Cyanidin 3-O-arabinoside

Cyanidin 3-arabinoside belongs to the class of organic compounds known as anthocyanidin-3-o-glycosides. These are phenolic compounds containing one anthocyanidin moiety which is O-glycosidically linked to a carbohydrate moiety at the C3-position. Cyanidin 3-arabinoside is considered to be a practically insoluble (in water) and relatively neutral molecule. Cyanidin 3-arabinoside has been primarily detected in urine. Within the cell, cyanidin 3-arabinoside is primarily located in the cytoplasm. Outside of the human body, cyanidin 3-arabinoside can be found in a number of food items such as apple, gooseberry, black chokeberry, and redcurrant. This makes cyanidin 3-arabinoside a potential biomarker for the consumption of these food products.

Characterization of cyanidin- and quercetin-derived flavonoids and other phenolics in mature saskatoon fruits (Amelanchier alnifolia Nutt.).[Pubmed:17994693]

J Agric Food Chem. 2007 Dec 12;55(25):10414-24.

In order to further characterize the anthocyanins, flavonols, and other phenolics present in mature saskatoon ( Amelanchier alnifolia Nutt.) fruit, extracts were characterized using high-performance liquid chromatography, gas chromatography, and liquid chromatography-mass spectrometry. Cyanidin 3-O-galactoside, cyanidin 3-O-glucoside, Cyanidin 3-O-arabinoside, and cyanidin 3-O-xyloside were identified as the four major anthocyanins in the mature fruit. The quercetin-derived flavonols, quercetin 3-O-glucoside, quercetin 3-O-galactoside, quercetin 3-O-arabinoside, quercetin 3-O-xyloside, quercetin 3-O-arabinoglucoside, quercetin 3-O-robinobioside, and quercetin 3-O-rutinoside were also identified in mature fruit extracts. In addition, two chlorogenic acid isomers (hydroxycinnamates), 3-O-caffeoylquinic acid and 5-O-caffeoylquinic acid were detected. The total content of the anthocyanin-, flavonol-, and hydroxycinnamate-type phenolics detected in mature 'Smoky' saskatoon fruit was 140, 25, and 96 mg/100 g fresh weight, respectively. These data further our knowledge of the phenolic composition of mature saskatoon fruit, and as anthocyanins, flavonols, and hydroxycinnamates exhibit antioxidant activities, the presence and levels of these classes of phenolics will aid in the understanding of the potential health-beneficial effects of saskatoon fruits in the human diet.

Anthocyanins from black currants (Ribes nigrum L.).[Pubmed:12009991]

J Agric Food Chem. 2002 May 22;50(11):3228-31.

Fifteen anthocyanin structures are reported from an extract of black currant berries (Ribes nigrum L.). These are the 3-O-glucosides and the 3-O-rutinosides of pelargonidin, cyanidin, peonidin, delphinidin, petunidin, and malvidin, Cyanidin 3-O-arabinoside, and the 3-O-(6' '-p-coumaroylglucoside)s of cyanidin and delphinidin. The anthocyanins were characterized by means of size exclusion chromatography, high-performance liquid chromatography, UV-visible spectroscopy, and electrospray mass spectrometry. The four main pigments (the 3-O-glucosides and the 3-O-rutinosides of delphinidin and cyanidin) made up >97% of the total anthocyanin content. The minor pigments were enriched from the extract by successive partition against ethyl acetate and by gel fractionation. These chromatographic steps were successfully used to isolate the acylated anthocyanins from the ethyl acetate layer and to separate Cyanidin 3-O-arabinoside from the mixture of anthocyanins. The amounts of anthocyanin rutinosides were found to be higher than the amount of the corresponding glucosides for all detected pigments having the same aglycon moiety.

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