Free Radical Mediated Oxidative Degradation of Carotenes and Xanthophylls

被引：65

作者：

Mordi, Raphael C. ^{[1
]}

Ademosun, Olabisi T. ^{[2
]}

Ajanaku, Christiana O. ^{[2
]}

Olanrewaju, Ifedolapo O. ^{[2
]}

Walton, John C. ^{[3
]}

机构：

[1] Chrisland Univ, Dept Chem, Ajebo Rd, Abeokuta 110222, Ogun State, Nigeria

[2] Covenant Univ, Dept Chem, Km 10,Idiroko Rd, Ota 112242, Ogun State, Nigeria

[3] Univ St Andrews, EaStCHEM Sch Chem, St Andrews KY16 9ST, Fife, Scotland

来源：

MOLECULES | 2020年 / 25卷 / 05期

关键词：

free radicals; carotenoids; xanthophylls; oxidation; beta-carotene; canthaxanthin; beta-ionone; retinal; apo-carotenoids; BETA-CAROTENE; SINGLET OXYGEN; VITAMIN-A; QUENCHING MECHANISMS; LYCOPENE; PROTECTION; CONVERSION; PRODUCTS; CLEAVAGE; CANCER;

D O I：

10.3390/molecules25051038

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

This article reviews the excited-state quenching, pro-vitamin A activity and anticarcinogenicity of carotenes and xanthophylls in relation to their chemical structures. Excited-state quenching improved with the length of the conjugated chain structure. Pro-vitamin A activity was dependent on the presence of at least one beta-ionyl ring structure. The effectiveness of carotenoids as antioxidants depended on their ability to trap peroxyl radicals with production of resonance-stabilized carotenyl radicals. The products identified from oxidations of carotenes and xanthophylls with molecular oxygen and other oxidizing agents are presented. The free radical-mediated mechanisms that have been proposed to account for the different classes of products are reviewed.

引用

页数：13

共 69 条

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