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    Isolasi dan Identifikasi Turunan Senyawa Fenolik dari Daun Caribbean Copper Plant (Euphorbia Cotinifolia L)

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    Date
    2020
    Author
    Purba, Evauli Arta
    Advisor(s)
    Lenny, Sovia
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    Abstract
    Isolation of phenolic compound derived from the Carribean Copper Plant leafs (Euphorbia cotinifolia L.) has been carried out through several stages, namely maceration extraction with methanol solvent followed by extraction of partitions with n-hexane solvent. Then the methanol extract is added with ethyl acetate and filtered. Ethyl acetate extract was separated by column chromatography with chloroform eluent: methanol 90:10; 80:20; 70:30; 60:40 v / v. The fraction obtained was preparative thin layer chromatography and produced a 8 mg greenish amorphous solid with Rf = 0.36 with eluent chloroform: ethyl acetate (80:20) v / v. Furthermore the compound obtained were analyzed by UV-Visible Spectrophotometer, Infrared Spectrophotometer (FT-IR) and Proton Core Magnetic Resonance Spectrophotometer (1H-NMR). Spectroscopic data showed that the phenolic compound derived from methyl gallate
     
    Isolasi senyawa fenolik yang terdapat pada daun Carribean Copper Plant (Euphorbia cotinifolia L.) telah dilakukan melalui beberapa tahap yaitu ekstraksi maserasi dengan pelarut metanol yang dilanjutkan dengan ekstraksi partisi dengan pelarut n-heksana. Kemudian ekstrak metanol ditambahkan dengan etil asetat dan disaring. Ekstrak etil asetat dipisahkan dengan kromatografi kolom dengan eluen kloroform : metanol 90:10; 80:20; 70:30; 60:40 v/v. Fraksi yang diperoleh dilakukan kromatografi lapis tipis preparatif dan menghasilkan padatan amorf berwarna kehijauan sebanyak 8 mg dengan harga Rf = 0,36 dengan eluent kloroform : etil asetat (80:20) v/v. Selanjutnya senyawa yang diperoleh dianalisis dengan Spektrofotometer UV-Visible, Spektrofotometer Inframerah (FT-IR) dan Spektrofotometer Resonansi Magnetik Inti Proton (1H-NMR). Berdasarkan data spektroskopi maka senyawa hasil isolasi diduga merupakan turunan senyawa fenolik dari metil galat.

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    http://repositori.usu.ac.id/handle/123456789/31634
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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV