26 Thirty-four commercial lager beers were analysed for their hop bitter acid, phenolic acid 27 and polyphenol contents. Based on analytical data, it was evident that the beers had 28 been produced using a range of different raw materials and hopping practices. Principal 29 Components Analysis was used to select a sub-set of 10 beers that contained diverse 30 concentrations of the analysed bitt...

The objective of the present investigation is to examine okara, a suitable substrate for polyphenol extraction, and to develop a feasible eco-friendly process to maximize the yield of antioxidant phenolics. Box-Behnken design (BBD) based on response surface methodology (RSM) was employed to investigate the effect of temperature (°C), solvent fraction (%) and incubation time (min) on polyphenol ...

Chokeberry and elderberry fruits are rich sources of polyphenols, the compounds with significant antiradical and chelating properties. They are studied intensively because of beneficial effects on human health. In this study, three fractions enriched with different classes of polyphenols were isolated from chokeberry and elderberry to study their antiradical activity by DPPH test. The first fra...

Background Oxidative stress has been implicated in the pathogenesis of hypertension and antioxidant compounds have been used in the prevention and treatment of this disease. In this context, coconut oil (CO) was found to have antioxidant property due to its high polyphenol content. In this study, we investigated the effects caused by chronic treatment with CO on mean arterial pressure (MAP), he...

in this research the 2 sub verities of rhizopus oligosporus was used for production of antioxidative bioactive compounds from whey protein concentrate (wpc) and apple pomace. total phenolic compounds, free radical scavenging ability by dpph and antioxidant protection factort were evaluated in 48 determined treatments. effect of incubation temperature in three levels 23, 27, 31°c, incubation tim...

Chemoprevention has recently gained a new dimension due to the possibility of studying the mechanisms of action of chemopreventive agents at the molecular level. Many compounds have been proved to inhibit early stages of carcinogenesis in experimental models. These compounds include both recognized drugs (such as tamoxifen and nonsteroidal anti-inflammatory drugs) and natural constituents of ed...

The aim of this work was to study the phenolic compounds identified in rice, their antioxidant activity and their potential beneficial effects on health. In vitro and in vivo studies evaluating the rice grains with different pericarp colour (light brown, red and black) showed potential beneficial effects on health related to the polyphenol content of the grain, such as reduction of oxidative st...

Polyphenols are a wide family of compounds found in fruits and vegetables, wine, tea, cocoa, and extra-virgin olive oil, which exhibit strong antioxidant activity by scavenging different families of Reactive Oxygen Species (ROS). One of the most effective members of the polyphenol family in terms of free radical scavenging is hydroxytyrosol, 2-(3,4dihydroxyphenyl)ethanol (Fernández-Bolaños et a...