Comprehensive evaluation of antioxidant activity: A chemometric approach using principal component analysis

- A novel DPPH assay combined with a chemometric approach was proposed.
- Relevant wavelengths for the radical scavenging activity evaluation were selected.
- New potential antioxidant activity indices were proposed and evaluated.
- The radical scavenging profile of biogenic amines and related drugs was evaluated.
- The study offers the possibility of significant reduction of experimentally work.