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A novel alkaline-soluble polysaccharide (PVPS-3), obtained from Patrinia villosa by 9.0% NaOH extraction, was fractionated by anion-exchange and gel filtration chromatography. Using Fourier infrared spectrometry, gas chromatography, methylation, and NMR, we determined PVPS-3 to be a 2.61 kDa heteropolysaccharide composed of L-arabinose, D-mannose, D-glucose, and D-galactose in a ratio of 2.3:1.1:4...
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