By Kyle J. Norton
Antioxidants are stable atoms that inhibit oxidation induced by free radicals.
Free radicals are highly unstable atoms. Internally, free radicals are produced by our body's cell metabolism. Externally, free radicals can enter our body from the environmental sources, such as the air we breathe, the food we eat, and the water we drink.
In other words, any chemical compounds or molecules which process an oxygen atom can be free radicals in a chemical reaction with other atoms.
According to epidemiological studies, free radicals are dangerous to human health in excessive amounts. Overexpression of free radicals-induced oxidative stress has been found to damage the lipid, and protein and induce the alternation of healthy cell DNA.
Out of all damages caused by the overexpression of free radicals, some researchers suggested that lipid peroxidation induced by free radicals has a strong implication in the pathogenesis of various disorders and diseases.
In a healthy person, antioxidants produced by the body are more than enough to counter the expression of free radicals. However, in people with a weakened immune system, the intake of dietary antioxidants regularly can be helpful.
Oxidative stress can either be caused by the overexpression of free radicals or the depletion of antioxidant enzymes produced by the host.
Some researchers suggested that by balancing the ratio of free radicals and antioxidants in the body, diseases associated with oxidative stress can be preventable.
Dr. Monica H Carlsen wrote, "A plant-based diet protects against chronic oxidative stress-related diseases. Dietary plants contain variable chemical families and amounts of antioxidants".
And, "there are several thousand-fold differences in antioxidant content of foods. Spices, herbs, and supplements include the most antioxidant-rich products in our study, some exceptionally high. Berries, fruits, nuts, chocolate, vegetables, and products thereof constitute common foods and beverages with high antioxidant values".
The results strongly suggested that intake of a higher amount of berries, fruits, nuts, chocolate, and vegetables which are antioxidant-rich products can protect us against the risk of diseases associated with oxidative stress.
The small, white navy bean, also called pea bean or haricot, popular in both dry and green forms, is very popular in Britain and the US, native to Peru. the beans are now grown and consumed across the world, due to their numerous health benefits.
With an aim to find a natural compound for the treatment of diseases associated with oxidative stress, researchers examined the antioxidant effects of a pinto bean, cowpea, baby lima bean, lentil, chickpea, small red bean, red kidney bean, black kidney bean, navy bean, and mung bean extracts.
Navy beans showed significantly lesser antioxidant activity in vitro compared to those lentils with total antioxidant activity (720.68 U/g), and DPPH• scavenging activity (38.5%).
In free radical scavenging activity, navy bean also showed a lesser activity compared to those of black kidney bean (85.68%) and baby lima bean (74.97%) extracts in inhibiting the oxidation of Among the extracts, hydroxyl radicals (•OH).
In the chemical analysis, the total antioxidant activity (r=0.84), DPPH• scavenging activity (r=0.83), and total reducing power (r=0.84) were positively correlated with the total phenolic content which also lower in the navy been compared to those of lentils.
Taken altogether, the navy bean may be considered a natural antioxidant for the treatment of diseases associated with oxidative stress, pending the confirmation of the larger sample size and multicenter human study.
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Author Biography
Kyle J. Norton (Scholar, Master of Nutrition, All right reserved)
Health article writer and researcher; Over 10.000 articles and research papers have been written and published online, including worldwide health, ezine articles, article base, health blogs, self-growth, best before it's news, the Karate GB daily, etc.,.
Named TOP 50 MEDICAL ESSAYS FOR ARTISTS & AUTHORS TO READ by Disilgold.com Named 50 of the best health Tweeters Canada - Huffington Post
Nominated for shorty award over last 4 years
Some articles have been referenced in medical research, such as the international journal Pharma and Bioscience, ISSN 0975-6299.
Sources
(1) In vitro antioxidant activity of extracts from common legumes by Zhao Y1, Du SK2, Wang H1, Cai M. (PubMed)
(2) The total antioxidant content of more than 3100 foods, beverages, spices, herbs, and supplements used worldwide by Monica H Carlsen,#1 Bente L Halvorsen,#1 Kari Holte,1 Siv K Bøhn,1 Steinar Dragland,2Laura Sampson,3 Carol Willey,3 Haruki Senoo,4 Yuko Umezono,4 Chiho Sanada,4Ingrid Barikmo,5 Nega Berhe,1 Walter C Willett,3 Katherine M Phillips,6 David R Jacobs, Jr,1,7and Rune Blomhoff. (PMC)
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