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Journal : Sinteza

Perbandingan Metode Ekstraksi terhadap Kadar Flavonoid dan Aktivitas Antioksidan Ekstrak Etanol Daun Pulai (Alstonia scholaris) dengan Metode 2,2-difenil-1-pikrilhidrazil (DPPH) Wahyuningsih, Sri; Sari, Nur Indah; Wahid, Hilmiati; Azima, Azima
Sinteza Vol. 6 No. 1 (2026): February
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/sinteza.v6i1.31992

Abstract

Pulai leaves (Alstonia scholaris) are known to contain various secondary metabolites such as flavonoids, so the choice of extraction method is a factor that affects the quality and quantity of bioactive compounds produced. This study aims to compare the total flavonoid content and antioxidant activity of ethanol extracts of pulai leaves obtained through two different extraction methods, namely maceration and reflux. This study is a laboratory experimental study using 96% ethanol solvent in both extraction methods. The flavonoid content was determined quantitatively using UV-Vis spectrophotometry with quercetin as the standard. The antioxidant activity test was performed using the 2,2-diphenyl-1-picrylhydrazil (DPPH) method based on the IC50 value. The results showed that the extract obtained using the reflux method had a higher flavonoid content of 17.11±0.03 mgQE/g and an IC50 value of 7.84±0.02 ppm, while the maceration method produced a flavonoid content of 8.42±0.02 mgQE/g and an IC50 value of 12.53±0.17 ppm. As a positive control, vitamin C had an IC50 value of 5.26±0.08 ppm. Based on these results, the extraction of pulai leaves (Alstonia scholaris) using the reflux method proved to be more effective in extracting flavonoid compounds and had higher antioxidant activity compared to the maceration method.
Co-Authors Abdillah, Achlish Ali, Muharis Alrahmi, Nurul Amin, Rahmahsinar Anak Agung Gede Sugianthara Anbiya, Lulu Ansar, Muhammad Aksa Aprilika Merza Yulis Arista Fauzi Kartika Sari Arum, Mike Azima, Azima Bagus Dwi Hari Setyono Bidarita Widiati Della Apriyanti Desti Deria Rahmadani Devora, Angelina Dian Alfiah Djamadin, Iciyanti Dwiyani Sudaryanti Dzakiyah Nuradillah, Nahda Endang Nurcahyani Fijriani, Nur Gita, Gita Hakim, Azima Halida, Arfin Nurma hanifah, iis Husaini . I Wayan Suteja Ida Ayu Putu Sri Widnyani Idah Andriyani Idris, Rabiatun Ikbal Ikbal Inayah Rahmawati Putri Utami Indira Putri, Aviva Irwan Irwan Ismiyatun Ismiyatun Istiqomah, Nuril Joyce Angela Yunica, Joyce Angela Khaerul Muslim Kholib, Abdul Leleallo, Wisye Riska Lestari, Ning Puji Lukman, Sartika M, Sakriawati Mahfut Makanung, Rudy Marhawati, Marhawati Melly Kristanti Mila Citrawati Mulya Ramadani, Suci Musviro mutiara mutiara Nasrul Rofiah Hidayati Nisa, Faraidyah Ayu Niswah, Izzatun Nur Indah Sari NurAfni NurAfni Nurul hayati NURUL HAYATI Pannyiwi, Rahmat Parawansa, Dirgah Agum Pujiati Pujiati R Endro Sulistyono Rahmad Risan Rahmawati Rahmawati Renan Subantoro Rifki Fauzan, Andi Rossi Prabowo Safaruddin Setiawan, Prayitno Shofia Nur Awami Sirajuddin Sirajuddin Sitti Mawaddah Umar Sudirman, Agriawan Sugeng Sutiarso Sultan, Muh Arsul Haq Syaifuddin Kurnianto Teuku Abdullah Tina Melinda Umar, Misba Wahid, Hilmiati Wahyudin wahyuni wahyuni Wati, Alifah Rahma Widiyani', Aniya Widyastuti Widyastuti Wiyanti, Ayu Sri Yana Fajriah Yudho Bawono Yulianty Zuriyah, Nurul