Acaricidal activity of oregano oil and its major component, carvacrol, thymol and p-cymene against Psoroptes cuniculi in vitro and in vivo
文献类型: 外文期刊
第一作者: Shang, Xiaofei
作者: Shang, Xiaofei;Wang, Yu;Zhou, Xuzheng;Guo, Xiao;Dong, Shuwei;Wang, Dongsheng;Zhang, Jiyu;Pan, Hu;Miao, Xiaolou;Zhang, Yu
作者机构:
关键词: Oregano oil;Carvacrol;Thymol;Acaricidal activity;Psoroptes cuniculi
期刊名称:VETERINARY PARASITOLOGY ( 影响因子:2.738; 五年影响因子:2.951 )
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收录情况: SCI
摘要: Oregano oil possesses marked antioxidant and antimicrobial activity and is widely applied in animal husbandry. In the present study, we aimed to investigate the acaricidal activities of oregano oil and its major component, carvacrol, thymol and p-cymene against Psoroptes cuniculi in vitro and in vivo. The results revealed that oregano oil exhibited significant acaricidal effects against P. cuniculi that were dose- and time-dependent response. In in vitro test, concentrations of 0.05% and 0.02% (v/v) killed all of the mites within 1 h and 6 h, respectively. Moreover, 0.1 mg/ml(w/v) carvacrol, 0.2 mg/ml(w/v) thymol and 1% p-cymene (v/v) also possessed marked acaricidal activities, and compared with the control group, elicited mean mortalities of 84.00%, 96.00% and 66% at 24 h, respectively. The median lethal times (LT50) against P. cuniculi of the concentrations of 0.02%, 0.01% and 0.005% (v/v) of oregano oil, thymol, carvacrol and p-cymene were 2.171 h, 11.396 h, 26.102 h, and 4.424 h, 8.957 h and 15.201 h, respectively. Meanwhile, twenty naturaly infested rabbits were used to four homogeneity groups: negative control (without treatment), positive control (treated with ivermectin), group treated with 1% of oregano oil and other group with 5% of oregano oil. All the treatments were topically. After the treatment of 1% and 5% oregano oil, the P. cuniculi were completely eliminated in the rabbits, and at the end of the test (day 20), the rabbits of all treatment groups exhibited favorable mental and physical statuses. These results indicated that oregano oil could be widely applied as a potential acaricidal agent in the treatment of animal acariasis in the future. (C) 2016 Elsevier B.V. All rights reserved.
分类号: S85
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