Suci, Wulandari (2020) PENETAPAN KADAR FLAVONOID TOTAL EKSTRAK DAUN LEGETAN (Acmella uliginosa)SECARA SPEKTROFOTOMETRI UV-Vis. Diploma thesis, Sekolah Tinggi Ilmu Kesehatan Nasional.
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Abstract
Indonesia is a country rich in natural resources. Some plants can be used as herbal medicines, one of which is the legeten leaves. Legetan leaves contain flavonoid compounds. Flavonoids have antioxidant properties that acts as a free radical scavenger and it contains a hydroxyl group. This study aims to determine the presence or absence of flavonoid content and determine the total flavonoid leaves contained in legetan leaf extract. Extraction is done using maceration method with 70% ethanol solvent. Extract results are used for qualitative and quantitative analysis.Quercetin used as a standard solution. Qualitative analisys using TLC, Wilstater-Cyanidin method, and qualitative analisys using aqueous NaOH. Quantitative analysis using Visible Spectrophotometry on a wavelength of 428.0 nm and operating time at the 15th minute. The results of qualitative test showed that the extract was positive flavonoids. The average concentrations of total flavonoids was 0,9148% extract with a variation coefficient value of 0,21%.
| Item Type: | Thesis (Diploma) |
|---|---|
| Subjects: | R Medicine > RN Pharmacy and Pharmaceutical Mathematics |
| Depositing User: | Unnamed user with email [email protected] |
| Date Deposited: | 02 Mar 2021 03:59 |
| Last Modified: | 02 Mar 2021 03:59 |
| URI: | http://librepo.stikesnas.ac.id/id/eprint/495 |
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