EVALUATION OF IN VITRO ANTIOXIDANT AND α-AMYLASE INHIBITORY ACTIVITY OF PHYLLANTHUS INDOFISCHERI BENNET
DOI:
https://doi.org/10.22159/ijpps.2016v8i11.14013Keywords:
Phyllanthus indofischeri, Antioxidant activity, Nil, Leaf and bark, Total phenolic content, Total flavonoid contentAbstract
Objective: The present study evaluates the antioxidant and α-amylase inhibitory activity of leaf and bark extracts of Phyllanthus indofischeri with methanol and water as solvents. In addition to this, the total phenolic content and total flavonoid content was determined.
Methods: The total phenolic and total flavonoid content of the extracts was determined by folin ciocaletus reagent method and aluminium chloride colorimetric method respectively. The antioxidant and α-amylase inhibitory activity were measured by various assays, including α, α-diphenyl-ẞ-dipicryl-hydrazyl (DPPH) free radical scavenging, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonicacid) (ABTS) radical scavenging, superoxide radical scavenging, total antioxidant capacity by phosphomolybdate method and porcine pancreatic α-amylase inhibitory assay. The IC50 values were calculated and compared with standards such as gallic acid, ascorbic acid and α-acarbose.
Results: The results illustrated that all the extracts of Phyllanthus indofischeri exhibit significant antioxidant and α-amylase inhibitory activity. Among the extracts, methanolic leaf extract showed high levels of activity followed by bark water extract.
Conclusion: Phyllanthus indofischeri extracts had shown antioxidant and α-amylase inhibitory activity. On the basis of these results, Phyllanthus indofischeri can be used as a natural antioxidant and hypoglycemic agent against various disorders related to oxidative stress; and the isolation of bioactive compounds was warranted.
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