September 2016 SPDS Book
Background
Summary of current methods used in Aloe composition analysis:
• NMR ‐ quantification of polysaccharides and providing aloe fingerprint for identification; – Quantification of polysaccharides by analysis of the content of acetyl groups; – Quantification of organic acids including acetic acid, lactic acid, malic acid and isocitric acid; • GC – quantification of aloe organic acid, such as acids of lactic, malic, citric, isocitric, etc.; quantification of monosaccharides including existed monosaccharides or hydrolyzed from polysaccharides;
Background
Summary of current methods used in Aloe composition analysis ( cont’d ): • Colorimetric – quantification of aloe polysaccharides by photometric analysis; • GPC – providing fingerprint of aloe polysaccharides and their molecular weight and size; • HPLC – quantification of organic acids, including oxalic, malic, isocitric, lactic, citric, fumaric acid, and isocitric acid lactone; providing aloe fingerprint for identification;
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