Abstract

• In the present study, the rhizomes and leaves of Hedychium coronarium J.Koenig (Ngwe-pan) were collected from Hmawbi Township, Yangon Region. The relative abundance of elemental composition was determined by ED-XRF method resulting the major mineral elements such as potassium, sulphur, calcium and phosphorus in the Ngwe-pan rhizomes and potassium, chlorine, calcium, sulphur in the Ngwe-pan leaves. In addition, the nutrient values of Ngwe-pan rhizomes and leaves were determined by AOAC method showing the moisture (13.08 %), ash (7.34 %), protein (3.36 %), crude fiber (14.81 %), crude fat (4.27 %), carbohydrates (25.17 %) and energy value (152.55 kcal/100 g) in Ngwe-pan rhizomes and moisture (13.89 %), ash (8.21 %), protein (7.46 %), crude fiber (35.42 %), crude fat (4.10 %), carbohydrates(12.93 %) and energy value (118.46 kcal/ 100g) in Ngwe-pan leaves. The preliminary phytohchemical constituents of both samples were examined by using the Test Tube method. According to the phytochemical tests, Ngwe-pan rhizomes and leaves extracts showed the presence of alkaloids, carbohydrates, flavonoids, glycosides, organic acids, phenolic compounds, reducing sugars, starch, saponins, steroids, terpenoids and tannins. However, cyanogenic glycosides were not found in these samples. The screening of antioxidant activities of Ngwe-pan rhizomes and leaves was carried out by DPPH method. Ascorbic acid was used as the standard. From the screening, among the extracts of rhizomes and leaves samples, the EtOH and H2O extract of Ngwe-pan leaves showed the more potent antioxidant activity than that of the rhizome extracts.