ISOLASI KARAKTERISASI DAN UJI AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOID DARI KULIT BATANG TUMBUHAN GAMBOGE (Garcinia xanthochymus)

KIRANA, AMANDA YUDHA AYU and Muharni, Muharni and Elfita, Elfita (2012) ISOLASI KARAKTERISASI DAN UJI AKTIVITAS ANTIOKSIDAN SENYAWA FLAVONOID DARI KULIT BATANG TUMBUHAN GAMBOGE (Garcinia xanthochymus). Undergraduate thesis, Sriwijaya University.

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Abstract

Isolation, characterization and antioxidant activity assay flavonoid compound from methanol extract of the stem bark gamboge {Garcinia xanthochymus) has been done. The extraction was done by maceration, separation and purification of isolated compound by chromatography technique. Antioxidant activity assay from isolation compound used DPPH (1,1 diphenylpycrii hidrazyl) method with variated concentration J 000, 500, 250, 125, 62,5, 31,5, 15,625, and 7,812 ppm. Isolated compound was yellow crystal with melting point 300-301 °C. The structure of this compound was determined based on spectroscopic data such as including IR, UV, NMR 1-D, NMR 2D and compared with reported data. Based on spectral data analysis could be concluded that isolated compound is biflavonoid, (+) morelloflavon with molecule formula C30H20O11. This compound showed that active as antioksidant with [C50 26,7 ppm.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Garcinia xanthochymus, flavonoid, (+) morelloflavon, antioxidant
Subjects:	Q Science > QD Chemistry > QD241-441 Organic chemistry
Divisions:	08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1)
Depositing User:	Mrs Furika Furika
Date Deposited:	15 May 2022 07:20
Last Modified:	15 May 2022 07:20
URI:	http://repository.unsri.ac.id/id/eprint/69938

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