| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject inhibitor having strongα-glucosidase inhibitory activity, being readily taken by making the inhibitor include a plant belonging to the family Compositae as an active ingredient. SOLUTION: This inhibitor contains a plant belonging to the family Compositae as an active ingredient. For example, chamomile, burdock, Chrysanthemum coronarium, seed of sunflower, etc., may be cited as the plant belonging to the family Compositae and chamomile is preferable. Though the plant belonging to the family Compositae is used in an ordinary state, further dried and powdered or ground in water into a slurried state and the slurried plant may show glucosidase inhibitory activity, an extract obtained by using water and/or an alcohol preferably provides strongerα-glucosidase inhibitory activity. An extract obtained by using a mixed solution of water and an alcohol is especially preferable. Ethanol is preferable as the alcohol. The weight ratio of water/the alcohol is preferably 1/100 to 100/1, more preferably 1/50 to 50/1.
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