TESTING ANTIOXIDANT ACTIVITY AND DETERMINING FLAVONOID CONTENTS OF ETHANOL EXTRACT OF RED BELT LEAVES (Piper ornatum N.E.Br.) USING MACERATION AND ULTRASOUND-ASSISTED EXTRACTION METHODS
PENGUJIAN AKTIVITAS ANTIOKSIDAN SERTA PENETAPAN KADAR FLAVONOID EKSTRAK ETANOL DAUN SIRIH MERAH (Piper ornatum N.E.Br.) DENGAN METODE EKSTRAKSI MASERASI DAN ULTRASOUND-ASSISTED EXTRACTION
DOI:
https://doi.org/10.29313/jiff.v7i2.3177Keywords:
antioksidan, flavonoid, Piper ornatum, maserasi, ultrasonikAbstract
Red betel plant (Piper ornatum N.E.Br.) has been used empirically and has been shown to have various pharmacological activities. This study aims to determine the antioxidant activity and flavonoid content of ethanol extract of red betel leaves using maceration and ultrasound-assisted extraction (UAE) methods based on IC50 values and flavonoid levels expressed in QE (Quercetin equivalent). Red betel leaves were extracted using 96% ethanol solvent by maceration and Ultrasound-assisted extraction (UAE) methods (10, 20, 30, 40 minutes). Determination of antioxidant activity was carried out by the DPPH method and the determination of flavonoid levels by the spectrophotometric with AlCl3 reagent.
The antioxidant test results showed that the antioxidant activity of the macerated extract had an IC50 value of 36.54 ppm, while the 40 minutes ultrasonic extract had an IC50 value of 30.54 ppm. The results of determining the flavonoid content of maceration extract and 40 minutes of ultrasonic extraction showed flavonoid levels of 4.07 mgQE/g and 4.32 mgQE/g extract, respectively. The test results show that Ultrasound-assisted extraction is an extraction method that produces better antioxidant activity and flavonoid levels than the maceration method.
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