Showing papers on "Prallethrin published in 2009"

Biocidal potential of clove oils against Aedes albopictus - A comparative study

Abstract: The first phase of the study involved evaluation of leaf and bud oils of clove, Syzygium aromaticum for their biocidal (i.e. ovicidal and larvicidal) activity against Aedes albopictus. Eggs and fourth instar larvae were exposed to different concentrations of the oils to investigate their comparative efficacy against the target mosquito species. In the second phase of the study, biocidal activity of ‘test formulation’ derived from the leaf oil and commercial mosquitocide, Prallethrin were estimated by the same method to compare the efficacy of the former with popular mosquitocides. Mortality data were analyzed by a computerized Log-Probit analysis (StatsDirect). Ovicidal assay of the oil samples recorded EC50 values of 0.37 and 2.0 mg/ml respectively for leaf and bud oil. Larvicidal assay showed LC50 and LC95 values of leaf oil as 5.3 and 7.03 mg/ml respectively, while bud oil recorded LC50 and LC95 values of 17.84 and 23.99 mg/ml, respectively. The ‘test formulation’ recorded EC50 value of 1.63 mg/ml, LC50 of 3.67 mg/ml and LC95 of 13.49 mg/ml respectively, indicating levels comparable to that of prallethrin. Third phase of the study involved chemical characterization of the oil samples using GC-MS. Eugenol constituted the major component of both the oils. The study demonstrated the potential of clove oil as a biocide against A. albopictus and warrants further standardization of the ‘test formulation’

Novel insecticide for repelling and killing bugs

Abstract: The invention discloses novel insecticide for repelling and killing bugs, which takes chlorine fluorine ethofenprox as the active ingredient. Compared with phenothrin, dectrorotation empenthrin, and prallethrin with the same dosage respectively, the pesticide effect is over 15 times, while the cost is under 1/3; the pesticide effect of the insecticide is basically equal to that of dimefluthrin, however, the selling price of the chlorine fluorine ethofenprox is about 1/3 of that of the dimefluthrin. Compared with the prior art, the novel insecticide for repelling and killing bugs has the advantages of high pesticide effect of the active ingredient, smaller dosage and lower unit price, thus having good performance price ratio.

Prallethrin And Status- A Rare Association

Abstract: INTRODUCTIONMosquito repellents marketed as vaporizers contain pyrethroids. Most data regarding toxicity of pyrethroids are gathered from dermal or inhalational absorption. Toxicity profile following oral intake is scarcely reported. This is the first case report following oral ingestion of prallethrin. CASE REPORTA 19 year old male presented to the ER in status epilepticus. Initial attention to ABC was given. He was managed in the ICU requiring mechanical invasive ventilation. No cause for his status could be determined after all investigations. It was on review of history with the patient later that the cause was determined. He had ingested an entire bottle of liquid mosquito repellent vaporizer after a domestic altercation. Patient has been symptom free on follow up off anti-epileptics.DISCUSSIONMosquito repellents contain pyrethroids which act on sodium channels and cause hyperexcitiability of neurons. There are no known antidotes. Treatment is symptomatic.