Physical, Chemical and Structural Analysis of Phellinus Igniarius Polysaccharides

This paper studied the physical, chemical properties and structure of phellinus igniarius polysaccharides (PIPS). PIPS is negative on iodine potassium iodide solution test, positive on a-naphthol reaction, and negative on Fehling reagent test. Viscosity of exopolysaccharide (EPS) and intracellular polysaccharides (IPS) at 25 degrees C was 0.85 dL/g and 1.20 dug respectively. Column chromatography analysis separated 8 constituents from IPS, while 2 constituents were separated from EPS. The monosaccharide compositions of some of these constituents were further investigated. Results from gel permeation chromatography showed that IPS had 9 constituents and EPS had 4 constituents. The molecular weights of the constituents were determined.