Archive for polyphenols
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Effects of low habitual cocoa intake on blood pressure and bioactive nitric oxide: a randomized controlled trial
CONTEXT: Regular intake of cocoa-containing foods is linked to lower cardiovascular mortality in observational studies. Short-term interventions of at most 2 weeks indicate that high doses of cocoa can improve endothelial function and reduce blood pressure (BP) due to the action of the cocoa polyphenols, but the clinical effect of low habitual cocoa intake on [...]
Critique on: Evaluation of Phenolic Compounds in Commercial Fruit Juices and Fruit Drinks
What the Glasgow study on commercial juices doesn’t say is that purple grape juice contains more than 50 per cent more sugar than Coca Cola, which comes to 16.66 g of sugar (glucose and fructose) per 100 ml of drink. An excessive intake of fruit juices could be harmful altogether. Furthermore, juices are processed food, [...]
Evaluation of Phenolic Compounds in Commercial Fruit Juices and Fruit Drinks
The total phenolic content of 13 commercially available fruit juices and juice drinks, selected to represent the most popular juice flavors in the United Kingdom, were analyzed using the Folin-Ciocalteu assay. Individual phenolic compounds were identified and quantified using HPLC-PDA-MS2. The catechin content and degree of polymerization of proanthocyanidins were also analyzed. Purple grape juice [...]
Polyphenols
Polyphenols are a group of chemical substances found in plants, characterized by the presence of more than one phenol group per molecule. Polyphenols are generally further subdivided into tannins, and phenylpropanoids such as lignins and flavonoids.
Is French red wine related to longevity?
It has been suggested that France’s high red wine consumption is a primary factor for the French longevity. It is believed that one of the active ingredients potentially related to this effect in red wine is resveratrol, but the concentration in wine seems too low to be significant. A study by Professor Roger Corder and [...]
Red wine procyanidins, vascular health and longevity
A study by Professor Roger Corder (R. Corder et al., “Oenology: Red wine procyanidins and vascular health”, Nature vol. 444, p. 566; 30 November 2006) has identified a particular group of polyphenols, known as oligomeric procyanidins, which they believe offer the greatest degree of protection to human blood-vessel cells. Tests with 165 wines showed that [...]
