and pressing, the juice is put into a tank, and we go for fermentation. In fermentation, the yeast breaks down the sugar which is present in grape juice into alcohol and carbon dioxide.
Champagne making process // champagne vs sparkling wine // How to make sparkling wine //

More examples

  • Yeast breaks down sugars during fermentation, helping bread dough rise.
  • Bacterial fermentation gives yogurt its tangy flavor.
  • Cooler temperatures slow the fermentation of the cabbage.

Forms

ferment verb — To undergo or cause breakdown through microbial activity.

Similar words

decomposition
Covers broader decay, not just breakdown caused by microorganisms.
breakdown
Includes substances coming apart through microbial or nonmicrobial processes.