期刊
JOURNAL OF CHROMATOGRAPHY A
卷 1045, 期 1-2, 页码 59-63出版社
ELSEVIER
DOI: 10.1016/j.chroma.2004.06.017
关键词
counter-current chromatography; Vaccinium myrtillus; anthocyanins; delphinidin-3-O-sambubioside; cyanidin-3-O-sambubioside; flavonoids
High-speed counter-current chromatography (HSCCC) was used for the separation of anthocyanins on a preparative scale from bilberry fruit crude extract (Vaccinium myrtillus, Ericaceae) with a biphasic solvent system composed of methyl tert-butyl ether-n-butanol-acetonitrile-water-trifluoroacetic acid (1:4:1:5:0.01, v/v). Each injection of 500 mg crude extract yielded 130 mg of pure delphinidin-3-O-sambubioside, and 77 mg of pure cyanidin-3-O-sambubioside. The two anthocyanin disaccharides with a glucose (2 --> 1) xylose unit are novel compounds for bilberry fruit, and were elucidated by means of electrospray ionization MS-MS, H-1, C-13, distortion less enhancement by polarization transfer NMR, and two-dimensional HC-correlation experiments (heteronuclear multiple bond correlation and heteronuclear multiple quantum correlation). (C) 2004 Elsevier B.V. All rights reserved.
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