Journal
CARBOHYDRATE POLYMERS
Volume 132, Issue -, Pages 67-71Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.05.059
Keywords
Rhynchosia minima; Polysaccharide; Purification; Anticancer
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Funding
- Macao Science and Technology Development Fund [074/2013/A]
- Research Fund of University of Macau [MYRG107 (Y1-L3)-ICMS13-HCW, MRG013/HCW/2014/ICMS, MYRG2015-00081-ICMS-QRCM]
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Three novel acidic polysaccharides termed PRM1, PRM3 and PRM5 were purified from Rhynchosia minima root using DEAE-52 cellulose and sephadex G-150 column chromatography. Their structures were characterized by ultraviolet (UV) and Fourier transform infrared (FTIR) spectrometry, gel permeation chromatography (GPC), gas chromatography-mass spectrometry (GC-MS), and differential scanning colorimeter (DSC) analysis. The uronic acid contents of PRM1, PRM3 and PRM5 were 30.7%, 12.7% and 47.7%, respectively. PRM1 (143.2 kDa), PRM3 (105.3 kDa) and PRM5 (162.1 kDa) were heteropolysaccharides because they were composed of arabinose, mannose, glucose and galactose. Their enthalpy values were 201.0, 111.0 and 206.8 J/g, respectively. PRM3 and PRM1 exhibited strong in vitro anticancer activity against lung cancer A549 and liver cancer HepG2 cells in a dose-dependent manner. These findings suggested that PRM1 and PRM3 could be potentially developed as natural anticancer agents. (C) 2015 Elsevier Ltd. All rights reserved.
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