Caffeine from Tea leaves , extraction

Hello friends , in this video we will be extracting caffeine from tea leaves which I plucked from a tea plantation.
Dichloromethane is used as a solvent here. You can instead use chloroform also.
This video is made for academic purpose for students and researchers.
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[@lawjye4169]

Wow, reminds me of O-chem lab….DCM was a go to.

[@chanheosican6636]

Hmm, nice tea plantation and it is a fairly easy project if you have the chemicals to extract caffeine from tea.

[@joemonsujo4955]

Wow nice video

[@jizmoglass4202]

Can I use this method with Chinese Tea? (Ma-Hoang, sinica)? Thank you. Great videos.

[@WaffleStaffel]

I used to love coffee, but at some point I began tasting the caffeine. I can taste it in coffee, soda, anything. It's a distinct bitter component.

[@foc2241]

@@vibzzlab I also drink a lot of tee and coffee xD

[@foc2241]

BTW when boiling you loose some caffeine as it degrades

[@maxwillacy-kuhn6396]

Same process with coffee?

[@experimental_chemistry]

Very nice. What about detecting the coffein with the murexid test? DCM is probably carcinogenic. Can it be replaced by other, less harmful solvents?

[@user-uf8gu9ne1g]

@@experimental_chemistry Ethyl acetate might work for extraction, but i'm not sure if it would yield pure caffeine

[@experimental_chemistry]

@@user-uf8gu9ne1g Maybe it can be purified afterwards by (re-)sublimation.

[@experimental_chemistry]

@@user-uf8gu9ne1g EAc will be a problem when shaking out the coffein from the sodium carbonate containing aqueous extract, because EAc will hydrolyse in the alkaline environment. But maybe it works with some concentrated/boiled down coffee or tea.

[@user-uf8gu9ne1g]

@@experimental_chemistry I think if it's not too hot, ester won't be too labile, which means ester won't be hydrolysed too much too quickly. Little loss of EA can be ignored as long as the ester is used in excess.