#coumarin — Public Fediverse posts

I only use Ceylon #cinnamon (C. verum) because I try to avoid #coumarin, which is poisonous. (You should, too.) In order to authenticate the cinnamon I buy, I am experimenting with ways to detect coumarin at home. This sample is C. burmannii and the fluorescence you see here should be coumarin. In addition, my C. cassia and an el cheapo cinnamon of unknown type (I presume cassia) showed this. My two C. verum samples had nothing.
My attempt was to get the coumarin out with methanol (or I guess you can use cheap moonshine), and drip it on NaOH (drain opener) soaked #Aeropress filters, then dry and illuminate with UV. Am I right here? Anyone? #homelab #chemistry