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Evaluation of Repellency Effect of Essential Oils of Satureja khuzestanica (Carvacrol), Myrtus communis (Myrtle), Lavendula officinalis and Salvia sclarea using Standard WHO Repellency Tests.

Kayedi MH, Haghdoost AA, Salehnia A, Khamisabadi K - J Arthropod Borne Dis (2013)

Bottom Line: Using special lotions and repellent sprays on skin is one of the effective methods to prevent Arthropods biting which was verified in this study.Then separated solutions with 10%, 20% and 40% concentrations of essential oils of plants in 99.6 % ethanol were prepared.Essential oils of Salvia sclarea, Lavendula officinalis and Myrtus communis have repellency effect, even with 10% concentration of essential oils.

View Article: PubMed Central - PubMed

Affiliation: Razi Herbal Medicines Research Center and Department of Parasitology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.

ABSTRACT

Background: Using special lotions and repellent sprays on skin is one of the effective methods to prevent Arthropods biting which was verified in this study.

Methods: Essential oils of four plants (Satureja khuzestanica, Salvia sclarea, Lavendula officinalis and Myrtus communis) were separately extracted by Clevenger used hydro distillation method. Then separated solutions with 10%, 20% and 40% concentrations of essential oils of plants in 99.6 % ethanol were prepared. WHO guidelines for efficacy testing of mosquito repellents for human skin were used on different concentrations of essential oils of plants, traditional repellents (DEET, 50% and 33%) as positive control, and ethanol 99.6% and naked hands as negative controls.

Results: In negative control groups, the number of bits were comparable (P= 0.42) and had decreasing time trends (naked hands P= 0.011, ethanol P< 0.001). In all time points, minimum bites were observed in traditional repellents and it was significantly less than the other groups (P< 0.001). The time trend in the number of bites in the other groups was positive and showed minimum number of bites in time zero in all groups. We also found that the concentration of repellents had association with the number of bites. The maximum and minimum numbers of bites were observed with 10% and 40% concentrations respectively in all groups.

Conclusion: Essential oils of Salvia sclarea, Lavendula officinalis and Myrtus communis have repellency effect, even with 10% concentration of essential oils.

No MeSH data available.


Related in: MedlinePlus

The time trends in the number of bites per session classified by the type of repellents and control groups
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f1-jad-8-60: The time trends in the number of bites per session classified by the type of repellents and control groups

Mentions: Figure 1 shows the marginal means of the number of bites per session (adding together the results of different concentrations based on the results of multivariate analysis) of An. stephensi up to 5 hours classified by the type of repellents and control groups. Based on these findings, in negative control groups, the number of bits were comparable (P= 0.42) and had decreasing time trends (naked hands P= 0.011, ethanol P< 0.001), started from around 30 bites in time zero, reached to around fourteen in negative control group (naked hands), and six in another negative control group (ethanol, 99.6%) after five hours.


Evaluation of Repellency Effect of Essential Oils of Satureja khuzestanica (Carvacrol), Myrtus communis (Myrtle), Lavendula officinalis and Salvia sclarea using Standard WHO Repellency Tests.

Kayedi MH, Haghdoost AA, Salehnia A, Khamisabadi K - J Arthropod Borne Dis (2013)

The time trends in the number of bites per session classified by the type of repellents and control groups
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4289512&req=5

f1-jad-8-60: The time trends in the number of bites per session classified by the type of repellents and control groups
Mentions: Figure 1 shows the marginal means of the number of bites per session (adding together the results of different concentrations based on the results of multivariate analysis) of An. stephensi up to 5 hours classified by the type of repellents and control groups. Based on these findings, in negative control groups, the number of bits were comparable (P= 0.42) and had decreasing time trends (naked hands P= 0.011, ethanol P< 0.001), started from around 30 bites in time zero, reached to around fourteen in negative control group (naked hands), and six in another negative control group (ethanol, 99.6%) after five hours.

Bottom Line: Using special lotions and repellent sprays on skin is one of the effective methods to prevent Arthropods biting which was verified in this study.Then separated solutions with 10%, 20% and 40% concentrations of essential oils of plants in 99.6 % ethanol were prepared.Essential oils of Salvia sclarea, Lavendula officinalis and Myrtus communis have repellency effect, even with 10% concentration of essential oils.

View Article: PubMed Central - PubMed

Affiliation: Razi Herbal Medicines Research Center and Department of Parasitology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran.

ABSTRACT

Background: Using special lotions and repellent sprays on skin is one of the effective methods to prevent Arthropods biting which was verified in this study.

Methods: Essential oils of four plants (Satureja khuzestanica, Salvia sclarea, Lavendula officinalis and Myrtus communis) were separately extracted by Clevenger used hydro distillation method. Then separated solutions with 10%, 20% and 40% concentrations of essential oils of plants in 99.6 % ethanol were prepared. WHO guidelines for efficacy testing of mosquito repellents for human skin were used on different concentrations of essential oils of plants, traditional repellents (DEET, 50% and 33%) as positive control, and ethanol 99.6% and naked hands as negative controls.

Results: In negative control groups, the number of bits were comparable (P= 0.42) and had decreasing time trends (naked hands P= 0.011, ethanol P< 0.001). In all time points, minimum bites were observed in traditional repellents and it was significantly less than the other groups (P< 0.001). The time trend in the number of bites in the other groups was positive and showed minimum number of bites in time zero in all groups. We also found that the concentration of repellents had association with the number of bites. The maximum and minimum numbers of bites were observed with 10% and 40% concentrations respectively in all groups.

Conclusion: Essential oils of Salvia sclarea, Lavendula officinalis and Myrtus communis have repellency effect, even with 10% concentration of essential oils.

No MeSH data available.


Related in: MedlinePlus