| dc.description.abstract | Abstract. Nurhasnawati H, Sundu R, Sapri, Supriningrum R, Kuspradini H, Arung ET. 2019. Antioxidant activity, total phenolic and
flavonoid content of several indigenous species of ferns in East Kalimantan, Indonesia. Biodiversitas 20: 576-580. This study aimed to
determine the total phenolic and flavonoids content and antioxidant activity of ethanol extract of several indigenous species of ferns in
East Kalimantan. Total phenolic content was determined by Folin-Ciocalteau method and flavonoid content was measured by
colorimetric method. Antioxidant activity was evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) method. The result of photochemical
screening indicated that the leaves of Plagiogyria pycnophylla, Plagiogyria glauca, and Stenochlaena palustris contained alkaloid,
flavonoid, tannin, saponin, and steroid while Acrostichum aureum contained flavonoid, tannin, saponin and steroid. The result showed
extract Acrostichum aureum had the highest total phenolic content (366.4573 ± 2.2117 mg GAE.g-1
), flavonoid content (228.6087 ±
2.2548 mg QE.g-1
), and very strong antioxidant activity with IC50 value 29.5303 ppm. There is positive correlation between total
phenolic content, flavonoid with antioxidant activity.
Keywords: ferns, antioxidant, DPPH, total phenolic, flavonoid | |
