| abstract |
PROBLEM TO BE SOLVED: To provide a method for producing a plantain extract capable of easily producing a plantain extract containing a useful component derived from plantain at a high concentration. SOVA extract is produced by extracting organic matter with a solid content after water extract of WOW. In the water extraction, water of 90 ° C. or higher is preferably used. In the organic solvent extraction, it is preferable to use an extraction solvent mainly composed of a lower alcohol. The grasshopper extract contains nymphaeol-B, C, preferably nymphaeol-A and / or proporin A in addition to nymphaeol-B, C. Fig. 2 (a) is a water extract obtained by water extraction of the leaves of the wolf, Fig. 2 (b) is a primary extract obtained by extracting the solid content after water extraction with ethanol, and Fig. 2 (c) is a primary extract. The chromatogram when each HPLC analysis of the secondary extract further extracted with the organic solvent with ethanol is shown. [Selection] Figure 2 |