تعیین مقدار گلیسیریزین و برخی از ترکیبات شیمیایی واریته های شیرین بیان در استان اردبیل

Glycyrrhiza glabra roots contain a compound that is called glycyrrhizin extensively used as natural sweeteners in food products and several pharmaceutical formulations. the main objectives of this study were identification of glycyrrhiza varieties in ardabil province (korayim region) and determination of glycyrrhizin content in root and leaf of identified varieties. moreover, determination of some chemical compounds in leaf of glycyrrhiza varieties was performed. glycyrrhizin content in root and leaf of identified varieties were detected by hplc. some chemical compounds in leaf of glycyrrhiza varieties such as extracted fat, crude protein, ash, fiber and carbohydrate were analysed. two varieties of glycyrrhiza glabra l. were identified in ardabil. the scientific names of these varieties were glycyrrhiza glabra l.var. glandulifera, and glycyrrhiza glabra l.var. glabra. results of glycyrrhizin contents (based on dry matter) showed that glycyrrhizin content in roots of var. glandulifera and var. glabra was %4.34 and %3.29, respectively which were significantly (p < 0.01) different with each other. at the both varieties, the highest content of glycyrrhizin was found in the root hull. the glycyrrhizin content of leaf in var. glandulifera and var. glabra was %0.072 and %0.085, respectively with no significant difference between varieties. moreover, there was no significant difference between leaves of two varieties in measured chemical compounds, but between two stage of early bloom and late bloom, there were significant (p < 0.01) difference between leaves of two varieties in measured chemical compounds (except of ash). in conclusion, the obtained results showed possibility of glycyrrhizin extraction in the root of var. glandulifera in comparison to var. glabra and it's use in food and drug products.