The correlation between active oxygens scavenging and antioxidative effects of flavonoids

The effects of bamboo leaf extract on growth performance, antioxidant traits, immune function and lipid metabolism of weaning piglets

“…But in the present study, it seems that BLE had no effect on the activity of T-SOD. Compelling evidence supports the conclusion that the anti-oxidant capacity of plant materialsis due to their high polyphenol contents (Hanasaki et al, 1994;Velioglu et al, 1998;Bouaziz et al, 2004;Park and Jhon, 2010). Lu et al (2005) reported that the anti-oxidants of bamboo leaves are a complex mixture, made up mostly of polyphenols.…”

2-Styrylchromones: Novel strong scavengers of reactive oxygen and nitrogen species

“…In addition, several papers refer to the XO inhibitory capacity of different flavonoids, including quercetin, apigenin, chrysin, and 7-hydroxyflavone. [28][29][30] Thus, in the present work the O 2 ÅÀ scavenging activity was measured by a non-enzymatic methodology in order to avoid the confounding effects derived from the XO inhibition. 2-Styrylchromones from group 1 were all effective scavengers of O 2 ÅÀ , indicating that the 3 0 ,4 0 -dihydroxyl substitution on the B-ring plays an important role in what concerns O 2 ÅÀ scavenging activity of 2-styrylchromones.…”

A sensitive microextraction by packed sorbent-based methodology combined with ultra-high pressure liquid chromatography as a powerful technique for analysis of biologically active flavonols in wines

“…The flavonoids also act as potent metal chelators and free radical scavengers and are powerful chain-breaking antioxidants [12], and control protein oxidation and advanced glycation end products (AGEs) formation [13]. By acting as free radical scavengers, flavonoids inhibit lipid peroxidation that can initiate LDL oxidation, a contributing factor to the development of atherosclerosis [14][15][16][17][18][19]. Epidemiological studies have shown that there is an inverse association between the intake of flavonols and flavones and the risk of coronary heart disease [20][21][22], stroke [23] and lung cancer [24].…”