acacatechin aesculin angelic acid Angelicin bitter alkaloid bitter principles bitters catechutannic acid chamazulene citral citronellol coumarin essential oil fatty oil flavinoids flavones fraxin geraniol geraniol germanium glucokinins glycosidal bitters glycoside hydroxymyristic acid iron isadol methyl-ethylacetic mucilage nicotinic acid quercitin saponins silicic acid starch steroidal glycosides sterols sugar tannins terebangelene terpenes valeric acid vitamin B Vitamin D vitamin K volatile oil