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目的:对鄂西北地区白及多糖的含量进行测定,为鄂西北地区白及的规范化种植提供依据。方法:采用水提醇沉法提取白及多糖,以蒽酮-硫酸试剂为显色剂,采用紫外分光光度法测定多糖含量。结果:不同产地白及中多糖含量有明显差异。结论:该方法简便,准确,为评价不同产地的白及品质提供科学依据。
Objective: To determine the content of white and polysaccharides in the northwestern Hubei Province, and to provide the basis for the standardization cultivation of Baixi and Northwest Hubei Province. Methods: Water and ethanol precipitation method was used to extract white and polysaccharides, anthrone - sulfuric acid reagent was used as color reagent, and polysaccharide content was determined by ultraviolet spectrophotometry. Results: The contents of white and medium polysaccharides in different producing areas were significantly different. Conclusion: The method is simple and accurate, and provides a scientific basis for evaluating whiteness and quality of different producing areas.