| 摘要 |
NEW MATERIAL:A compound shown by the formula. USE:A quality preservative useful in the fields of foods, cosmetics, drugs, stock raising and fisheries since the compound has both antioxygenic action and antimicrobial action and is tasteless and odorless. PREPARATION:Licorice root or a water extracted residue thereof (e.g. residue after extraction of glycyrrhizin from Licorice root) is immersed in an organic solvent such as methanol, acetone, petroleum ether, benzene or ethyl acetate, heated under reflux or immersed in the organic solvent at normal temperature, the solvent is distilled away from the obtained extracted solution, the extract is dissolvent in a lower aliphatic alcohol and subjected to chromatography using silica gel to give a compound shown by the formula. |
