Antioxidant activity measured by the DPPH assay.Emanuele LombardoCristian SabellicoJan HájekVeronika StaňkováTomáš FilipskýValentina BalducciPaolo De VitoStefano LeoneEugenia I. BavaveaIlaria Proietti Silvestri
antioxidant activityin DPPH assay with the inhibition ratio ranging from 91.24% to 56.07%, and compound47(inhibition: 91.24%) showed the most prominent activity, which was similar to positive drugpropyl gallate(inhibition: 97.39%) under the same conditions [16]. Moreover, the structure-activity ...
The antioxidant activity by DPPH scavenging method is often reported as EC50 which is defined as the effective concentration of the antioxidant necessary to decrease the initial DPPH concentration by 50%. In addition, TEC50 which is the time needed to reach the steady state with EC50 may be ...
aTheir antioxidant activity (AA) was determined by measuring free radical scavenging activity by DPPH test and the coupled oxidation of beta-carotene and linoleic acid assay. The results showed that 5 is the most active compound in the DPPH free-radical scavenging test (IC(50) 1.9 microM) ...
In the present study, the antioxidative actions of Euryale ferox were evaluated by their abilities to scavenge 1, 1- diphenyl-2-picrylhydrazyl (DPPH) free radicals, to protect cell viability and to inhibit the formation of lipid peroxides. The effect of Euryale ferox on the activity of ...
The DPPH|DPPH redox couple exhibited a high degree of reversibility. Selectivity of detector was tested by different antioxidant compounds in ethanol-phosphate buffer solution, pH 7.40. The results of antioxidant activity of pure antioxidant compounds and of actual samples of beverages, expressed as ...
The antioxidant activity was further tested by the DPPH (2,2'-diphenyl-1-picrylhydrazyl) free radical scavenging method. High-performance liquid chromatography (HPLC) was used for chemical analyze. The extract of Achillea millefolium L showed scavenging effects against the DPPH radical. Furthermore, ...
DPPH radical scavenging activity assay The free radical scavenging activity of the fractions was measuredin vitroby 2,2′- diphenyl-1-picrylhydrazyl (DPPH) assay according to the method described earlier [18,19]. The stock solution was prepared by dissolving 24 mg DPPH with 100 ml methanol and...
15-lipoxygenase inhibitory activity 16S ribosomal RNA 16S rRNA 18S Ribosomal ribonucleic acid 1H‑NMR 1‑chloro‑2 1‑Diphenyl‑1‑picrylhydrazyl 1‑diphenyl‑2‑picrylhydrazyl 1‑Diphenyl‑2‑picrylhydrazyl 1‑diphenyl‑2‑trinitrophenylhydrazine scavenger 2 2-Benzen...
The antioxidant activity of the clove oil, BHA, BHT, α-tocopherol and trolox has been evaluated in a series of in vitro tests: DPPH free radical scavenging, ABTS+ radical scavenging, total antioxidant activity by ferric thiocyanate method, reducing power, scavenging of superoxide anion radical-...