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n.1.(Chem.) A colorless crystalline substance (C16H18O10) found in the bark of the ash (Fraxinus), and along with esculin in the bark of the horse-chestnut. It is structurally a derivative of a coumarin glucoside. It shows a delicate blue-green fluorescence in alkaline solutions; - called also paviin and fraxoside.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Bu konuda yapilan calismalarda at kestanesi ozunde yer alan aescinin suda cozunurluk ve erime noktasina gore birbirinden ayirt edilen alfa ve beta olmak uzere 2 form triterpene saponin karisimindan olustugu; bunun disindaki bilesenlerin ise bioflavonoidler (quercetinve kaempferol),proanthocyanidin A2 (bir antioksidan) ve coumarinler (fraxin ve aesculin) oldugu gosterilmistir.
In addition, the coumarin glycoside fraxin displayed free-radical scavenging effect and cell protective effect against hydrogen peroxide-mediated oxidative stress [12, 13].
Ham, "Natural compounds, fraxin and chemicals structurally related to fraxin protect cells from oxidative stress," Experimental & Molecular Medicine, vol.
Some of the coumarins, such as aesculetin, aesculin, and fraxin, also possess antioxidant activity.
Esculetin, esculin, fraxin, and fraxetin are some of the pharmacologically active components isolated from different species of Fraxinus plant (Figure 2).
2013), the occurrence of cumarins content in Glucevia[R], including fraxin, fraxetin, esculin, esculetin, cichoriin, scopolin and fraxidin glucoside was quantified.
Cyclo AMP phosphodiesterase is inhibited and an anti-oxidative (radical trapping action) effect was proven for scopoletine, isofraxin and fraxin.
For example salicin is found in Salix spp, Populus spp, Viola spp, and Viburnum spp; fraxin is found in Fraxinus spp; and both spiraein and salicylaldehyde are found in Filipendula spp.
The main active principles of the anti-exudative effect and improvement of venous tone are hydroxycoumarins (aesculin and fraxin), triterpene saponins in the petioles and leaf veins, flavonoids and a rich supply of tannins.
S2 has a high content of rutin and S3 a high content of fraxin. Each of the single extracts modulated a different number of genes based on the microarray assessment: S1 modulated 51 genes, S2 24 genes and S3 31 genes.