Fraxin is a glucoside of fraxetin.[1] Fraxin extracted from ash bark exhibits florescence in aqueous solution.[2] A blue/green luminescence can be observed by soaking ash twigs in hot water.

Bibliography

  1. ^ Hirsch, Anne-Marie; Longeon, Arlette; Guyot, Michèle (January 2002). "Fraxin and esculin: two coumarins specific to Actinidia chinensis and A. deliciosa (kiwifruit)". Biochemical Systematics and Ecology. 30 (1): 55–60. doi:10.1016/S0305-1978(01)00064-3.
  2. ^ Meikle, R. D. (1958). British Trees and Shrubs (Kew Series) (1st ed.). UK: Eyre & Spottiswoode. pp. 129–132.