I want to extract betalain pigment from different parts of amaranthus plant. Does anyone have standard protocol for extraction?

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Jack Silver

One possibility is an ion exchange column that interacts with the carboxylic acids.

The isolation would be something like those described here: http://www.isco.com/WebProductFiles/Applications/101/Application_Notes/AN87_RediSep%20Rf_SAX_Column_Applications.pdf

Andrea Mosquëra

Dear Jack Silver, do you have some paper like that, but

instead of "Exchange Column" it include information about silice C18.

Thank you for your attention.