Evaluation of the extinction coefficient of the ABTS derived radical cation.

被引：0

作者：

Henriquez, C ^{[1
]}

Lissi, E ^{[1
]}

机构：

[1] Univ Santiago Chile, Fac Quim & Biol, Dept Quim, Santiago, Chile

来源：

BOLETIN DE LA SOCIEDAD CHILENA DE QUIMICA | 2002年 / 47卷 / 04期

关键词：

ABTS; extinction coefficient; antioxidants evaluation;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The exact knowledge of the value of the extinction coefficient of the ABTS derived radical is necessary for its quantitative use in the evaluation of the antioxidant capacity of pure compounds and/or complex mixtures. We have performed experiments in order to stablish its lower and upper limits of its value. The limits obtained, 1.0 X 10(4) M-1 cm(-1) less than or equal to epsilon(734) less than or equal to 1.6 x 10(4) M-1 cm(-1) are fully compatible with previously reported data. However, the use of these values leads to large stoichiometric coefficients for the reaction of these radicals with simple substrates, such as monophenols or tryptophan.

引用

页码：563 / 566

页数：4

共 50 条

[41] Study on the antioxidant capacity of wastewaters from pulp and paper industry and distillery via the decolorization assay of radical cation ABTS
Rodriguez-Malaver, A
Perez-Perez, E
FREE RADICAL BIOLOGY AND MEDICINE, 2004, 36 : S131 - S131
[42] Factor influencing the antioxidant activity determined by the ABTS(.dagger) radical cation assay (vol 26, pg 195, 1997)
Miller, NJ
RiceEvans, C
FREE RADICAL RESEARCH, 1997, 26 (06) : 594 - 594
[43] Determination of the antioxidant capacity of culinary herbs subjected to various cooking and storage processes using the ABTS*+ radical cation assay
Chohan, Magali
Forster-Wilkins, Gary
Opara, Elizabeth I.
PLANT FOODS FOR HUMAN NUTRITION, 2008, 63 (02) : 47 - 52
[44] Determination of the Antioxidant Capacity of Culinary Herbs Subjected to Various Cooking and Storage Processes Using the ABTS*+ Radical Cation Assay
Magali Chohan
Gary Forster-Wilkins
Elizabeth I. Opara
Plant Foods for Human Nutrition, 2008, 63 : 47 - 52
[45] Ultrarobust stable ABTS radical cation prepared using Spore@Cu-TMA biocomposites for antioxidant capacity assay
Yan, Huaduo
Hou, Wenjing
Lei, Binglin
Liu, Junjun
Song, Runze
Hao, Wenbo
Ning, Yuchang
Zheng, Ming
Guo, Hongwei
Pan, Chunmei
Hu, Yonggang
Xiang, Yuqiang
TALANTA, 2024, 276
[46] Three-electron binding between carbonyl-like compounds and ammonia radical cation.: Comparison with the hydrogen bonded complex
Humbel, S
Côte, I
Hoffmann, N
Bouquant, J
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1999, 121 (23) : 5507 - 5512
[47] Reactions of the radical cation derived from 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS.+) with amino acids.: Kinetics and mechanism
Aliaga, C
Lissi, EA
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE, 2000, 78 (08): : 1052 - 1059
[48] An N-Heterocyclic-Carbene-Derived Distonic Radical Cation
Gallagher, Nolan M.
Ye, Hong-Zhou
Feng, Shuting
Lopez, Jeffrey
Zhu, Yun Guang
Van Voorhis, Troy
Shao-Horn, Yang
Johnson, Jeremiah A.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2020, 59 (10) : 3952 - 3955
[49] Water-catalyzed isomerization of the glycine radical cation. From hydrogen-atom transfer to proton-transport catalysis
Simon, S
Sodupe, M
Bertran, J
THEORETICAL CHEMISTRY ACCOUNTS, 2004, 111 (2-6) : 217 - 222
[50] Water-catalyzed isomerization of the glycine radical cation. From hydrogen-atom transfer to proton-transport catalysis
Sílvia Simon
Mariona Sodupe
Joan Bertran
Theoretical Chemistry Accounts, 2004, 111 : 217 - 222

← 1 2 3 4 5 →