Polysaccharides from Ligusticum chuanxiong Analysis of mineral drug montmorillonite by IR spectra Chemical studies on two acidic polysaccharides from Salvia chinensis Studies on structure characteristic of polysaccharide P1A from Dicliptera chinensis Isolation and Structural Analysis of an Acidic Polysaccharide from Astragalus membranaceus (Fisch.) Bunge Study on hydrolysis kinetics of ginsenoside-Ro in alkaline medium and structural analysis of its hydrolyzate Structures and bioactivity of polysaccharides from Isatidis Radix A Novel Plywood Adhesive Synthesized by Phenol-Formaldehyde Crosslinking Alkaline Chinese Fir Liquid Screening of Exopolysaccharide-producing Strains and Structural Analysis of the Exopolysaccharides