食品科学 ›› 2007, Vol. 28 ›› Issue (5): 284-286.

• 分析检测 • 上一篇    下一篇

RP-HPLP法测定果脯中甘草苷和甘草酸的含量

 张萍, 马银海, 郭亚东, 马涛, 熊春媚, 杨玉婷   

  1. 昆明医学院药学院; 昆明师范高等专科学校化学系; 云南师大附中 云南昆明650031; 云南昆明650031; 云南昆明650106;
  • 出版日期:2007-05-15 发布日期:2011-12-31

Determination of Liquiritigenin Contents and Glycyrrhizic Acid in Preserved Fruit by RP-HPLC

 ZHANG  Ping, MA  Yin-Hai, GUO  Ya-Dong, MA  Tao, XIONG  Chun-Mei, YANG  Yu-Ting   

  1. 1.School of Pharmacy,Kunming Medical College,Kunming 650031,China; 2.Department of Chemistry,Kunming Teachers College,Kunming 650031,China; 3.Middle School Attached to Yunnan Normal University,Kunming 650106,China
  • Online:2007-05-15 Published:2011-12-31

摘要: 目的:建立用RP-HPLC法同时测定果脯中甘草苷和甘草酸含量的方法。方法:采用LiChrospher RP- C18(250mm×4.6mm,i.d.5μm)色谱柱,以乙腈-水(1.0%甲酸)为流动相,梯度洗脱,双波长检测。结果:甘草苷在0.21~6.30μg范围内呈良好的线性关系,回归方程为Y=2334.3161X+25.2431(r=0.9999),平均回收率为98.6%,RSD为1.36%(n=9),重复性RSD为0.78%;甘草酸在0.25~7.50μg范围内呈良好的线性关系,回归方程为Y=907.7837X+0.8969(r=0.9999),平均回收率为100.2%,RSD为1.48%(n=9),重复性RSD为1.25%。结论:该方法简便迅速,结果可靠,分离效果好,可作为控制食品中甘草限量的方法。

关键词: 高效液相色谱法, 果脯, 甘草苷, 甘草酸, 限量

Abstract: Object:To establish a RP-HPLC method for the determination of liquiritin and glycyrrhizic acid in preserved fruit. Methods A LiChrospher RP-C18(250 mm×4.6 mm,i.d.5μm)column was used and the mobile phase was acetonitrile-water (1.0% methanoic acid)for gradient elution.The double detection wavelengths were used.Results The linear range of liqulritin is 0.21~6.30μg and regression equation is Y=2334.3161X+25.2431(r=0.9999).The average recovery is 98.6%(RSD=1.36%,n=9) and RSD of reproduction 0.78%.The linear range of glycyrrhizic acid is 0.25~7.50μg and regression equation is Y=907.7837X+0.8969(r=0.9999).The average recovery is 100.2%(RSD=1.48%,n=9)and RSD of reproduction 1.25%. Conclusion:The method is convenient and accurate.It can be used to control the dose limit of glycyrrhiza in similar food.

Key words: HPLC, preserved fruit, liquiritigenin, glycyrrhizic acid, dose limited