Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 9, Issue 4, Pages 571-577Publisher
MDPI AG
DOI: 10.3390/ijms9040571
Keywords
glycyrrhizic acid; glabridin; licorice; extraction; high-performance liquid chromatography
Funding
- National Research Foundation of Korea [R11-2000-068-04003-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The extraction and separation conditions of glycyrrhizic acid and glabridin from licorice were investigated. By changing the different extraction solvents, procedures, times and temperature, the optimum extraction condition was established: the used of ethanol/water (30: 70, v/v) as an extraction solvent, and 60 min dipping time under 50 C. The extracts of licorice were separated and determined by reversed-phase high performance liquid chromatography with a methanol/water (70: 30, v/v, containing 1% acetic acid) as the mobile phase. Under the optimum extraction condition, 2.39 mg/g of glycyrrhizic acid and 0.92 mg/g of glabridin were extracted from Chinese licorice and the recoveries were 89.7% and 72.5% respectively.
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