title: Production of Auroxanthins from Violaxanthin and 9-cis-Violaxanthin by Acidic Treatment and the Antioxidant Activities of Violaxanthin, 9-cis-Violaxanthin, and Auroxanthins.
abstract: Violaxanthin and 9-cis-violaxanthin (major epoxycarotenoids in fruit) were prepared from mango fruit, purified, and converted to other carotenoids under acidic conditions. The resulting carotenoid structures were then analyzed in detail. Not only violaxanthin but also 9-cis-violaxanthin were found to be converted to (8S,8'S)-, (8S,8'R)-, and (8R,8'R)-auroxanthin at an approximate ratio of 4:6:1. Antioxidant activities of violaxanthin, 9-cis-violaxanthin, (8S,8'S)-auroxanthin, and (8S,8'R)-auroxanthin were examined. They possessed potent lipid peroxidation inhibitory and very weak1O2quenching activities.
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Michiko
authors.initials: M
authors.lastname: Araki
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Naoko
authors.initials: N
authors.lastname: Kaku
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Momoko
authors.initials: M
authors.lastname: Harada
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Yuka
authors.initials: Y
authors.lastname: Ando
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Risa
authors.initials: R
authors.lastname: Yamaguchi
authors.affiliation: Department of Food and Nutrition, Japan Women's University , 2-8-1 Mejirodai, Bunkyo-ku, Tokyo 112-8681, Japan.
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Shindo
mesh_terms: D000143:Acids / Q000737:chemistry; D000975:Antioxidants / Q000737:chemistry*; D002338:Carotenoids / Q000737:chemistry; D005638:Fruit / Q000737:chemistry; D006868:Hydrolysis; D007536:Isomerism; D031022:Mangifera / Q000737:chemistry*; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry*; D024341:Xanthophylls / Q000737:chemistry
chemical_list: D000143:Acids; D000975:Antioxidants; D010936:Plant Extracts; D024341:Xanthophylls; D002338:Carotenoids; C005613:violaxanthin
keywords: 9-cis-violaxanthin; antioxidant activitity; auroxanthin; violaxanthin