Abstract
<p>Purun tikus (<em>Eleocharis dulcis</em>) is a kind of swamp plant, can be found in open water areas, both in swamps and rice fields. <em>Purun tikus</em> is an indicator vegetation of acidic sulfate soil. Chemically, plants that able to adapt to special or extreme conditions, usually produce a compound that are unique and have unique bioactivity as well. This paper reports a phytochemical screening of <em>Purun tikus</em> methanol extract and its antioxidant activity. The results showed that the methanol extract of <em>Purun tikus</em> leaves contained phenolic compounds, flavonoids, tannins and terpenoids. By using DPPH method as an antioxidant test, the methanol extract of purun tikus leaves showed a strong activity, with IC<sub>50</sub> value was 58.58 ppm while vitamin C had an IC<sub>50</sub> value of 4.50 ppm.</p>
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