The results were calculated according to the same formula given for DPPH
radical scavenging test and expressed as average values with S.
At the end of the storage period, the oregano 1-to-1 refrigerated samples had the highest values for DPPH
, ABTS and TPC.
Measurement of the absorbance of free radical scavenging using DPPH
The qualitative test (bioautography antioxidant assay) involved DPPH
only, and the quantitative test involved DPPH
, hydrogen peroxide, and reducing assays.
Temperature, pH, and E/S ratio were selected as the independent variables and analyzed according to the preliminary experiment results, whereas DPPH
free radical scavenging activity was selected as the dependent variable.
Keywords: Erythraea ramosissima, scavenging activity DPPH
, ABTS, phenolics, flavonoid compounds, cytotoxicity.
, Radical scavenging activity, Maximal inhibitory concentration and Moraceae.
radical scavenging activity was measured following the methodology of Diaz et al.
Table 2: DPPH
radical-scavenging activity of irradiated purslane plant extracts
1 ug/ml 50% DPPH
radical scavenging activity and in the MTT assay the extract has relatively low cytotoxicity where the IC50 value of extract against Vero cells was 1078.
Caption: FIGURE 2-Antioxidant capacity by DPPH
(a) and ABTS (b) radical scavenging essay and FRAP (c) method, in soursop pulp extracts, obtained with four solvents and subjected to three methods of extraction.
Using previously reported method , the antioxidant activity/free radical scavenging activity of the Mn(II) complex was examined by DPPH
stable free radical.