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Food Protective Effects of Periploca sepium Oil and Its Active Component against Stored Food Mites

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The aim of this study was to examine the acaricidal activity of Periploca sepium oil and its active component against Tyrophagus putrescentiae. Based on its 50% lethal dose (LD50 ) value, P. sepium oil (8.45 μg/cm2) was highly active against T. putrescentiae. The active constituent of P. sepium was isolated by chromatographic techniques and identified as 2-hydroxy-4-methoxybenzaldehyde. In the comparison with synthetic acaricides, the acaricidal activity of 2-hydroxy-4-methoxybenzaldehyde (0.94 μg/cm2) against T. putrescentiae was 12.2- and 31.2-fold greater than those of benzyl benzoate (11.45 μg/cm2) and N,N-diethyl-m-toluamide (29.33 μg/cm2), respectively. To establish structure-activity relationships, the acaricidal activities of 2-hydroxy-4-methoxybenzaldehyde and its derivatives against T. putrescentiae were determined by using an impregnated fabric disk bioassay. On the basis of LD50 values, 4-methoxybenzaldehyde (0.48 μg/cm2) was the most effective against T. putrescentiae, followed by 3-methoxybenzaldehyde (0.82 μg/cm2), 2-hydroxy-5-methoxybenzaldehyde (0.92 μg/cm2), 2-methoxybenzaldehyde (0.95 μg/cm2), 2-hydroxybenzaldehyde (0.97 μg/cm2), and 2-hydroxy-3-methoxybenzaldehyde (2.35 μg/cm2). These results indicate that the introduction of a hydroxyl and/or methoxy group into the benzaldehyde skeleton increased the acaricidal activity. Therefore, 2-hydroxy-4-methoxybenzaldehyde and its derivatives could potentially be used as potent mite control agents.

Document Type: Research Article


Affiliations: 1: Department of Bioenvironmental Chemistry and Institute of Agricultural Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju 561-756, South Korea 2: Department of Bioenvironmental Chemistry and Institute of Agricultural Science and Technology, College of Agriculture and Life Sciences, Chonbuk National University, Jeonju 561-756, South Korea.

Publication date: January 1, 2012

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    The Journal of Food Protection (JFP) is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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