Free radical scavenging effect of anthocyanins in red wines

Determination of major anthocyanin pigments in Hellenic native grape varieties (Vitis vinifera sp.): association with antiradical activity

“…ın et al, 2000). The findings on grape skins are consistent with observations reported for red wines, where in spite of examinations supporting the high antioxidant efficiency of purified fractions rich in anthocyanins (Ghiselli et al, 1998;Saint-Cricq de Gaulejac et al, 1999), other studies showed that the contribution of this class of flavonoids may be less pronounced (Burns et al, 2000;Rigo et al, 2000;Landrault et al, 2001;Arnous et al, 2001Arnous et al, , 2002b. On the contrary, it has been strongly substantiated that the antioxidant efficiency is very significantly correlated with the flavanol fraction, composed of monomeric catechins and proanthocyanidins (Simonetti et al, 1997;Burns et al, 2000;Rigo et al, 2000;Brenna and Pagliarini, 2001;Landrault et al, 2001;Arnous et al, 2001Arnous et al, , 2002b.…”

Hepatoprotection by chemical constituents of the marine brown algaSpatoglossum variabile: A relation to free radical scavenging potential

“…NBT, NADH, and PMS were prepared in 0.1 M phosphate buffer (pH 7.5), and the test samples were dissolved in DMSO. The reaction was performed in 96-well microtiter plates at 28°C, and the absorbance was measured at 560 nm (Saint-Cricq de Gualejac et al, 1999).…”

Application and comparison of four selected procedures for the isolation of cell-wall material from the skin of grapes cv. Monastrell

“…1.000 g) were immediately taken to the laboratory for analysis and then frozen. The physical-chemical characteristics of the grape berry samples were as follows: weight of a hundred grape berries 198.0 g; 24.0 • Brix; 333.0 mg skin/berry; 1273.0 mg pulp/berry; 16.7% skin; 64.1% pulp; extractability index [20] 55.…”