1. Evaluation of Acute Toxicity of Essential Oil Of Garlic (Allium sativum) and Its Selected Major Constituent Compounds Against Overwintering Cacopsylla chinensis (Hemiptera: Psyllidae)
- Author
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Hang Zhang, Na Na Zhao, Wang Peng Shi, Cheng Zhou, Xiao Bing Luan, Zhi Long Liu, Qi Zhi Liu, and Xue Chang Zhang
- Subjects
Ecology ,Traditional medicine ,Diallyl disulfide ,food and beverages ,General Medicine ,Biology ,Allium sativum ,Median lethal dose ,Acute toxicity ,law.invention ,chemistry.chemical_compound ,Sativum ,Diallyl trisulfide ,chemistry ,law ,Insect Science ,Botany ,Overwintering ,Essential oil - Abstract
In our screening program for insecticidal activity of the essential oils/extracts derived from some Chinese medicinal herbs and spices, garlic (Allium sativum L.) essential oil was found to possess strong insecticidal activity against overwintering adults of Cacopsylla chinensis Yang et Li (Hemiptera: Psyllidae). The commercial essential oil of A. sativum was analyzed by gas chromatography-mass spectrometry. Sixteen compounds, accounting for 97.44% of the total oil, were identified, and the main components of the essential oil of A. sativum were diallyl trisulfide (50.43%), diallyl disulfide (25.30%), diallyl sulfide (6.25%), diallyl tetrasulfide (4.03%), 1,2-dithiolane (3.12%), allyl methyl disulfide (3.07%), 1,3-dithiane (2.12%), and allyl methyl trisulfide (2.08%). The essential oil of A. sativum possessed contact toxicity against overwintering C. chinensis, with an LC50 value of 1.42 microg per adult. The two main constituent compounds, diallyl trisulfide and diallyl disulfide, exhibited strong acute toxicity against the overwintering C. chinensis, with LC50 values of 0.64 and 11.04 /g per adult, respectively.
- Published
- 2013