Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 58, Issue 1, Pages 427-433Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf903033m
Keywords
Vaccinium uliginosum; anthocyanins; flavonols; HPLC-DAD-ESI-MS; authenticity
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The flavonoids, anthocyanins and flavonols, in bog bilberries (Vaccinium uliginosum L.) were studied from 15 populations in Finland on a south-north axis of similar to 1000 km. Four anthocyanidin xylosides and 14 flavonol glycosides were tentatively identified by means of HPLC-ESI-MS. Twenty-five major flavonoids were quantified by HPLC-DAD. The averages (+/-standard deviation) in the contents of anthocyanins and flavonols were 1425 +/- 398 and 1133 +/- 290 mg/100 g of dry weight, respectively. The most abundant anthocyanidin was malvidin, followed by delphinidin, petunidin, cyanidin, and peonidin. Quercetin was the major flavonol, followed by myricetin, laricitrin, syringetin, and isorhamnetin. Anthocyanins were mostly glucosides, whereas flavonols were mainly conjugated to galactose. The anthocyanin content in the berries from the south was the lowest. The delphinidin content was the highest but the proportion of malvidin the lowest in the north. The total flavonol content and the level of myricetin and quercetin were the highest in the north.
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