How do I remove alcohol-soluble sorghum proteins from alcohol pigment extract?

29 May 2019 1 9K Report

I have a methanol extract of 3-deoxyanthocyanins (not water-soluble) from sorghum and I need to remove the alcohol-soluble proteins from this extract. What would be the best way to do this?

Solubility is reduced with lower temperatures and I do see precipitation of protein when I freeze the extracts (-20C).

Tadesse Fikre Teferra

Using some precipitation agent that selectively reacts with the proteins, but not with the 3DAX may be one way.

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