Antioxidant Functions Of Vitamins

Last Updated on 2nd Jan 2023

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Antioxidant Functions Of Vitamins

Various oxidation reactions in the body create substance call free radicals. Free radicals are actually chemical substances that contain a lone, unpaired electron in the outer orbit. The superoxide radical and hydroxyl radical are true free radicals. Two other related substances, referred to as non-radical oxygen species, are hydrogen peroxide and singlet oxygen.

Free radicals are unstable compounds, which possess an unbalance magnetic field that affects molecular structure and chemical reactions in the body and that free radical may be very reactive with body tissues. While oxidation processes are vital to life, certain oxidations may cause cellular damage by oxidation of unsaturated fats in cellular and sub cellular membranes and free radicals may cause such undesirable oxidations.

Halliwell (Halliwell, B, 1996) indicted that free radicals may harm DNA, lipids, protein, and other molecules, and could be involved in the development of cancer, cardiovascular disease, and possibly neurodegenerative disease. Fortunately, while free radicals are formed naturally in the body, body cells produce a number of antioxidant enzymes, such as superoxide dismutase, glutathione peroxidase, and catalase, which help to neutralize free radicals and prevent cellular damage.

In order to function properly, these enzymes which are often referred to as free radical-scavenging enzymes must contain certain nutrients such as copper, zinc, and selenium. Comparable to these enzymes, vitamins E, C and beta-carotene posses antioxidant properties.

Keywords

Antioxidant, vitamins, free radicals, oxidation.

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About the Author

Coach Jane has written various Tai Chi fitness articles relating to Sports Science. She is currently an undergraduate for Diploma in Sports & Exercise Science. She has been very enthusiastic & passionate about sharing her Tai Chi experience. She had participated and achieved many medals in various National and International Wushu Competitions.

Coach Jane is currently NROC registered with the Singapore Sports Council under Wushu/Tai Chi with a NCAP III certificate. Coach Jane approaches Tai Chi in a very scientific research based and systematically training system.

Besides giving personal and small group private coaching for adults, she also specializes in Tai Chi coaching for special population. To date, over thousands of students had benefited from her Sports Scientific Wushu & Tai Chi coaching.

To read more articles, please visit www.NewAgeTaichi.com

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References

Halliwell, B. (1996) Oxidative stress, nutrition and health: Experimental strategies for optimisation of nutritional antioxidant intake in humans. Free Radical Research 25: 57-74

Marieb, N.E. and H. Katja, (2007) Human Anatomy & Physiology (7th Ed) Pearson Benkamin Cummings

McArdle, W.D. et al., (2007) Exercise Physiology, Energy, Nutrition & Human Performance (6th Ed) Lippincott Williams & Wilkins Baltimore

Williams, H.M., (2007) Nutrition for Health, Fitness, & Sport (8th Ed) McGraw Hill

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