Nazulis Z
Jurusan Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Padang, Jl. Prof. Dr.Hamka Padang

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Isolasi dan Karakterisasi Flavonoid dari Daun Kapuk (Ceiba pentandra L.) Putri Diana; Nazulis Z; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.714 KB) | DOI: 10.24036/p.v2i2.3035

Abstract

Have been done the isolation of flavonoids from the leaves of the kapok (Ceiba pentandra L.) in Chemical Research Laboratory, Faculty of mathematics ande Natural Sciences of the State University of Padang. This research aims to isolate and to know the characteristics of the flavonoid compounds from the leaves of kapok. Method of insulationus is maceration with methanol, followed by oil with n-hexane and ethyl acetate. Separation of the ethyl acetate fraction by coloumn chromatography using silica, eluen used ethylacetate : methanol in SGP. Test the purity of the insulation is done with KLT and melting point. Flavonoids obtained pure white-brownish powder with melting point range 263,3-263,8 0C. Test result with 10% NaOH color reagents, concentrated H2SO4 andMg-HCl showed the presence offlavonoids. Results test KKt2A bares stain is at regional aglikon flavon. The data analysis spectra IR showed the groups –OH ether, C=C aromatis and carbonyl C=O. While of spectra uv-vis the presence of a cluster of -OH on C-3. From the data up allegedly flavonoid the result of isolation is a flavone with a cluster of –OH on C-3 namely 3-hidroksiflavon.
Isolasi dan Karakterisasi Flavonoid dari Kulit Buah Manggis (Garcinia mangostana L.) Sabariah Sabariah; Nazulis Z
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.679 KB) | DOI: 10.24036/p.v2i2.3037

Abstract

Have been done the isolation of flavonoids of the fruit hulls of mangosteen (Garcinia mangostana L.) in theChemistry Research Laboratory, Faculty of Mathematics and Sciences, State University of Padang. This research to isolate and know the characteristics of the compound flavonoid of the fruit hulls of mangosteen. Isolation method was used macerated with methanol, and followed by fractionation with n-hexane and ethyl acetate. Separation of ethyl acetate fraction by column chromatography using silica, ethyl acetate eluent used: methanol in SGP. Isolation purity test results performed by TLC and melting point. Pure flavonoids obtained as a yellow amorf 0.0012 g with a melting point range from 279.8 to 280.7˚C. Color reagent test results with10% NaOH, concentrated H2SO4, and Mg-HCl showed the presence of flavonoids. The test results showed stains KKt-2A is in the region aglycone: flavonols. From the data analysis,IR spectra showed the presence of the-OH, C-O-C ether and aromatic C=C. While the UV-Vis spectra showed the presence of a cluster of -OH on C-4’. From the above data allegedly isolated flavonoids is aflavonol with the-OH at C-4'.