Simple flow injection for screening of total antioxidant capacity by amperometric detection of DPPH radical on carbon nanotube modified-glassy carbon electrode

► A new FI method was proposed for measuring 'total antioxidant capacity' or TAC of vegetable extracts. ► We employed CNT to improve the sensitivity of DPPH
- amperometric detection on glassy carbon electrode. ► The developed method is applicable to all types of plant extracts.