Comparison of antioxidant capacities and antioxidant components of commercial bitter melon (Momordica charantia L.) products

Authors : Esin AKYUZ, Sercan TURKOGLU, Kevser SOZGEN BASKAN, Esma TUTEM, Mustafa Resat APAK

Pages : 1663-1673

View : 16 | Download : 3

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :In this study, the total phenolic contents and total antioxidant capacities of some commercial bitter melon products insert ignore into journalissuearticles values(powder, packaged powder, capsule, paste in olive oil);, and of unripe and ripe fruits were determined by spectrophotometric and chromatographic methods. The total antioxidant capacities of unripe and ripe bitter melon samples, determined by using the CUPRAC insert ignore into journalissuearticles values(cupric reducing antioxidant capacity assay); and ABTS insert ignore into journalissuearticles values(2,2′-azino-bisinsert ignore into journalissuearticles values(3-ethylbenzthiazolin-6-sulfonic acid););/HRP insert ignore into journalissuearticles values(horseradish peroxidase); methods, were 42.5 and 36.3 μmol TRE insert ignore into journalissuearticles values(Trolox equivalent); g–1, and 8.7 and 7.0 μmol TRE g–1, respectively. The TAC insert ignore into journalissuearticles values(total antioxidant capacity); order of the studied samples using the same 2 methods were determined as follows: capsule insert ignore into journalissuearticles values(CUPRAC value, 140.8; ABTS/HRP value, 143.6 μmol TRE g–1); > packaged powder insert ignore into journalissuearticles values(129.6; 126.1); > powder insert ignore into journalissuearticles values(52.3; 64.3); > unripe fruit insert ignore into journalissuearticles values(42.5; 36.3); > paste in olive oil insert ignore into journalissuearticles values(17.6; 14.4); > ripe fruit insert ignore into journalissuearticles values(8.7; 7.0);. The order of phenolic content was found as follows: unripe fruit insert ignore into journalissuearticles values(193.2 μmol GAE insert ignore into journalissuearticles values(gallic acid equivalent); g-1); > capsule insert ignore into journalissuearticles values(162.0); > packaged powder insert ignore into journalissuearticles values(160.6); > powder insert ignore into journalissuearticles values(83.6); > paste in olive oil insert ignore into journalissuearticles values(38.3); > ripe fruit insert ignore into journalissuearticles values(14.6);.
Keywords : Momordica charantia, bitter melon, total antioxidant capacity, total phenolic content, CUPRAC, ABTS, HPLC