UJI AKTIVITAS ANTIOKSIDAN DENGAN METODE LINOLEAT-TIOSIANAT SERTA PENENTUAN KADAR FENOLIK DAN FLAVONOID TOTAL EKSTRAK ETANOL DAUN KETAPANG (Terminalia catappa L.)
| Main Authors: | Muryati, Sri; Sri Muryati, Devi Ray Yuniawati, Erlita Verdia Mutiara, Yuniawati, Devi Ray; Sri Muryati, Devi Ray Yuniawati, Erlita Verdia Mutiara, Mutiara, Erlita Verdia; Sri Muryati, Devi Ray Yuniawati, Erlita Verdia Mutiara |
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| Format: | Article application/pdf eJournal |
| Bahasa: | ind |
| Terbitan: |
STIFAR - Sekolah Tinggi Ilmu Farmasi
, 2013
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| Online Access: |
http://journal.stifar.ac.id/ojs/index.php/js/article/view/37 |
Daftar Isi:
- Antioxidant is a chemical compound that can prevent free radical reactions in the body. Ethanolic extract of ketapang leaves (Terminalia catappa L.) contain some phenolic compounds among others tannin, phenolic acids and flavonoid that can act as antioxidants. The aim of this research is to know the antioxidant activity of the ethanolic extract of ketapang leaves based on linoleanic-thiocyanic method. The determination of the total phenolic flavonoid content was done to know the effect of the total phenolic and flavonoid content against its antioxidant activity. The result of antioxidant activity test based on linoleanic-thiocyanic method showed that the ethanolic extract of ketapang leaves had an antioxidant activity. The activity antioxidant was extract 1%, vitamin E 1%, extract 0.5% and extract 0.1 % respectively. The total phenolic content of the ethanolic extract of ketapang leaves 1% (0.4674%) > extract 0.5% (0.2209%) > extract 0.1% (0.0450%). The total flavonoid content of ethanolic extract of ketapang leaves 1% (0.2932%) > extract 0.5% (0.1419%) > extract 0.1% (0.0290%). Spearman rho correlation test showed that the phenolic compound and flavonoid greatly affects the antioxidant activity of the ethanolic extract of ketapang leaves. Key words : antioxidant, linoleanic-thiocyanic method, total phenolic content, total flavonoid content, Terminalia catappa L.