Screening of the Antioxidant Activity of Hydrilla verticillata Plant

Abstract

The in vitro antioxidant activity of Hydrilla verticillata plant has been investigated by two methods: by estimating the degree of non-enzymatic haemoglobin measured colorimetrically at 520 nm and by assaying DPPH free radical scavenging activity. From the analysis, it is found that the chloroform extract has the highest and petroleum ether extract has the lowest antioxidant activity. The antioxidant activities of these extracts are closely identical in magnitude and comparable to those of the standard antioxidant compounds used.