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  • Repellent activity of essential oils and some of their individual constituents against Tribolium castaneum herbst.

Repellent activity of essential oils and some of their individual constituents against Tribolium castaneum herbst.

Journal of agricultural and food chemistry (2011-02-05)
Karina Caballero-Gallardo, Jesús Olivero-Verbel, Elena E Stashenko
ABSTRACT

A tool for integrated pest management is the use of essential oils (EOs) and plant extracts. In this study, EOs from Tagetes lucida , Lepechinia betonicifolia , Lippia alba , Cananga odorata , and Rosmarinus officinalis , species grown in Colombia, were analyzed by gas chromatography-mass spectrometry. These oils as well as several of their constituents were tested for repellent activity against Tribolium castaneum , using the area preference method. The main components (>10%) found in EOs were methylchavicol, limonene/α-pinene, carvone/limonene, benzyl acetate/linalool/benzyl benzoate, and α-pinene, for T. lucida, L. betonicifolia, L. alba, C. odorata, and R. officinalis, respectively. All EOs were repellent, followed a dose-response relationship, and had bioactivity similar to or better than that of commercial compound IR3535. EOs from C. odorata and L. alba were the most active. Compounds from EOs, such benzyl benzoate, β-myrcene, and carvone, showed good repellent properties. In short, EOs from plants cultivated in Colombia are sources of repellents against T. castaneum.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Benzyl benzoate, ReagentPlus®, ≥99.0%
Supelco
Myrcene, analytical standard
Sigma-Aldrich
Benzyl benzoate, natural, ≥99%, FCC, FG
Sigma-Aldrich
Myrcene, technical grade
Sigma-Aldrich
Myrcene, stabilized, FCC, FG
Supelco
Benzyl benzoate, Pharmaceutical Secondary Standard; Certified Reference Material
Supelco
Benzyl benzoate, analytical standard
Sigma-Aldrich
Benzyl benzoate, ≥99%, FCC, FG
Sigma-Aldrich
Benzyl benzoate, meets USP testing specifications
Sigma-Aldrich
Benzyl benzoate, tested according to Ph. Eur.