Is there a solid selective media for citric acid production?

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Abdelrhman Khattab

Thanks Prof Dr Hani Antoun for your valuable help.

Michael John Dempsey

You could amend a standard bacterial medium with calcium carbonate and look for zones of clearing, where the acid dissolves the chalk. Not guaranteed that the acid is citric though!

Thanks Prof Dr Michael for your help. How Can I select the bacteria whose the ability to citric acid production on the plate?

Extract and run paper chromatography, with citric acid and other standards?