Fig. 2A: Fermentation of a Carbohydrate:
Acid End Products with no Gas
Acid end products from carbohydrate fermentation turn the pH indicator phenol
red from red (alkaline) to yellow (acid). No gas was produced.
Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: September, 2017