NDLI: Chemical composition and efficacy of some selected plant oils against Pediculus humanus capitis in vitro

Content Provider	Springer Nature Link
Author	Yones, Doaa A. Bakir, Hanaa Y. Bayoumi, Soad A. L.
Copyright Year	2016
Abstract	Natural compounds have been suggested as alternative sources for pediculosis capitis control. We aimed to investigate the chemical composition and evaluate the pediculicidal activity of spearmint, clove, cassia, thyme, eucalyptus, and anise essential oils in addition to sesame oil against human head lice in vitro. A filter paper contact bioassay method was used by applying 0.25 and 0.5 mg/cm2 of each tested oil to filter paper in Petri dishes with 15 females head lice and another with ten nits. The lice mortalities were reported every 5 min for 180 min. The percentage of inhibition of hatch (PIH) was used to calculate ovicidal activity by daily microscopic inspections 5 days after the hatching of controls. Comparison with the widely used pediculicide (malathion) was performed. The most effective essential oil was spearmint followed by cassia and clove with KT50 values of 4.06, 7.62, and 12.12 at 0.5 mg/cm2 and 8.84, 11.38, and 19.73 at 0.25 mg/cm2, respectively. Thyme, eucalyptus, and anise were also effective adulticides with KT50 values of 18.61, 32.65, and 37.34 at 0.5 mg/cm2 and 29.92, 43.16, and 45.37 at 0.25 mg/cm2, respectively. Essential oils were also successful in inhibiting nymph emergence. Spearmint oil was the most effective, with a complete inhibition of emergence at 0.5 mg/cm2. Sesame fixed oil did not show any adulticidal or ovicidal activity against head lice in vitro. The observed insecticidal activity was comparable to malathion. The results herein described the effectiveness of these essential oils as potential pediculicides for head lice control. Incorporation of essential oils in pediculicide formulations needs proper formulation and clinical trials.
Starting Page	3209
Ending Page	3218
Page Count	10
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	115
Issue Number	8
e-ISSN	14321955
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-04-25
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Pediculus humanus capitis Essential oils Adulticidal Ovicidal In vitro Medical Microbiology Microbiology Immunology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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The potential application of plant essential oils to control Pediculus humanus capitis (Anoplura: Pediculidae)

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