Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal JURNAL KIMIA SAINS DAN APLIKASI
Kautsar Elvira
Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University Jl. Prof. Soedarto, SH., Tembalang, Semarang
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Isolation of Flavonoid Compounds from Eceng Gondok (Eichhornia crassipes) and Antioxidant Tests with DPPH (1,1-Diphenyl-2-Picrylhydrazyl) Method Kautsar Elvira; Enny Fachriyah; Dewi Kusrini
Jurnal Kimia Sains dan Aplikasi Vol 21, No 4 (2018): volume 21 Issue 4 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3100.453 KB) | DOI: 10.14710/jksa.21.4.187-192

Abstract

The research had been conducted of the isolation of flavonoid compounds from water hyacinth plants (Eichhornia crassipes) and antioxidant activity test by DPPH (1,1-diphenyl-2-picrylhydrazyl) method. This research starts from maceration of water hyacinth with ethanol solvent. Ethanol extract was hydrolyzed with HCl. Flavonoid separation is carried out by column chromatography and preparative thin layer chromatography. The obtained isolates were analyzed by UV vis spectrophotometer and FTIR spectrophotometer. Antioxidant activity was carried out by DPPH method. Flavonoid isolates were obtained as heavy as 4.5 mg (0.006%). The results of the analysis of flavonoid isolates A4a with UV vis spectrophotometer appear at a wavelength of 368 nm (band I) and 260 nm (band II). The results of the analysis with FTIR shown that the isolates had functional groups O-H, aliphatic C-H, CH3, C =O, aromatic C = C, and C-O ether, it was suspected that flavonoid isolates had a basic structure of quercetin 7-methyl ether compounds. The results of antioxidant activity test of flavonoid isolates shown IC50 price of 254.66 mg / L
Co-Authors Dewi Kusrini Enny Fachriyah