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All Journal Jurnal Periodic Jurusan Kimia UNP
Yustini Ma’aruf
Jurusan Kimia, Universitas Negeri Padang Jln. Prof. Dr. Hamka Air Tawar Padang - Sumatera Barat
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Isolasi dan Karakterisasi Flavonoid dari daun sambang darah (Excoecaria cochinchinensis L) Siska Oktariza; Yustini Ma’aruf; 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 (270.538 KB) | DOI: 10.24036/p.v2i2.3021

Abstract

Flavonoids are greatest a group of phenolic compounds found in nature. One of the plants that contain flavonoids and used as medicine are the leaves sambang darah (excoecaria cochichinensis L). This study aims to isolate and characterize flavonoids from leaves sambang darah (excoecaria cochichinensis L). The method used is maceration using solvents methanol and fractionation with n-hexane and ethyl acetate. Separation was performed by column chromatography with silica gel 60 adsorbent and eluent ethyl acetate: methanol in SGP (Step Gradient Polarity) and recrystallization purification done. From the results obtained by the isolation of flavonoids in the form of brownish yellow solid, it has not obtained pure of flavonoids.
Isolasi dan Karakterisasi Flavonoid dari Daun Belimbing (Averrhoa carambola Linn.L) Rido Ardianto; Yustini Ma’aruf; 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 (265.809 KB) | DOI: 10.24036/p.v2i2.3022

Abstract

Research of isolation and characterization of flavonoids from the leaves of star fruit (Averrhoa carambola Linn.L) has been done. A 393 g of condensed methanol extracts obtained from 5 kg of fresh leaves starfruit. The methanol extract of hot water added, further fractionated successively with n-hexane and ethyl acetate, resulting in a 4000 ml n-hexane fraction and 5000 ml of ethyl asetat. The flavonoid phytochemical test from the fractionation showed negative fraction of n-hexane, ethyl acetate fraction and water fraction flavonoid positive. Results separation by column chromatography ethyl acetate fraction concentrated extract produced 6 fractions, namely fraction A, B, C, D, E and F. Characterization using UV light gives a brown before chromatograms steamed green ammonia and gives a dark brown color after steamed with ammonia. Based on the existing literature is suspected in fraction B contained flavones glycosides, biflavonil or unusual tersulih flavons.
Co-Authors Rido Ardianto Siska Oktariza Sri Benti Etika