Journal ArticleDOI
Antioxidants/antimutagens in food.
TLDR
Several reports have suggested that lipid peroxidation may result in destabilization and disintegration of cell membranes, leading to liver injury and other diseases, and finally, to aging and susceptibility to cancer.Abstract:
Oxygen is indispensable for aerobic organisms including, of course, human beings, but it is believed that oxygen also may be responsible for undesired phenomena. In particular, oxygen species such as hydrogen peroxide, superoxide radical anion, and singlet oxygen are proposed as agents attacking polyunsaturated fatty acids in cell membranes, giving rise to lipid peroxidation. Several reports have suggested that lipid peroxidation may result in destabilization and disintegration of cell membranes, leading to liver injury and other diseases, and finally, to aging and susceptibility to cancer (4).read more
Citations
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Structure-antioxidant activity relationships of flavonoids and phenolic acids
TL;DR: The factors underlying the influence of the different classes of polyphenols in enhancing their resistance to oxidation are discussed and support the contention that the partition coefficients of the flavonoids as well as their rates of reaction with the relevant radicals define the antioxidant activities in the lipophilic phase.
Journal ArticleDOI
Antioxidant activity of various tea extracts in relation to their antimutagenicity
Gow-Chin Yen,Hui-Yin Chen +1 more
TL;DR: The relationship between antioxidant activity and antimutagenicity of various tea extracts (green tea, pouchong tea, oolong tea and black tea) was investigated in this article, which showed that all tea extracts exhibited markedly antioxidant activity.
Journal ArticleDOI
Tannins and Human Health: A Review
TL;DR: The aim of this review is to summarize and analyze the vast and sometimes conflicting literature on tannins and to provide as accurately as possible the needed information for assessment of the overall effects of tannin effects on human health.
Journal ArticleDOI
Antioxidants in fruits and vegetables – the millennium’s health
Charanjit Kaur,H. C. Kapoor +1 more
TL;DR: The potential of fruits and vegetables rich in antioxidants, their health benefits and the eAect of processing on the bioavailability of these nutrients have been highlighted in this article, where some of the important methods used to determine the antioxidant activity.
Book
Phenolics in food and nutraceuticals
Fereidoon Shahidi,Marian Naczk +1 more
TL;DR: Phenolics in Food and Nutraceuticals as mentioned in this paper is the first single-source compendium of essential information concerning food phenolics, which reports the classification and nomenclature of phenolics and their occurrence in food and nutraceuticals.
References
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Book
Free radicals in biology and medicine
TL;DR: 1. Oxygen is a toxic gas - an introduction to oxygen toxicity and reactive species, and the chemistry of free radicals and related 'reactive species'
Journal ArticleDOI
Methods for detecting carcinogens and mutagens with the salmonella/mammalian-microsome mutagenicity test
TL;DR: The methods described include the standard plate test, the use and storage of the bacterial tester strains, preparation and use of the liver homogenates, and the methods of inducing the rats for elevated microsomal enzyme activity.
Journal ArticleDOI
Detection of carcinogens as mutagens in the Salmonella/microsome test: assay of 300 chemicals
TL;DR: There is a high correlation between carcinogenicity and mutagenicity: 90% (156/174) of carcinogens are mutagenic in the test and despite the severe limitations inherent in defining non-carcinogenicity, few "non-Carcinogens" show any degree of mutageniability.
Journal ArticleDOI
Uric acid provides an antioxidant defense in humans against oxidant- and radical-caused aging and cancer: a hypothesis.
TL;DR: It is shown that, at physiological concentrations, urate reduces the oxo-heme oxidant formed by peroxide reaction with hemoglobin, protects erythrocyte ghosts against lipid peroxidation, and protects ERYthrocytes from peroxidative damage leading to lysis.