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Persistency of larvicidal effects of plant oil extracts under different storage conditions

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Abstract

The persistency of larvicidal effects of 13 oils (camphor, thyme, amyris, lemon, cedarwood, frankincense, dill, myrtle, juniper, black pepper, verbena, helichrysum, and sandalwood) was examined by storage of 50-ppm solutions under different conditions (open, closed, in the light, and in the dark) for 1 month after the preparation of the solutions. The stored solutions were tested against Aedes aegypti larvae for four times during the storage period. Some oils under some conditions stayed effective until the last test, while some solutions had lost their toxicity during a short time after preparation. Thus, the mode of storage is absolutely important for the larvicidal effects. The fresh preparations were always the best.

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Authors and Affiliations

  1. Omar Almukhtar University, P.O. Box 919, Elbieda, Libya

    Abdelkrim Amer

  2. Department of Zoology, Cell Biology and Parasitology, Heinrich Heine University, Düsseldorf, Germany

    Heinz Mehlhorn

Authors
  1. Abdelkrim Amer
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  2. Heinz Mehlhorn
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Correspondence to Abdelkrim Amer.

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Amer, A., Mehlhorn, H. Persistency of larvicidal effects of plant oil extracts under different storage conditions. Parasitol Res 99, 473–477 (2006). https://doi.org/10.1007/s00436-006-0183-2

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  • DOI: https://doi.org/10.1007/s00436-006-0183-2

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