Comparison between Sulfuric Acid-phenol and Sulfuric Acid-anthrone Methods Used for Determination of Polysaccharides in Shoots of Aralia elata (Miq.) Seem.

Sulfuric acid-phenol and sulfuric acid-anthrone methods were used to detect polysaccharide content in shoots of Aralia elata（ Miq.） Seem.,and the conversion factor to glucose was measured with refined polysaccharides. Comprehensive evaluation was carried out by linear relationship,precision,reproducibility,stability and recovery rate. The results showed that the linear relationship between glucose concentration and absorbance was good when glucose concentration was0-40 μg/ml,and the average recovery rate was equal to or higher than 97. 00% with good reproducibility（ RSD 〈 1. 60%,n = 5）. It revealed that the two methods were accurate and reliable,and suitable for the determination of polysaccharide content in the shoots of A. elata. Polysaccharide content detected by sulfuric acid-phenol and sulfuric acid-anthrone methods was 19. 31% and 20. 40% respectively.

注射用灰树花倍他葡聚糖的含量测定方法研究

目的建立注射用灰树花倍他葡聚糖的含量测定方法。方法分别采用甲醇提取法、透析法、凝胶过滤法和超滤离心法去除供试品中的辅料后采用硫酸-苯酚法进行含量测定,并将结果与不去除辅料直接采用硫酸-苯酚法,分别以葡萄糖及含处方量甘露醇的葡萄糖制作标准曲线进行含量测定的结果进行比较。结果各种供试品前处理方法在去除辅料时,都会造成灰树花倍他葡聚糖主药的损失,其中超滤离心法操作简便,主药的损失量最小。在不去除辅料的情况下,采用以含处方量甘露醇的葡萄糖制作标准曲线的方法更能真实地反映供试品的含量。结论采用硫酸-苯酚法以含处方量甘露醇的葡萄糖制作标准曲线,可消除辅料的干扰,并具有良好的精密度和重现性,适合于注射用灰树花倍他葡聚糖的含量测定。