| Assay Method Information | |
| | The antioxidant activity of the synthesized benzofuran amidated derivative is evaluated by DPPH free radical scavenging experiment. |
| Description: | 12.1 Preparation of Reagents and Standard Solutions(1) Preparation of DPPH solution: accurately weigh the appropriate amount of DPPH, add MeOH and perform ultrasonic dissolution to prepare 10 mM stock solution, and store at −20° C. Dilute to 0.1 mM with MeOH before the experiment and store in the dark;(2) Preparation of the test drug: accurately weigh the appropriate amount of the test drug, dissolve it in MeOH to prepare a 10 m stock solution, and store at −20° C. in the dark. Use MeOH to dilute to different concentrations (0-100 mM) before the experiment.12.2 Steps(1) Add 100 μL of different concentrations of the sample solution to be tested onto a 96-well plate, add 100 μL of 0.1 mM DPPH, and use the same volume of MeOH as a blank control and Quercetin as a positive control; After shaking for 1 min at 37° C. on a microplate reader, place it in the dark for 30 min, and set up 3 replicate wells in parallel.(2) The absorbance is recorded with a microplate reader at a wavelength of 517 nm. Data processing: Data is processed by using Excel analysis and half-inhibitory concentration (IC50) is calculated by using GraphPad Prism 6.0.2.(3) As shown in Table 2, most of the aryl benzofuran derivatives have obvious antioxidant effects, and based on their structure it can be inferred that the phenolic hydroxy groups have an important influence on their ability to scavenge free radicals. |
| Affinity data for this assay | |
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