Active Monoterpene Ketones Isolated from Rosmarinus officinalis with Fumigant and Contact Action against Tyrophagus putrescentiae (Schrank)

• Published in: Journal of food protection 2014-08, Vol.77 (8), p.1355-1360
• Main Authors: JEON, Ju-Hyun, PARK, Jun-Hwan, NAMHYUN CHUNG, LEE, Hoi-Seon
• Format: Article
• Language: English
• Subjects: Acaricides; Acaricides - chemistry; Acaricides - isolation & purification; Acaricides - toxicity; Acaridae - drug effects; Animals; Bioassays; Biological and medical sciences; Chemicals; Chromatography; Cotton fabrics; Food; Food contamination & poisoning; Food industries; Food safety; Fumigation; Fundamental and applied biological sciences. Psychology; Insects; Ketones; Ketones - chemistry; Ketones - isolation & purification; Ketones - toxicity; Liquid chromatography; Mass spectrometry; Monoterpenes - chemistry; Monoterpenes - isolation & purification; Monoterpenes - toxicity; NMR; Nuclear magnetic resonance; Oils & fats; Plant Extracts - chemistry; Plant Extracts - isolation & purification; Plant Extracts - pharmacology; Rosmarinus - chemistry; Scientific imaging; Silica; Toxicity
• ISSN: 0362-028X; 1944-9097
• DOI: 10.4315/0362-028X.JFP-14-087

The acaricidal activities of an active material derived from Rosmarinus officinalis oil and its relative monoterpene ketones were determined using fumigant and contact toxicity bioassays against Tyrophagus putrescentiae and were compared with that of a commercial acaricide (benzyl benzoate). The active component of R. officinalis oil, isolated by silica gel column chromatography and high-performance liquid chromatography, was identified as camphor, based on various spectroscopic analyses. In the fumigant toxicity bioassay, camphor (2.25 μg/cm(3)) was 5.58 times more active than benzyl benzoate (12.56 μg/cm(3)) against T. putrescentiae, followed by (+)-camphor (3.89 μg/cm(3)) and (-)-camphor (5.61 μg/cm(3)). In the contact toxicity bioassay, camphor (1.34 μg/cm(2)) was 6.74 times more toxic than benzyl benzoate (9.03 μg/cm(2)) against T. putrescentiae, followed by (+)-camphor (2.23 μg/cm(2)) and (-)-camphor (2.94 μg/cm(2)). These results indicate that camphor and its derivatives are very useful as potential control agents against stored food mites regardless of the application method.