Identification of insecticidal constituents of the essential oil of Curcuma wenyujin rhizomes active against Liposcelis bostrychophila Badonnel
| Autor: | Zhi Long Liu, Chun Ming Liu, Shu-Shan Du, Na Na Zhao, Ligang Zhou |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Insecticides
Insecta Liposcelis bostrychophila Pharmaceutical Science Germacrone Curzerene Fractionation Article fumigant Analytical Chemistry law.invention lcsh:QD241-441 Lethal Dose 50 chemistry.chemical_compound Camphor Curcuma Linalool lcsh:Organic chemistry law Curcuma wenyujin camphor Drug Discovery Botany Animals Plant Oils Physical and Theoretical Chemistry contact toxicity Essential oil essential oil composition 1 8-cineole Traditional medicine biology Organic Chemistry biology.organism_classification Rhizome chemistry Chemistry (miscellaneous) Molecular Medicine |
| Zdroj: | Molecules Molecules, Vol 17, Iss 10, Pp 12049-12060 (2012) Molecules; Volume 17; Issue 10; Pages: 12049-12060 |
| ISSN: | 1420-3049 |
| Popis: | The aim of this research was to determine the chemical composition and insecticidal activity of the essential oil of Curcuma wenyujin Y.H. Chen et C. Ling rhizomes against the booklouse Liposcelis bostrychophila Badonnel and to isolate any insecticidal constituents from the essential oil. The essential oil of C. wenyujin rhizomes was obtained by hydrodistillation and analyzed by GC-MS. A total of 43 components of the essential oil were identified and the principal compounds in the essential oil were 1,8-cineole (15.26%), camphor (10.12%), germacrone (6.86%), β-elemene (6.33%), curzerene (6.70%), and β-elemenone (5.23%). followed by curzerenone (4.52%), curdione (4.45%) and linalool (4.43%). Based on bioactivity-guided fractionation, the two main active constituents were isolated from the essential oil and identified as 1,8-cineole and camphor. The essential oil of C. wenyujin rhizomes exhibited contact toxicity against L. bostrychophila with an LD50 value of 208.85 µg/cm2. Camphor (LD50 = 207.26 µg/cm2) exhibited stronger contact toxicity than 1,8-cineole (LD50 = 1048.75 µg/cm2) against booklouse. The essential oil of C. wenyujin (LC50 = 2.76 mg/L air) also possessed fumigant toxicity against L. bostrychophila, while the two constituents, camphor and 1,8-cineole had LC50 values of 1.03 mg/L air and 1.13 mg/L air, respectively. The results indicate that the essential oil of C. wenyujin rhizomes and its constituent compounds have potential for development as natural insecticides or fumigants for control of insects in stored grains. |
| Databáze: | OpenAIRE |
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