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Getbig Bodybuilding Boards => Nutrition, Products & Supplements Info => Topic started by: Deicide on March 24, 2009, 07:35:07 AM

Title: Can one gain the same health benefits from eating red grapes as drinking red
Post by: Deicide on March 24, 2009, 07:35:07 AM

wine? As far as I know the polyphenols contained in red wine are contained in the skin of red grapes so no problem? Experts weigh in...

Title: Re: Can one gain the same health benefits from eating red grapes as drinking red
Post by: loco on March 24, 2009, 11:06:15 AM

"The results of the present study suggest that red grape anthocyanins are absorbed in small amounts and renally excreted as intact glucosides. Red grape juice may be quite equivalent or even superior to red wine with a comparable content of bioactive flavonoids/anthocyanins. Against past opinion, the strongly antioxidative anthocyanins are obviously better absorbed from grape juice than from wine. Consequently, the plasmatic antioxidative capacity (TRAP assay) in man is stronger elevated after grape juice consumption compared to wine. Finally, from the results it is hypothesized that the anthocyanin absorption may be improved by the glucose content of the grape juice; a potential alcohol effect on the intestinal uptake and metabolism remains to be elucidated. Nevertheless, further components evolving during wine processing may interfere with the anthocyanin absorption. In future studies, more exact data on the in vivo metabolism of glucosidically bound anthocyanins and other conjugates may substantiate their health protective effects."

http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1082893

Title: Re: Can one gain the same health benefits from eating red grapes as drinking red
Post by: loco on March 24, 2009, 11:12:03 AM

"The French have low coronary heart disease mortality with high fat consumption; this epidemiological anomaly is known as the "French Paradox" and is commonly attributed to the consumption of red wine. However, epidemiology studies have not convincingly shown a superiority of red wine vs. alcohol or other alcoholic beverages. We have used the hamster model of atherosclerosis to determine the active ingredient(s) of red wine responsible for the beneficial effect. Hamsters (nine in each group) were given a cholesterol/saturated fat for 10 weeks to induce foam cell formation. Water or 6.75% ethanol was given to the control groups. Beverages tested included red wine, dealcoholized red wine, and red grape juice, all diluted in half. Ethanol and all beverages caused a significant reduction in atherosclerosis. The combination of ethanol in red wine had the largest effect in decreasing atherosclerosis by both hypolipemic and antioxidant mechanisms. When compared with dealcoholized wine and normalized to polyphenol dose, red wine's beneficial effects can be attributed entirely to the polyphenols. Grape juice had a significant benefit at a much lower dose of polyphenols than the wines. Grape juice was calculated to be much more effective than red wine or dealcoholized red wine at the same polyphenol dose in inhibiting atherosclerosis and improving lipids and antioxidant parameters. This data suggests that polyphenolic beverages from grapes are beneficial in inhibiting atherosclerosis by several mechanisms. Grape juice or non-alcoholic red wine are an excellent alternative to red wine in this model of atherosclerosis."

http://www.ncbi.nlm.nih.gov/pubmed/11368998