abstract |
(57) [Summary] [Purpose] It is possible to effectively suppress the growth of Streptococcus in the oral cavity. [Structure] Sophora exigua extract belonging to the legume family is used as an active ingredient. The active ingredient is 5,7,2 ′, 4′-tetrahydroxy-8-labandrylflavanone having the following structure, which was isolated from Sophora exigua extract. |