Insecticidal activities of essential oils, Gaultheria fragrantissima and Illicium verum, their components and analogs against Callosobruchus chinensis adults
| Autor: | Junheon Kim, Eunsik Shin, Chung Gyoo Park |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
food.ingredient biology ved/biology ved/biology.organism_classification_rank.species Berry Methyl benzoate biology.organism_classification 01 natural sciences Croton 010602 entomology chemistry.chemical_compound food chemistry Insect Science Botany Organic chemistry Gas chromatography Salicylic acid Illicium verum Methyl salicylate 010606 plant biology & botany Callosobruchus chinensis |
| Zdroj: | Journal of Asia-Pacific Entomology. 19:269-273 |
| ISSN: | 1226-8615 |
| DOI: | 10.1016/j.aspen.2016.03.001 |
| Popis: | Insecticidal activity of croton, linaloe berry, rosewood, star anise, wintergreen oils, methyl salicylate and 8 analogs against Callosobruchus chinensis adults was assessed. The 24-h LC50 values against adult C. chinensis were 3.14, 6.68, 8.59, 8.90 and 10.23 mg/L air for wintergreen, star anise, croton, linaloe berry and rosewood oils. Analyses by gas chromatography (GC) and GC-mass spectrometry led to the identification of 2 and 18 compounds from G. fragrantissima wintergreen and star anise I. verum oils, respectively. Among the compounds identified, methyl salicylate consisted of 99.9% of wintergreen oil and trans-anethole did 91.0% of I star anise oil. To elucidate structure–activity relationship of methyl salicylate and trans-anethole, fumigant and contact toxicities of methyl salicylate, methyl 3-hydroxybenzoate, methyl 4-hydroxybenzoate, methyl 2-methoxysalicylate, methyl 2-acetoxysalicylate, methyl benzoate, salicylic acid, trans-anethole and 1-methoxy-4-propylbenzene were investigated. Methyl 3-hydoxybenzoate, methyl 4-hydroxybenzoate, methyl 2-methoxybenzoate, and methyl 2-acetoxybenozate did not show fumigant activity. The 24-h LC50 values were 3.48, 5.36, 6.39 and 9.27 mg/L air for methyl salicylate, methyl benzoate, trans-anethole, and 1-methoxy-4-propylbenzene, respectively. However, all the compounds tested except methyl 3-hydroxybenzoate and methyl 4-hydroxybenzoate showed contact toxicity. The 24-h LD50 values (μg/beetle) were 28.89, 33.27, 33.56, 44.81 56.31, 38.59 and 69.20 for methyl salicylate, methyl 2-acetobenzoate, methyl 2-methoxybenoate, methyl benzoate, salicylic acid, trans-anethole and 1-methoxy-4-propylbenzene, respectively. Structural differences were identified that may contribute to understanding the insecticidal activities of methyl salicylate and trans-anethole. |
| Databáze: | OpenAIRE |
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