title: The unique occurrence of the flavone aglycone tricetin in Myrtaceae pollen.
abstract: In pollen, flavonoids are usually found as glycosides and in particular, flavonol 3-O-diglycosides. However, in members of the Myrtaceae, subfamily Leptospermoideae, the rare flavone aglycone tricetin, along with other flavonoid aglycones including 3-O-methyl quercetin and luteolin, have been found to comprise a significant portion of the constituent flavonoids.
authors.affiliation: Laboratory of Pharmacognosy-Faculty of Pharmacy, University of Coimbra, Portugal. mgcampos@ff.uc.pt
authors.forename: Maria G
authors.initials: MG
authors.lastname: Campos
authors.forename: Rosemary F
authors.initials: RF
authors.lastname: Webby
authors.forename: Kenneth R
authors.initials: KR
authors.lastname: Markham
mesh_terms: D000818:Animals; D001516:Bees; D002867:Chromones / Q000032:analysis*; D005052:Eucalyptus / Q000737:chemistry; D005419:Flavonoids / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification; D047311:Luteolin; D027822:Myrtaceae / Q000737:chemistry*; D011058:Pollen / Q000737:chemistry*; D011794:Quercetin / Q000032:analysis; D013045:Species Specificity
chemical_list: D002867:Chromones; D005419:Flavonoids; C469689:tricetin; C040015:myricetin; D011794:Quercetin; D047311:Luteolin