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In this study, Astragalus polysaccharides was analysed using high performance liquid chromatography (HPLC) and Fourier transform infrared (FT-IR). Compared with retention time of six standard compounds in HPLC analyses, we found that the polysaccharides were composed of glucose. The absorption bands at 1639 and 1538cm −1 were attributed to the stretching vibration of the C–O bond of carboxyl...
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