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Jurnal Periodic Jurusan Kimia UNP
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology
Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 21 Documents
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Search results for , issue "Vol 2, No 2 (2013)" : 21 Documents clear
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'.

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