Posted by Rachel | Posted in Gourmet Coffee | Posted on 04-05-2009
Tags: coffee, coffee from cat, coffee from colombia, coffee from costa rica, coffee from ethiopia, coffee from guatemala, from, photography, photos, video
how would dichloromethane affect the extraction of caffeine from coffee?
Tea has very few components, other than caffeine, that dissolve in dichloromethane. Coffee contains a number of volatile, oily compounds. How would the dichloromethane affect the extraction of caffeine from coffee, if we used the same procedure (adding dichloromethane, centrifuging, removing the base layer and then setting up a filtration after repeating the addition and removal steps 4 times) we used to extract caffeine from coffee that we used to extract caffeine from tea?
I’m not sure what you are asking. I cant see anything wrong with your reasoning, so yes, you could probably use the same procedure.
DCM would still extract the caffeine, your oily compounds are most likely terpenes of one sort or another and non-polar, so have a poor affinity for the DCM.
I believe DCM was used as solvent for decaff coffee in the distant past, However, these days they use CO2 gas as the solvent.
Sorry that I can do little more than just agree with you.
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