The addition of inexpensive flavone
glycosides or aglycones and increased concentration of potentially allergenic and genotoxic ginkgolic acids are reported forms of such adulteration.
Identification of flavone
aglycones: the residue of the ether extract was dissolved in 2ml methanol at 50 C[degrees].
All of their nutritional products, SBT Single Source, SBT Flavone
Capsules & SBT Seed Oil Capsules and SBT Fruit Oil (Omega 7) Capsules, are licensed by Health Canada.
For example, a US study found no association between risk of ovarian cancer and total flavonoid intake, but it found a decreased risk linked to dietary intake of apigenin, a flavone
commonly found in celery.
The main chemical constituents of three different fractions (methanol, 80% aqueous ethanol and water) obtained from an essential oil-free infusion of extracts of Cymbopogon citratus leaves includes: Tannins, phenolic acids (caffeic and p-coumaric acid derivatives) and flavone
glycosides (apigenin and luteolin derivatives) (16).
Chemical Groups R L St Fl Volatile oils ++ +++ +++ +++ Alkaloids ++ ++ ++ ++ Flavone
aglycones + + + + Coumarins ++ +++ +++ +++ Tannins ++ ++ ++ ++ Saponins [+ or -] [+ or -] [+ or -] [+ or -] Flavone
glycosides [+ or -] ++ ++ ++ Chemical Groups F&S Volatile oils +++ Alkaloids ++ Flavone
aglycones + Coumarins +++ Tannins ++ Saponins [+ or -] Flavone
glycosides ++ (+) present, (++) present, (+++) present, ([+ or -]) Traces, (-) absent R: Roots, L : Leaves, St : Steams, Fl : Flowers, F&S: Fruits and Seeds Table 2: Essential oil composition from Ruta montana (Clus.
Extraction solutions were filtered and were analyzed in terms of total flavone
content (expressed in rutoside) and total polyphenols (as gallic acid) and antiradical capacity.
One of the 6 major subgroups of flavenoids is the subgroup of Flavone
including Flavon, Apigenin and Luteolin, which all three exist in chamomile.
1) Standardized extracts, such as EGb761 or LI1370, contain 22-27% flavone
glycosides and 5-7% terpene lactones (~3% ginkgolides and ~3% bilobalide).
radiata, which is found in tropical America and Japan, has been analysed and shown to contain active constituents including flavonoids, polyacetylenes, flavone
glycosides, chalcones, aurones and phenylpropanoids (3).
In 2005 Japanese scientists reported that iron, magnesium and calcium work together with the plant compounds anthocyanin and flavone
to produce the blue of cornflowers.
A New Flavone
Glucoside, Apigenin 7-O-glucoside 4'-acetate and a New Fern Constituent, Quercetin 3-O-rhamnoside-7-O-glucoside from Dryopteris villarii.