Results 161 to 170 of about 6,049,161 (214)

Screening of medicinal plants of rwanda for acaricidal activity

Journal of Ethnopharmacology, 1985
A series of 108 samples from 42 medicinal plants of Rwanda have been screened for acaricidal activity against the female tick Rhipicephalus appendiculatus. Two plants, Solanum dasyphyllum (fruits) and Neorautanenia mitis (roots) showed apparent acaricidal activity in the petroleum ether fraction.
L, Van Puyvelde, D, Geysen, F X, Ayobangira, E, Hakizamungu, A, Nshimiyimana, A, Kalisa   +5 more
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The acaricidal activity and mechanism of eugenol on Psoroptes cuniculi

Veterinary Parasitology, 2019
In this study, the acaricidal effect of eugenol was measured and its mechanism of action investigated. The results showed that eugenol possessed the effect of killing Psoroptes cuniculi, and could regulate the mRNA expression of glutathione S-transferase (GST), catechinic acid (Ca) and thioredoxin (Trx).
Wuren, Ma, Yunpeng, Fan, Zengyuan, Liu, Yuanjie, Hao, Yuan, Mou, Yingqiu, Liu, Weimin, Zhang, Xiaoping, Song   +7 more
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In vitro evaluation of acaricidal and fungicidal activity of the house dust mite acaricide, Allerbiocid

Clinical & Experimental Allergy, 1992
SummaryThe acaricidal and fungicidal activities of a new acaricide Allerbiocid, formulated for the control of house dust mites, were investigated. The components of the Allerbiocid formula are: 3% benzyl benzoate (acaricidal and fungicidal), 1% tannic acid (protein denaturant) and 0.5% Tween (surface active agent) in 70% isopropyl alcohol (antiseptic).
B J, Hart, B, Guérin, N, Nolard
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Synthesis of novel quinolinomatrine derivatives and their insecticidal/acaricidal activities

Bioorganic & Medicinal Chemistry Letters, 2018
In continuation of our program to discover natural product-based pesticidal agents, a series of new quinolinomatrine derivatives were prepared. Especially three-dimensional structures of five compounds were unambiguously determined by single-crystal X-ray diffraction.
Jiulin, Huang, Min, Lv, Sunita, Thapa, Hui, Xu   +3 more
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Fentrifanil: A diarylamine acaricide with potent mitochondrial uncoupling activity

Biochemical and Biophysical Research Communications, 1980
Abstract The acaricide fentrifanil (2′-chloro-2,4-dinitro-5′,6-di(trifluoromethyl)diphenylamine) is a new and very potent type of uncoupler of respiratory chain phosphorylation. It stimulates oxygen consumption, reduces the respiratory control index, lowers the ADP O ratio and releases the oligomycin block of ADP-stimulated respiration in ...
S M, Nizamani, R M, Hollingworth
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Factors influencing the acaricidal activity of flucycloxuron

Entomologia Experimentalis et Applicata, 1993
AbstractContact activities of flucycloxuron on immature stages of the two‐spotted spider mite (Tetranychus urticae (Koch)) and the European red mite (Panonychus ulmi (Koch)) gradually decrease in the successive developmental stages. The levels of contact activity of flucycloxuron on larvae and protonymphs of T. urticae and P. ulmi are of the same order.
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Synthesis, Acaricidal Activity, and Structure–Activity Relationships of Pyrazolyl Acrylonitrile Derivatives

Journal of Agricultural and Food Chemistry, 2016
A series of novel pyrazolyl acrylonitrile derivatives was designed, targeting Tetranychus cinnabarinus, and synthesized. Their structures were identified by combination of 1H NMR, 13C NMR, and MS spectra. The structures of compounds 18 and 19 were further confirmed by X-ray diffraction. Extensive greenhouse bioassays indicated that compound 19 exhibits
Haibo Yu, Yan Cheng, Man Xu, Yuquan Song, Yanmei Luo, Bin Li   +5 more
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Acaricidal Potentials of Active Properties Isolated from Cynanchum paniculatum and Acaricidal Changes by Introducing Functional Radicals

Journal of Agricultural and Food Chemistry, 2013
This study evaluated the acaricidal activities of acetophenone and its derivatives for their potentials as natural acaricides using an impregnated fumigant bioassay against Dermatophagoides spp. and Tyrophagus putrescentiae . On the basis of the LD50 values against D.
Min-Gi, Kim, Ji-Yeon, Yang, Hoi-Seon, Lee   +2 more
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Synthesis and acaricidal activity of strobilurin-pyrimidine derivatives

Chinese Chemical Letters, 2014
Abstract Pyriminostrobin, a new acaricide, was discovered in our previous studies. Because introducing fluorine into organic compounds can increase bioactivity, pyriminostrobin was modified as a series of strobilurin-pyrimidine derivatives for biological screening. The compounds were characterized by 1 H NMR, MS and elemental analysis.
Bao-Shan Chai, Chang-Ling Liu, Hui-Chao Li, Shao-Wu Liu, Ying Xu, Yu-Quan Song, Jun-Biao Chang   +6 more
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Acaricidal and insecticidal activities of three synthetic oxazolidinones

Pesticide Science, 1991
AbstractThe effects of three synthetic 2‐oxazolidinones were investigated on two arthropod pests: (1) Boophilus microplus (Canestrinii), the Southern cattle tick; and (2) Cylas formicarius elegantulus (Summer), a sweet potato weevil.
Ralph R. Roberts, Lawrence A. D. Williams   +1 more
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