What can we do to characterize the polyphenols in a plant which we don't know exactly the classes of these polyphenols?

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Aly R Abdel-Moemin

I did not get your question clearly. However If you gonna to analyze plants in terms of the most important flavonodis based HPLC please see my attachments. If you gonna to measure the total of phenols there several standards to use gallic acid is one of them. Other chapters of my thesis are available on my account.

Good luck

Eshak Mourad El-Hadidy

polyhenols depend on plant families

tea, coffee (Catechin standard)

famous standard (gallic, vanillic, tannic, catechin)

Merieme LEDRHEM

Thank you all so much.

Catherine M G C Renard

LC-MS!