The sample are Clitoria ternatea where methanol and aqueous extract. The total inhibition show the aqueous extract have higher antioxidant than methanol. why? the methanol extract have higher phenolic,flavanoid content but have lower antioxidant than aqueous extract
Have you tried to replicate the procedure?
Make sure the sample and DPPH is well preserved and use a dark room when doing the experiment. DPPH is photosensitive
You have different antioxidants in your samples. In addition, the composition of aqueous extracts strongly depends on solution pH.
Compounds that have stronger antioxidants are likely to be extracted more with water rather than methanol, these compounds are compounds that are more polar than that of methanol.
This is due to the difference in the type and strength of antioxidants in the aqueous extract than that in the methanol extract.
- Badges
- Science topic