Abstract: A hematophagous arthropod repellent composition includes 3,4-dimethoxybenzaldehyde or vanillin acetate as an effective ingredient. The repellent composition is against hematophagous arthropods which transmit diseases to animals including humans or directly cause discomfort or stress by bloodsucking. The hematophagous arthropod repellent composition not only has excellent repellency against hematophagous arthropods such as mosquitoes and ticks but also has long-lasting repellency, and thus it may be used as a hematophagous arthropod repellent for protecting animals including humans.

Abstract: A hematophagous arthropod repellent composition includes 3,4-dimethoxybenzaldehyde or vanillin acetate as an effective ingredient. The repellent composition is against hematophagous arthropods which transmit diseases to animals including humans or directly cause discomfort or stress by bloodsucking. The hematophagous arthropod repellent composition not only has excellent repellency against hematophagous arthropods such as mosquitoes and ticks but also has long-lasting repellency, and thus it may be used as a hematophagous arthropod repellent for protecting animals including humans.

Abstract: The present invention relates to an insect repellent isolated from Foeniculum vulgare fruit, and more particularly, to an insect repellent comprising one or more compounds selected from the group consisting of fennel oil which is isolated from Foeniculum vulgare fruit, (+)-fenchone and E-9-octadecenoic acid. The fennel oil, (+)-fenchone and E-9-octadecenoic acid of the present invention are provided as insect repellent components due to their lack of toxicity to people.

Abstract: An insecticide composition is isolated from Paeonia suffruticosa, Cnidium officinale, Cinnamomum cassia, mustard (Brassica juncea) and horseradish (Cholearia aroracia) by using methanol or by elution with a solvent including hexane and ethyl acetate. The composition can be used to eradicate house dust mites and insects found in stored products.

Abstract: The present invention relates to an insecticidal composition isolated from plants, and more particularly, to insecticide composition comprising Paeonia suffruticosa, Cnidium officinale, Cinnamomum cassia, cinnamon (the stem bark of C. cassia), mustard (Brassica juncea) and horseradish (Cholearia aroracia). Also, the present invention provides insecticidal compounds including trans-cinnamaldehyde, cinamyl alcohol, salicylaldehyde, allyl isothiocyanate and butyl isothiocyanate.