Herbs to repel mosquitoes Dengue Fever Villain
Mosquitoes are important vectors of disease, including Aedes mosquitoes. Which are the vectors for dengue fever. Anopheles mosquitoes are vectors of malaria. Nuisance mosquitoes carry encephalitis. The Aedes mosquito and many other mosquito species are carriers of lymphatic filariasis. That is still a problem in tropical countries. Including Thailand.
Which has weather conditions suitable for spreading the species. Therefore, both the source and the destruction of mosquitoes must control to prevent the spread of disease. Preventing mosquito bites is another popular method. Therefore, chemicals that have the effect of repelling mosquitoes use. Most of them are synthetic and are harmful to humans and other living things. including destroying the environment. Report from ทางเข้า ufabet https://ufabet999.com
Plants in the genus Cymbopogon.
Essential oils from plants in the genus Cymbopogon include various types of lemongrass. Effective against many types of mosquitoes such as Anopheles mosquitoes, Aedes mosquitoes and nuisance mosquitoes.
- Citronella (Cymbopogon nardus (L.) Rendle)
The mosquito repellent effect of citronella oil containing the important. Ingredients citronella, geraniol and citronellol in the form of a cream has been studied. It was found that the formula containing 17% citronella oil protected against Aedes mosquitoes for approximately 3 hours. The cream containing 14% citronella oil reduce the number of annoying mosquitoes. That came to roost within 1 hour after applying the cream. In addition, ethanol extract of citronella mixed with olive oil can repel Aedes and nuisance mosquitoes for 2 hours. Creams containing essential oil from citronella leaves at concentrations of 25, 2.5 and 5.0% protect against Anopheles mosquitoes for approximately 2 hours. While the concentration of 10% gives results for more than 4 hours. - Lemongrass (Cymbopogon citratus (DC.) Stapf)
Lemongrass oil in liquid paraffin, 20 and 25% concentration, has a 100% protective effect against Aedes mosquitoes in the first 1 hour and decreases to approximately 95% within 3 hours. Product preparation 15% lemongrass oil in the form of cream. And ointment has found to effective in protecting against mosquito bites. The properties of the product components affect the release of essential oils. and has an effect on the effectiveness of protecting against mosquitoes as well Lemongrass essential oil containing 2 mg/cm2 of geraniol was able to reduce mosquito bite rates by 10, 15, and 18% at 1, 2, and 3 hours, respectively. Compared to not applying essential oil from lemongrass. A bath soap containing 0.1% citronella oil, 0.5% lemongrass oil, and 1% neem oil can repel mosquitoes over a period of 8 hours.
Plants genus Ocimum.
A comparative study of the effects of essential oils from 5 types of this group of plants: basil (O. americanum L.), basil (O. basilicum L.), basil (O. africanum Lour. ExH), cumin. or elephant basil (O. gratissimum L.) and holy basil (O. tenuiflorum L.) have been found to have the effect of both killing larvae and repelling Aedes mosquitoes. The killing effect of essential oils on Aedes mosquito larvae. Arranged as follows: basil > cumin > holy basil > basil = basil, with the concentration of essential oils.
That are 90% effective at protecting against mosquitoes (EC90) equal to 113, 184, 240, 279, and 283 ppm, respectively, for the repellent effect. Mosquitoes of essential oil at a concentration of 10% were found to have the strongest effect on elephant basil. Protects against mosquito bites for 135 minutes, followed by holy basil and basil, which protects against mosquito bites for 105 and 75 minutes, respectively, while the jelly overtakes And basil gives the least effect in only 15 minutes. In addition, products in the form of sticks, creams and sprays that contain basil oil and basil. Effective in repelling Aedes mosquitoes and protecting against mosquitoes. Plants in the genus Citrus.
- Bergamot (Citrus hystrix DC.)
Essential oil from Bergamot has a mosquito repellent effect for 95 minutes, and mosquito repellent preparations containing 25 and 50% concentration of Bergamot oil can repel mosquitoes for 30 and 60 minutes, respectively. Essential oil. Mixed from 5% Kaffir lime and 1% from Chinghao flowers (Artemisia annua L.), protects against Aedes mosquitoes, Anopheles mosquitoes, and nuisance mosquitoes for 180 minutes in the laboratory. In the same concentration, it can protect against Aedes mosquitoes and tiger mosquitoes for 180 minutes and annoying mosquitoes for up to 240 minutes in the field. - Citrus limon (L.) Burm.f.)
Essential oil from guava lime is 88 times more effective at repelling Anopheles mosquitoes than synthetic chemicals. N,N-diethyl-3-methylbenzamide