Lukmayani, Yani, Giffar Abdiljabbar Najmudin, and Kiki Mulkiya Yuliawati. 2024. “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”. Jurnal Ilmiah Farmasi Farmasyifa 7 (2):179-91. https://doi.org/10.29313/jiff.v7i2.3177.