Effects of Oliveria decumbens and Ferula assa-foetida essential oils and their nanoemulsions on Mediterranean flour moth (Ephestia kuehniella)

In this study, effects of essential oils and their nanoemulsions extracted from Oliveria decumbens flowers and Ferula assa-foetida oleo-gum-resin were evaluated on late-instar larvae of the Mediterranean flour moth (Ephestia kuehniella). The selected concentrations of the essential oils and their nanoemulsions were as follows: O. decumbens essential oils (۲۵۰, ۳۰۰, ۳۷۰, ۴۱۰, and ۴۹۰ µL/L), F. assafoetida essential oils (۱۰۰, ۱۲۰, ۱۵۰, ۲۱۰, and ۲۷۰ µL/L), O. decumbens essential oil nanoemulsion (۱۷۰, ۲۳۰, ۳۰۰, ۳۵۰, and ۴۱۰ µL/L), and F. assa-foetida essential oil nanoemulsion (۳۰, ۶۰, ۹۰, ۱۱۰, and ۱۳۰ µL/L). The results showed that the nanoemulsion of F. assa-foetida essential oil was more effective than that of O. decumbens, with a ۵۰% lethal dose (LD۵۰) of ۷۹.۲۴۹ µL/L being more effective than a ۵۰% lethal dose (LD۵۰) of ۲۸۴.۹۹۱ µL/L. In addition, the toxicity levels of F. assa-foetida were considerably higher than those of O. decumbens in both its nanoemulsion and essential oil forms, with lethal dose ratios recorded at ۰.۲۷۸ and ۰.۴۵۶, respectively. These findings suggest that essential oils could serve as an alternative to synthetic pesticides for controlling Mediterranean flour moths.

کلیدواژه ها:

Essential oil ، Ferula assa-foetida ، Mediterranean flour moth ، Nanoemulsion ، Oliveria decumbens