Image: Yeast fermentation

Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 4,160 × 3,120 pixels.

Original image ‎(4,160 × 3,120 pixels, file size: 2.69 MB, MIME type: image/jpeg)

Description: Fermentation of sucrose by yeast. When dried yeast is hydrated in warm water in presence of sucrose (sugar), it produces acid, alcohol and other organic molecules. During the initial period of growth of the yeast, the dissolved oxygen is depleted rapidly with the evolution of carbon-dioxide (observable as bubbles). The respiration then shifts to anaerobic mode, resulting in formation of ethanol as well as organic acids. The picture shows formation of acid by yeast after 10 minutes of incubation in warm water in presence of sucrose. Bromothymol blue indicator turns yellow in presence of acid.
Title: Yeast fermentation
Credit: Own work
Author: JOY EL Science Club
Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes

Image usage

The following page links to this image:

Ethanol fermentation

All content from Kiddle encyclopedia articles (including the article images and facts) can be freely used under Attribution-ShareAlike license, unless stated otherwise.