Regulation of Laminaria Polysaccharides with Different Degrees of Sulfation during the Growth of Calcium Oxalate Crystals and their Protective Effects on Renal Epithelial Cells

Figure 1

Characterization of SLPs with different -OSO₃^- content. (a, b) GC-MS analysis. (c) FT-IR spectrum. (d) The absorption peak intensity of S=O asymmetric stretching vibration and C-O-S stretching vibration varies with the -OSO₃^- content of polysaccharides. (e) ¹H NMR spectrum of LP0. (f) ¹H NMR spectrum of SLP2. (g) ¹³C NMR spectrum of LP0. (h) ¹³C NMR spectrum of SLP2. (i) LP0 sulfation reaction equation.

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