摘要
目的探讨紫云英蜜总糖含量和酸度的测定方法。方法利用紫外分光光度法测定总糖的含量；电位滴定法测定酸度。结果紫云英蜜总糖含量为541mg／g，在26．2～131ug范围内呈良好的线性关系，r=0．998，平均回收率为102．1％，RSD=2．79％。测定紫云英蜜酸度时，避免了因指示剂使用而带来的误差，提高了测定准确度，RSD为0．98％～2．12％。结论该方法简便准确，可靠，可作为紫云英蜜的质量分析方法。
Objective To establish the method for the quantitative determination of total sugar and acidity in milk vetch honey. Methods Ultraviolet spectrophotometry was used to determine the content of total sugar in honey. Potentionmetric titration was used to analyze the total acidity in the honey. Results The total sugar in honey was 541 mg/g which showed a good linear relationship in the range of 26.2 - 131 ug （ r = 0. 998 ）. The average recovery was 102.1% and RSD was 2.79%. Potentiometrie titration was used to control the response end point to avoid indicator errors when the total acidity was determinatd. The aceuracy was improve and RSD was 0.92% -2.27%. Conclusion The method is simple,convenient and reliable which could be used for the quality control.
出处
《药学实践杂志》
CAS
2010年第4期291-292,307,共3页
Journal of Pharmaceutical Practice
关键词
紫云英蜜
总糖
紫外分光光度法
酸度
电位滴定
milk vetch honey
total sugar
UV-spectrophotometer
acidity
potentionmetric titration
