Why in a E.coli fermentation process, after batch phase finishes, both pH and Dissolved oxygen shoot up?

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Martin Robert

This should be due to diauxic shift when E. coli starts consuming the acetate it produced while growing on glucose.

Devi Prasad V

As we know, oxygen is required for cellular respiration. Usually, oxygen transfer rate = oxygen uptake rate. But now, OUR decreases because it doesn't have the need to take up oxygen, as there is no glucose to metabolise. So, DO increases.

Jibin Jose

Thank u for all