| abstract |
An insect-repellent or insecticidal composition comprising an extract or an organic solvent fraction of oak vinegar as an effective ingredient, is provided. The composition comprising extract or organic solvent fraction of oak vinegar as an effective ingredient has superior insect-repellent or insecticidal activities against lasioderma serricorne , which damages tobacco, grains, paper or clothes, reticulitermes speratus kyushuensis Morimoto , which chews the woods from within, or sitophilus oryzae , which has strong tolerance to insecticides, and therefore, can be applied efficaciously as an insect-repellent or insecticidal composition to conserve wooden furniture, an old house, or many organic cultural heritages. |