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All Journal The Journal of Pure and Applied Chemistry Research Annales Bogorienses
Andini Sundowo
Research Center for Chemistry, Indonesian Institute of Sciences (LIPI)
Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology

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The Mechanically Extraction Process of Gambier (Uncaria gambier Roxb.) from Limapuluh Kota, West Sumatera and Its Antioxidant activity Galuh Widiyarti; Andini Sundowo; Euis Filailla; Joddy Arya Laksmono
The Journal of Pure and Applied Chemistry Research Vol 9, No 1 (2020): Edition January-April 2020
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jpacr.ub.2020.009.01.509

Abstract

The extraction process from leaves and twigs of gambier (Uncaria gambier Roxb)plant was conducted mechanically by using traditional hydraulic press, conventional screw press, and modified twin-screw press. The leaves and twigs of gambier plant was obtained from traditional farmer in Limapuluh Kota, West Sumatera, Indonesia. The water, ash and catechin contents of the gambier extracts were analyzed based on SNI 01-3391-2000 using spectrophotometry and thermogravimetry method. Antioxidant activity analysis of the extracts was also performed by 1,1-diphenyl-2-picrylhidrazyl (DPPH) method and compared tovitamin C as a standard antioxidant. The analysis results showed that the extracts contain no ash. Meanwhile, the catechin and water contents of the extracts were approximately 50 and 13% thus the extracts were classified as quality gambier 2. Other than that, analysis result of catechin and epicatechin contents of the extracts using HPLC and compared to the reference materials showed that catechins contents of the extracts using traditional hydraulic press, conventionalscrew press, and modified twin-screw press give catechin content in about 94.296-95.030%. However, epicatechin was detected in a trace amount. The antioxidant activity of the extracts were 2.5 times stronger than reference. The IC50 value of 4.37-4.52 µg/mL and was categorized as active antioxidant.
Isolation and Identification of Antiplasmodial Compound from Methanol Extract of Calophyllum bicolor P. F. Steven Jamilah Abbas; Muhammad Hanafi; Nina Artanti; Andini Sundowo; Minarti Minarti; Puji Budi Setia Asih; Din Syafrudin
Annales Bogorienses Vol. 19 No. 2 (2015): Annales Bogorienses
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/ann.bogor.2015.v19.n2.49-56

Abstract

Calophyllum bicolor (Clusiacea) is a big tree from Indonesian rain forest in Palangkaraya, Central Kalimantan. Calophyllum or bintagor is one of many sources of natural bioactive compounds that can be used in the fields of health and pharmaceuticals. The aim of this research was to explore the antiplasmodial activity of methanol extract of Calophyllum bicolor P.F. Steven against Plasmodium falciparum. The methanol extract was purified by colomn chromatography system, hexane – ethyl acetate was used as solvent with increasing polarity. One pure compound was obtained and was elucidated based on the 1H-&13C-NMR and 2D-NMR, [COSY, HMBC and HMQC] data and the isolated compound was identified as xanthone. Methanol extract showed antiplasmodial activity growth inhibition against P. falciparum with IC50 5.2 ppm and the new 5-methoxy trapezifolixanthone compound have maximum inhibition at concentration 0.11 nMol.
Co-Authors Din Syafrudin Euis Filailla Galuh Widiyarti Jamilah Abbas Joddy Arya Laksmono Minarti Minarti Muhammad Hanafi Nina Artanti Puji Budi Setia Asih