| Abstrakt: |
Sugarcane juices of four genotypes resistant to internode borer namely Co 86032, Co 62175, Co 419 and Co 7804 were evaluated for antioxidant activity using 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and reducing power assays. In addition, antioxidant enzymes (Catalase [CAT], Superoxide dismutase [SOD], Peroxidase [POX] and Polyphenol oxidase [PPO]), total flavonoid and total phenol content were also determined. Results indicated higher DPPH radical scavenging activity in Co 7804 followed by Co 86032, Co 62175 and Co 419. Co 7804 exhibited higher reducing power compared to other sugarcane varieties. The total flavonoid content in Co 7804 was higher (183.13 µg/mL) compared to other sugarcane varieties (153.02 to 159.3813 µg/ml). The total phenolic content in Co 62175, Co 7804, Co 86032 and Co 419 sugarcane varieties are 3.092, 2.636, 1.52 and 2.351 mg/ml, respectively. The sugarcane genotype Co7804 showed higher CAT, SOD and PPO enzyme activity than Co 62175, Co 86032 and Co 419. The SOD and PPO activity exhibited by Co 86032 and Co 419 were almost similar. Peroxidase activity was higher in Co 62175 compared to other genotypes. These results signify the influence of genotype on the occurrence of varied antioxidant enzymes/molecules in internode borer resistant sugarcanes. [ABSTRACT FROM AUTHOR] |
