Articles

Found 1 Documents
Search
Journal : Jurnal Rekayasa Kimia

Aktivitas Antioksidan Ekstrak Etanol Daun Ubi Jalar Ungu (Ipomea batatas L.) Hasil Budidaya Daerah Saree Aceh Besar Sulastri, Sulastri; Erlidawati, Erlidawati; Syahrial, Syahrial; Nazar, Muhammad; Andayani, Thursina
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 3 (2013): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (214.298 KB) | DOI: 10.23955/rkl.v9i3.781

Abstract

This research was aimed to investigate the antioxidant activity of purple sweet potato leaves cultivated in Saree, Aceh Besar. The study was conducted in two stages. The first stage included sampel preparation, phytochemical test, λ max determination, testing of antioxidant activity by reducing power method, and TLC analysis. In stage 2 purification using column chromatography, phytochemical test, and antioxidant activity test were performed. The sample was dissolved by using 70% ethanol and 1.5 N HCl with a ratio of 85:15 (v/v). Phytochemical test results showed that the sample consisted of not only flavonoids but also tannins. The Rf value for both sample and standard are respectively 0.55 and 0.61 with absorbance value of 0.826 and 0.845. The sample was then purified using column chromatography and 25 fractions were grouped based on the color intensity abbreviated as FA, FB and FC. Photochemical test was then conducted to examine the purity of obtained fraction and FB was found to be relatively purer than other fractions. Reducing power test of FB with variation of weight 10 mg, 20 mg, 30 mg, 40 mg, and 50 mg gave the percentage inhibition 64.1, 6.7, 67.9, 70.3 and 73.6, respectively, while the percentage value of α- tocopherol at simmilar weight variation are 32.1, 36.7, 43.5 and 50.2%. From the result obtained, it can be concluded that the antioxidant activity of ethanol extract of thick purple sweet potato leaves is higher than α-tocopherol.Keywords: antioxidant activity, purple sweet potato leaves, reducing power
Co-Authors ABD. ASHAL ALAM, ABD. ASHAL Adelina Meria Uli Sagala, Herlina ADITYA FITRIANSYAH Afdhal Afdhal ALINDA NOVITA SARI, ALINDA NOVITA ANAA ISTIMAROH Anna Lilian Aras Mulyadi ARIAN DWI PEANUS, ARIAN DWI Arono Arono Asrial Asrial ASYER AGRISELIUS Azwandi Azwandi Bintal Amin Bobby Yuhanda, Bobby Boy Tarigan Boy Tarigan Chairunas Chairunas Depari, Riky Oktavianus DERI MUHAMAD NURENDI, DERI MUHAMAD Desi Purnamasari Taher, Desi Purnamasari Dietriech G Bengen Erlidawati Erlidawati Fadlisyah Fadlisyah Fahriansyah Fahriansyah Faisal Faisal Firnanda, Ary FITRA PADILLAH Frimasary, Amelia Eka HARI WASKITO IHFAZH NURDIN EKA NUGRAHA Ilham Ilahi Irwan Koto, Irwan Karsim, Nanang Khairul Mukmin Lubis, Khairul Mukmin Kurniawan, Dwi Agus Lestari, Meri Lestari, Surya Liana Rahmayani M. Muchalal Maisura Maisura Mena Uly Tarigan Muhammad Fahmi Muhammad Irhamsyah Muhammad Nazar Mukhlis Mukhlis Mukroji, Mukhroji NANDANG TARYANA Nasaruddin Nasaruddin NASRUN HARIYANTO Nazaruddin Nazaruddin Novita MZ, Novita MZ Nur Amalina Nur Atikah Nurhamsih, Yeli Oktavian, Bayu Pamela, Issaura Sherly Purwanti, Neneng R. GERHA TERIMANANDA, R. GERHA Rasoel Hamidy RIKI ARNANDO, RIKI Rina Febriana Rizal Munadi Saifuddin Ishak, Saifuddin SALISTIA PUTRA PERDANA Saputri, Dewi Sarfina, Ega Aulia Sastra, Hasan Yudie Simbolon, Novhitasari SITI SAODAH Sofyan H Siregar Sofyan, Dedi Sri Winarni subandiyo, may Sulastri Sulastri Suwarno, Bambang Syahputra, Muhammad Reza Tanjung, Cahyani Fitrah Teuku Yuliar Arif Thursina Andayani TIRZA NOVA TRI PRARTONO TRIWAHYU RUBIANTO Veranita, Desi Verid Aria Susammesin, Verid Aria Wahyudi Wahyudi Waluyo Waluyo WILDAN BUDIMAN Yeni Sustriani, Yeni Yogi Irawan Yudi Pratama, Yudi Yudi Sastriawan Yulina Sari, Yulina Yunirwan, Teuku Zuhar Musliyana, Zuhar Zulfaneti Zulfaneti