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A fragrant crystalline compound, C9H6O2, present in tonka beans and produced synthetically for use as a fragrance. Coumarin has been banned as a food additive in the United States because it can be toxic in large amounts.

[French coumarine, from coumarou, tonka bean tree, from Spanish coumarú, from Portuguese cumaru, from Tupí cumarú, commaru.]

cou′ma·ric (-mər-ĭk) adj.
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BRBs contain chemopreventive -rich composition, including anthocyanins, ellagic acid, ferulic acid, coumaric acid and quercetin, phytosterols in addition to folic acid and selenium.
DPPH (2,2-diphenyl-l-picrylhydrazyl), ABTS (2,2'-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid), Folin-Ciocalteu (FC) reagent, capsaicin, dihydrocapsaicin myricetin, catechin, resveratrol, gallic acid, coumaric acid, caffeic acid, ferulic acid, sinapic acid, and chlorogenic acid were purchased from Sigma-Aldrich (St.
The coumaric acid and the hydroxybenzoic acid potentiate the IAA oxidase system, responsible for its inactivation, causing the roots inhibition (Souza Filho & Alves, 2002).
The chlorogenic acid and coumaric acid of tomato reduces the effects of carcinogens on body that are generated due to smoking.
HPLC analysis indicated that the major polyphenols in the SFE extracts consisted of chlorogenic acid, caffeic acid, syrigin, procyanidin B2, (-)-epicatechin, cinnamic acid, coumaric acid, phlorizin and quercetin, of which procyanidin B2 had the highest content of 231.
These esters, most importantly ferulic and coumaric acid esters, can be synthesized into volatile phenols by yeast.
According to study findings, the ORAC results showed that, of the tested compounds, ferulic acid performed the best, followed by coumaric acid, propyl gallate, gallic acid and vitamin C (ascorbic acid).
Furthermore, small amounts of citric, caftaric, 2-S-glutathionyl caftaric, coutaric, and coumaric acids were also identified in all studied wines using the MS/MS data from chromatographic analysis (Fig.
melanogaster antioxidants, such as polyphenols (gallic acid, caffeic acid, ferulic acid, coumaric acid), rescue motor activity in flies exposed to 20 mM paraquat (47).
The presence of catechin, delphinidin, cyaniding, and phenolic acids such as gallic, vanillic, caffeic, coumaric and ferrulic in the seed coat of common beans have been reported [9].