Photosensitizer activity of model melanoldins

被引：15

作者：

Argirova, MD ^{[1
]}

机构：

[1] Med Univ, Dept Chem & Biochem, Plovdiv 4002, Bulgaria

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2005年 / 53卷 / 04期

关键词：

melanoldins; Maillard reaction; photosensitizers; singlet oxygen; superoxide radical; hydroperoxides; photobteaching;

D O I：

10.1021/jf049270h

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

This study investigates the potential of melanoldins, the brown pigments formed during Maillard reaction in thermally processed foods, to act as photosensitizers. Seven model melanoldins obtained from different amino and carbonyl compounds were irradiated in a photoreactor or exposed to sunlight. Changes in the ultraviolet-visible spectra and photobieaching were registered in all studied melanoidin systems, and reactive oxygen species were quantified. The data suggest a UV-A-dependent production of singlet oxygen via type II photoreaction and low levels of superoxide radical via type I reaction, The significance of these melanoidin-bound photosensitizers for food stability and quality is discussed.

引用

页码：1210 / 1214

页数：5

共 29 条

[1]

Ames J.M., 2000, MELANOIDINS FOOD HLT, V1, P13

[2]

Anese M., 1993, Italian Journal of Food Science, V5, P75

[3] Glycated proteins can enhance photooxidative stress in aged and diabetic lenses [J].

Argirova, MD ;

Breipohl, W .

FREE RADICAL RESEARCH, 2002, 36 (12) :1251-1259

[4]

BRADLEY D, 1992, CRIT REV FOOD SCI NU, V32, P211

[5] ASCORBIC-ACID BROWNING - THE INCORPORATION OF C(1) FROM ASCORBIC-ACID INTO MELANOIDINS [J].

DAVIES, CGA ;

WEDZICHA, BL .

FOOD CHEMISTRY, 1994, 49 (02) :165-167

[6] Advanced glycation endproducts as UVA photosensitizers of tryptophan and ascorbic acid:: consequences for the lens [J].

de La Rochette, A ;

Birlouez-Aragon, L ;

Silva, E ;

Morlière, P .

BIOCHIMICA ET BIOPHYSICA ACTA-GENERAL SUBJECTS, 2003, 1621 (03) :235-241

[7] Self-Tanning LotionsAre They a Healthy Way to Achieve a Tan? [J].

Zoe D. Draelos .

American Journal of Clinical Dermatology, 2002, 3 (5) :317-318

[8] DEFINITION OF TYPE-I AND TYPE-II PHOTOSENSITIZED OXIDATION [J].

FOOTE, CS .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1991, 54 (05) :659-659

[9]

Franzke C., 1954, DEUT LEBENSM-RUNDSCH, V50, P251

[10] SCAVENGING OF ACTIVE OXYGENS BY MELANOIDINS [J].

HAYASE, F ;

HIRASHIMA, S ;

OKAMOTO, G ;

KATO, H .

AGRICULTURAL AND BIOLOGICAL CHEMISTRY, 1989, 53 (12) :3383-3385

← 1 2 3 →