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References in periodicals archive ?
In addition, recombination of hydroxyl radical (*OH) also occurs, and thus these two reasons decline the overall efficiency of decolorization [24].
Caption: Figure 4: Hydroxyl radical scavenging capacity of APS with different molecular weights.
Since H 2 O 2 variation is not effecting the reaction rate and actually it is iron II concentration which is controlling the production of hydroxyl radicals .
Caption: Figure 7: Hydroxyl radical scavenging activity of Agaricus blazei in a range of concentrations (0,007-2 mg/mL) compared to Trolox.
In this work, four parameters including reducing power, ferrous ions chelating activity, and scavenging activities on hydroxyl radicals and DPPH radicals were collected to analyze the in vitro antioxidant of AlAPS and its fractions, and the results were shown in Figure 3.
When the temperatures were 80 and 100[degrees]C, the hydroxyl radical scavenging activity decreased slightly and DPPH radical scavenging activity increased slightly.
In direct method, sulfate radical decomposes the pollutant directly (see (9)); and in indirect method, it highly decomposes the pollutants through producing hydroxyl radicals [29]:
Ozone and hydrogen peroxide react with hydroxyl radicals to form hydroperoxyl radical (Eq.
In this mechanism, the molecular adsorption (of water and hydroxyl ions) is the limiting factor of the hydroxyl radical generation process.
The physico-chemical activity analyses showed that the EPS of strain WR-1 presented good flocculating metal chelating and hydroxyl radical scavenging activities while moderate lipid emulsification superoxide radical scavenging and lipid peroxidation inhibitory activities were observed.
Free radicals are reactive oxygen species (ROS) with unpaired electron including superoxide anion (O 2) hydroxyl radical (HO ) nitric oxide (NO ) hypochlorite ion (ClO) and peroxynitrite (ONOO) (Ak and Gulcin 2009; Li et al.
But Imlay argues that energy production, even when cranked up, is a wimpy starter for the full-scale hydroxyl radical assault needed to kill off a cell.