title: Major anthocyanins from purple asparagus (Asparagus officinalis).
abstract: Two major anthocyanins (A1 and A2) were isolated from peels of the spears of Asparagus officinalis cv. Purple Passion. They were purified by column, paper and high-performance liquid chromatographic separations, and their structures were elucidated by high-resolution Fourier transform ion cyclotron resonance mass spectrometry (HR-FT-ICR MS), 1H, 13C and two-dimensional NMR spectroscopic analyses and either acid or alkaline hydrolysis, respectively. A1 was identified as cyanidin 3-[3''-(O-beta-d-glucopyranosyl)-6''-(O-alpha-l-rhamnopyranosyl)-O-beta-d-glucopyranoside], whereas A2 was cyanidin 3-rutinoside, which is widely distributed in higher plants. Oxygen radical absorbance capacity (ORAC) assays proved their high antioxidant activities.
authors.affiliation: Laboratory of Horticultural Science, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-Ku, Fukuoka 812-8581, Japan. yumi_s@agr.kyushu-u.ac.jp
authors.forename: Yumi
authors.initials: Y
authors.lastname: Sakaguchi
authors.forename: Yukio
authors.initials: Y
authors.lastname: Ozaki
authors.forename: Ikuo
authors.initials: I
authors.lastname: Miyajima
authors.forename: Masaatsu
authors.initials: M
authors.lastname: Yamaguchi
authors.forename: Yuko
authors.initials: Y
authors.lastname: Fukui
authors.forename: Keiko
authors.initials: K
authors.lastname: Iwasa
authors.forename: Satoru
authors.initials: S
authors.lastname: Motoki
authors.forename: Takashi
authors.initials: T
authors.lastname: Suzuki
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Okubo
mesh_terms: D000872:Anthocyanins / Q000737:chemistry* / Q000302:isolation & purification; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification; D027761:Asparagus Plant / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D035261:Plant Components, Aerial / Q000737:chemistry
chemical_list: D000872:Anthocyanins; D000975:Antioxidants