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. 1994 Oct;37(3):761-7.
doi: 10.1016/s0031-9422(00)90354-6.

Betacyanins from bracts of Bougainvillea glabra

S Heuer  1 , S Richter, J W Metzger, V Wray, M Nimtz, D Strack
Affiliations

Betacyanins from bracts of Bougainvillea glabra

S Heuer et al. Phytochemistry. 1994 Oct.

Abstract

Betacyanins from the bracts of Bougainvillea glabra were isolated and characterized by a combination of spectroscopic techniques (DAD-HPLC, NMR, LC-MS, GC-MS, electrospray MS, tandem MS) as gomphrenin I (betanidin 6-O-beta-glucoside) and various derivatives of bougainvillein-v (betanidin 6-O-beta-sophoroside), i.e. mono- and diglucosylsophorosides which are acylated with 4-coumaric and caffeic acid (mono- and diesters). Besides the betacyanins, B. glabra bracts accumulated large amounts of flavonols (kaempferol and quercetin conjugates) reaching ratios of flavonol to betacyanin of 1:1.

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