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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 | 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, ? 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 ?- 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 ?-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 Alazi, Arahul ALINDA NOVITA SARI, ALINDA NOVITA Alirmansyah, Alirmansyah ANAA ISTIMAROH Anandari, Qalbi Shanaz Anna Lilian Aras Mulyadi Arbaeyah, Arbaeyah ARDHIANS ABDILLAH WIJAYA, ARDHIANS ABDILLAH ARIAN DWI PEANUS, ARIAN DWI ARIEF, JAUZIE Arono Arono Asrial Asrial ASYER AGRISELIUS Azwandi Azwandi Bintal Amin Bobby Yuhanda, Bobby Chairunas Chairunas Depari, Riky Oktavianus DERI MUHAMAD NURENDI, DERI MUHAMAD Desi Purnamasari Taher, Desi Purnamasari DEWI APRI ASTUTI Diani, Irma Dianti, Devi Dietriech G Bengen Elhakim, Siti Khairani Erlidawati Erlidawati Ernita Dewi Meutia Evy Damayanthi Fadlisyah Fadlisyah Fahriansyah Fahriansyah Faisal Faisal Faizal Chan FAKHRULLAH, AHMAD FARID Firnanda, Ary FITRA PADILLAH Frimasary, Amelia Eka GEMAHAPSARI, PARTRIANTI HARI WASKITO Hariandi, Ahmad HERI SEPTIADI ALIUS Heriyanto, Teguh Herman, Hanafi Herman, Welly IHFAZH NURDIN EKA NUGRAHA Ilham Ilahi Ilham Martadona, Ilham Irwan Koto, Irwan KANIA SAWITRI, KANIA Karsim, Nanang Khairul Mukmin Lubis, Khairul Mukmin Kurniawan, Agung Rimba Kurniawan, Dwi Agus Kurniawan, Dwi Agus Lestari, Meri Lestari, Surya Liana Rahmayani Lubis, Nila Sari M. Muchalal Madarisa, Fuad Maison Maison, Maison Maisura Maisura Muhammad Fahmi Muhammad Irhamsyah Muhammad Nazar Mukhlis Mukhlis Mukhroji, Mukhroji Mukroji, Mukhroji NANDANG TARYANA Nasaruddin Nasaruddin NASRUN HARIYANTO Nazaruddin Nazaruddin Novita MZ, Novita MZ Nugroho, Putut Nur Amalina Nur Atikah Nurhamsih, Yeli Nurlina Nurlina Oktavian, Bayu Pamela, Issaura Sherly Perdana, Rahmat Pipih Suptijah Piyana, Suci Okta Pranata, Eryc Pratama, Reza Aditya Purwanti, Neneng R. GERHA TERIMANANDA, R. GERHA RAGIL, YUDHO Rasoel Hamidy Resigia, Elara Rezeki, Nura Riani Riani, Riani RIKI ARNANDO, RIKI Rimbawan Rimbawan Rina Febriana Rizal Munadi Rizki, Rahmad RYAN AGUNG TRIAJI Saifuddin Ishak, Saifuddin SALISTIA PUTRA PERDANA Saputri, Dewi Sarfina, Ega Aulia Sastra, Hasan Yudie Septiasari, Retno Simbolon, Novhitasari SITI SAODAH Sofyan H Siregar Sofyan, Dedi Sri Winarni Subandiyo, May Suhaemi, Zasmeli Sulastri Sulastri Susilo, Hendri Suwarno, Bambang Syafriani Syafriani, Syafriani Syahputra, Muhammad Reza Syahrian, Windi 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 Z, Yulia Rahmawati Zuhar Musliyana, Zuhar Zulfaneti Zulfaneti