Penentuan Aktivitas Antioksidan, Kadar Fenolat Total dan Likopen pada Buah Tomat SoIanum Iycopersicum L)

Analytical method for the determination of antioxidant activity expressed as percentage of inhibition, concentration of total phenolic and lycopene in tomatoes (Solanum lycopersicum L) by using spectrophotometry UV-Visible has been done. The examination of antioxidant activity was performed on tomato methanol extract with concentration of 10 ; 30 ; 50 ; 70 and 90 μg/ml respectively by using DPPH (2,2 – difenil – 1 – pikrilhidrazil) radical gave percentage of inhibition of : 18 ; 32,8 ; 60,8 ; 81,0 and 92,5 % respectively. Concentration of phenolic total in fresh tomato was 1859,2 mg/kg calculated as gallic acid equivalent while concentration of lycopene was 14,725 ± 0,0017 mg/kg. Keywords : antioxidant activity, total phenolic, lycopene, Solanum lycopersicum