Photostabilization of phycocyanin and anthocyanin in the presence of biopterin-α-glucoside from Spirulina platensis under ultraviolet ray

被引：21
作者：
Saito, T
Ishikura, H
Hada, Y
Fukui, K
Kodera, Y
Matsushim, A
Inada, Y
机构：
[1] Toin Univ Yokohama, Toin Human Sci & Technol Ctr, Dept Biomed Engn, Aoba Ku, Yokohama, Kanagawa 2258502, Japan
[2] Spirulina Bio Lab Co Ltd, Yodogawa Ku, Osaka 5320011, Japan
来源：
DYES AND PIGMENTS | 2003年 / 56卷 / 03期
关键词：
biopterin; phycocyanin; cyanidin; spirulina; photostability; pigment;
D O I：
10.1016/S0143-7208(02)00163-8
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Biopterin-alpha-glucoside purified from Spirulina platensis is stable to irradiation by visible and ultraviolet light. Its absorption spectrum shows maxima at 268 nm and 340 nm and a fluorescence band appears at 447 nm. Although cyanidin-3-galactoside with an absorption maximum at 514 mm (red colour) is unstable and is decolourized by UV light, the pigment becomes stable in the presence of biopterin-alpha-glucoside. Similar photostabilization phenomenon was observed for phycocyanin (lambda(max) 614 nm) consisting of phycocyanobilin as chromophore and protein subunits alpha(3)beta(3) in the presence of biopterin-alpha-glucoside. Although the chromophore of phycocyanin is related to phycocyanobilin and protein conformation, the chromophore can be stabilized to UV light in the presence of biopterin-alpha-glucoside. (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：203 / 207
页数：5
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