| 摘要 |
PURPOSE:To readily and safely extract and isolate natural jasmine acid in a short time and a low cost by suspending plant raw material and/or microorganism containing natural jasmine acid in a lower alcohol and blowing steam into the suspension. CONSTITUTION:A plant raw material (e.g. Jasminum officinale var. grandiflorum Kobski or Jasminum sanbac) and/or microorganism (e.g. chlorella) containing natural. jasmine acid is suspended in >=90V/V% 1-4C alcohol and adjusted to pH2-4, then steam is continuously blown into the suspension to attain <=70V/V% final concentration of alcohol. Next, an inert gas is blown instead of steam and residual alcohol is distilled out, then residual moisture is removed by freeze- drying to obtain a viscous substance containing jasmine acid, thus purified to afford the aimed jasmine acid. Said method is safe because of requiring a large amount of organic solvent. Natural jasmine acid has plant growth- controlling action and is useful as cosmetic or spice of food. |
