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Research Article Open access CC BY 4.0

Antioxidant Activity-Guided Isolation of Phenolic Compounds from Leaves of Vitex pinnata (Lamiaceae)

Hudia Umami Faisal, Mai Efdi, Afrizal Itam, Tia Okselni, Lenny Anwar

Chemical Science International Journal · pp. 1–11 · Published 31 Dec 2022

10.9734/CSJI/2022/v31i6824

Abstract

The aim of this study is to isolate phenolic compounds from the ethyl acetate fraction of the leaves of V. pinnata Linn, which have antioxidant properties, guided by a TLC-Bioautography (Thin-layer chromatography) with a reagent of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH). The TLC-antioxidant bioautography technique has several advantages. It does not require a long time in testing, the sample used is small, and it can potentially obtain promising antioxidant-positive compounds.The isolation process led to obtaining two phenolic compounds. The UV-Vis, FTIR, and NMR spectrum analysis showed that the compounds were (1) p-hydroxybenzoate and (2) luteolin. Further antioxidant evaluation by DPPH assay showed a potential radical scavenging DPPH of luteolin (2) with an IC50 of 1.56±0.18 µg/mL.

Antioxidant structure elucidation TLC-bioautography Vitex pinnata Linn

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