What is the pH of Saccharomyces cerevisiae?

Answer 1

Yeast grows best in a neutral to slightly acidic environment. The pH inside a yeast cell is held relatively constant at around 5.5 and as long as this can be maintained the external pH doesn't matter too much.

The ideal pH for fermentation is probably closer to 4.0. Not because of yeast's preferences but because bacterial growth is seriously inhibited at this pH.

Answer 2

Saccharomyces is a yeast and it isn't normally described in terms of it's pH. That said, yeast's cytoplasm is normally maintained at a pH between 5.5 and 5.75. Yeast prefers to live in a mildly acid environment and yeast growth produces a range of organic acids which lowers the pH of it's environment.

Answer 3

Saccharomyces cerevisiae is a type of yeast commonly used in brewing and baking. Its internal pH is usually around 5-6, which is slightly acidic.

Answer 4

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