Natural products were screened for their insect repellent activity, and carrot seed essential oil gave very high activity in biting repellent/deterrent bioassays. Analysis of the oil revealed the presence of 47 compounds, mainly mono- and sesqui-terpenes. The sesquiterpene, carotol, constituted more than 75% w/w of the oil. In the initial screening, the essential oil gave high biting deterrent activity and high repellent activity comparable to DEET against both Aedes aegypti and Anophies quadrimaculatus species of mosquitoes. The active fraction mainly comprises pure carotol. The essential oil and the pure compound have a potential to be developed and used as effective repellent against mosquitoes.

Natural products were screened for their insect repellent activity, and carrot seed essential oil gave very high activity in biting repellent/deterrent bioassays. Analysis of the oil revealed the presence of 47 compounds, mainly mono- and sesqui-terpenes. The sesquiterpene, carotol, constituted more than 75% w/w of the oil. In the initial screening, the essential oil gave high biting deterrent activity and high repellent activity comparable to DEET against both Aedes aegypti and Anophies quadrimaculatus species of mosquitoes. The active fraction mainly comprises pure carotol. The essential oil and the pure compound have a potential to be developed and used as effective repellent against mosquitoes.

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.

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.

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.

The instant invention refers to nanosystems comprising nanocomposites for adsorption or support of natural extracts; a process for the preparation thereof; formulations containing thereof, as well as a nanomaterial that adsorbs one or more essential oils in its surface. Specially, one object of the invention is the encapsulation of natural extracts, i.e., essential oils and/or natural pure bioactive compounds and optionally terpenoid, sesquiterpenoid, diterpenoid, sesterterpenoid, triterpenoid, carotenoid, and ricinoid compounds; complementary acids, and polysaccharides; vitamins, and other organic compounds, in mesoporous materials for application in different industries such as food, agricultural, veterinary, aquacultural, pharmaceutical, cosmetic, cleaning, sanitizing, and disinfection industries, as well as in medicine.

The instant invention refers to nanosystems comprising nanocomposites for adsorption or support of natural extracts; a process for the preparation thereof; formulations containing thereof, as well as a nanomaterial that adsorbs one or more essential oils in its surface. Specially, one object of the invention is the encapsulation of natural extracts, i.e., essential oils and/or natural pure bioactive compounds and optionally terpenoid, sesquiterpenoid, diterpenoid, sesterterpenoid, triterpenoid, carotenoid, and ricinoid compounds; complementary acids, and polysaccharides; vitamins, and other organic compounds, in mesoporous materials for application in different industries such as food, agricultural, veterinary, aquacultural, pharmaceutical, cosmetic, cleaning, sanitizing, and disinfection industries, as well as in medicine.

The present invention describes capsule compositions consisting of crosslinked chitosan, beta-glucan or alginate, and encapsulates an environmentally compatible ingestible larvicide, especially larvicidal agents such as essential oils or other ingestible larvicides such as Bacillus thuringiensis which are lethal to the larvae of pest insects, especially mosquito larvae.

The present invention describes capsule compositions consisting of crosslinked chitosan, beta-glucan or alginate, and encapsulates an environmentally compatible ingestible larvicide, especially larvicidal agents such as essential oils or other ingestible larvicides such as Bacillus thuringiensis which are lethal to the larvae of pest insects, especially mosquito larvae.

The present invention describes capsule compositions consisting of crosslinked chitosan, beta-glucan or alginate, and encapsulates an environmentally compatible ingestible larvicide, especially larvicidal agents such as essential oils or other ingestible larvicides such as Bacillus thuringiensis which are lethal to the larvae of pest insects, especially mosquito larvae.