Endophytic actinobacteria of Eleutherine palmifolia as antioxidant producer

Abstract. Shabira AP, Tjahjoleksono A, Lestari Y. 2022. Endophytic actinobacteria of Eleutherine palmifolia as antioxidant producer. Biodiversitas 23: 4209-4215. can generate bioactive compounds similar to those produced by the host plant. The (L.) Merr is an example a widely utilized plant in Dayak community. Flavonoids, which have effects, are among found E. palmifolia. activity endophytic remains unidentified. aim this study was examine Antioxidant from isolates determined quantitatively using DPPH and ABTS methods. Identification types compound samples identified TLC assay bioautography test. Analysis flavonoid levels performed colorimetric aluminum chloride (AlCl3). result showed that extraction six with ethyl acetate solvent had different yields. extract EPB 6 isolate highest (0.013%) yield. 3 best activity, 53.85 mg/mL (DPPH) 42.43 (ABTS). same blue spots analysis, indicating presence flavonol flavones groups. test yellow color, qualitatively activity. total content also higher (25.30 QE/mg) than other five isolates, while it 46.03 QE/mg extract. It clear present produce antioxidants.