Do all bacteria change the pH (either acidic or alkaline) of growth media while they are grown in a batch culture?

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Trupti K Vyas

yes. All bacteria during their growth in media secrete some metabolites which alter media pH.

Gaurav Kumar

I also thinking so, but I have a doubt that whether non sugar fermenting strains will also change the pH

Consuelo Esteve

Yes, Bacteria change medium pH. Also those that grow on proteins and aminoacids since they release ammonia from peptides degradation.