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RP-HPLP法测定果脯中甘草苷和甘草酸的含量

作  者:
张萍;马银海;郭亚东;马涛;熊春媚;杨玉婷
单  位:
云南师大附中;昆明师范高等专科学校化学系;昆明医学院药学院
关键词:
高效液相色谱法;果脯;甘草苷;甘草酸;限量
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- C_(18)(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。
译  名:
Determination of Liquiritigenin Contents and Glycyrrhizic Acid in Preserved Fruit by RP-HPLC
作  者:
ZHANG Ping~1 MA Yin-hai~(2,*) GUO Ya-dong~1 MA Tao~2 XIONG Chun-mei~1 YANG Yu-ting~3 (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)
关键词:
HPLC;;preserved fruit;;liquiritigenin;;glycyrrhizic acid;;dose limited
摘  要:
Object:To establish a RP-HPLC method for the determination of liquiritin and glycyrrhizic acid in preserved fruit. Methods A LiChrospher RP-C_(18)(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.

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