Fig. 4
From: Preparation, structural characterization and in vitro activity of ginger polysaccharide
Chromatograms for determination of molecular weight of ginger polysaccharide, red line: multi-angle laser light scattering signal; blue line: difference signal; black line: molecular weight fitted from the two signals (a). Ion chromatogram for determination of monosaccharide fraction of ginger polysaccharide. The mathematical relationship between the target monosaccharides and their peak areas was obtained by using the concentration of the standard monosaccharides as the horizontal coordinate and the peak area of the standard as the vertical coordinate. The content ratio of the target monosaccharides in the unknown ginger polysaccharide samples was calculated according to the peak area of the corresponding monosaccharides after complete hydrolysis (b). SEM of ginger polysaccharide, the surface structure of ginger polysaccharide samples was observed under the conditions of magnification to 2 k (20 μm), 5 k (10 μm) and 10 k (5 μm) (c)