A study on extracellular polysaccharides from Aspergileae of fungi imperfecti Ⅱ: chemical structure of extracellular polysaccharides from Eupenicillium javanicum

A strain YM31794,producing extracellular polysaccharide,was identified,using the methods of morphology and 18s rDNA sequencing analysis,as Eupenicillium javanicum Thom.The chemical structure of the extracellular polysaccharide from this strain was analysed through the reaction of methyl,Smith’s degradation,thin-layer chromatography,GC-MS chromatography,IR spectrum, 13C-NMR and 1H-NMR.The result indicate that this polysaccharide is a pyranose which is composed of the 1,6-bond linked glucose,1,2-bond linked galact ose and 1,3-bond linked mannose,and 1,2-bond linked glucose on its side chain.