Soonwera, Mayura

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Soonwera, Mayura
Alternative Name
Soonwera, M.
Main Affiliation
Email
mayura.so@kmitl.ac.th

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    Item type:Publication,
    Insecticidal activity of Citrus aurantium and Eucalyptus globulus essential oils and their major constituents against nymphs and adults of Pediculus humanus capitis De Geer
    (2023-07-01)
    Soonwera, M.
    ;
    Sittichok, S.
    The results showed that every tested EO and its constituents exhibited a higher pediculocidal activity against nymphs and adults of P. humanus capitis than 25% (w/v) benzyl benzoate did. In particular, 5% 1,8-cineole exhibited the highest insecticidal effects against P. humanus capitis nymphs and adults with 100% mortality rate at 1 min with an LT<inf>50</inf> of 0.2 min and an LC<inf>50</inf> of 0.7%. The other EO formulations provided a mortality rate ranging from 0-96.0% and an LT<inf>50</inf> ranging 0.3-315.9 min against nymphs. Against the adults, the mortality rate ranged from 12.0-96.0% with an LT<inf>50</inf> ranging from 1.2-314.5 min. Our data showed that 1,8-cineole has a great potential to control head lice populations and should be further developed into a safe and effective pediculicide.
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    Efficacy of new herbal shampoos from garcinia dulcis kurz, citrus aurantium l. and eucalyptus globulus labill as pediculicides for head lice (Pediculus humans capitis) control
    (2018-07-01)
    Sittichok, S.
    ;
    Soonwera, M.
    Currently, synthetic chemical pediculicides have lost their efficacy due to worldwide increased resistance of head lice to them. Therefore, safe, natural product alternatives are in dire need. This study investigated the efficacy of an herbal shampoo made from Garcinia dulcis (Roxb.) added with either Citrus aurantium EO or Eucalyptus globulus EO against head lice in both in vitro and in vivo tests. In vitro experiment used a filter paper contact method to evaluate the pediculicidal activity of the shampoo at 0.002, 0.003 and 0.006 ml/cm <sup>2</sup> doses (per unit area of petri dish plate) on nymphs and adults of head lice. In vivo trial, the infested children were treated with the shampoo. The results showed either cured or not cured of pediculosis. The main results showed LC50 values against nymphs for G. dulcis + C. aurantium EO shampoo and G. dulcis + E. globulus EO shampoo were 0.00001 and 0.00004 ml/cm <sup>2</sup> , respectively. Those actively against the adults which were 0.7 and 0.9 ml/cm <sup>2</sup> , respectively. In vivo test revealed that G. dulcis + C. aurantium EO shampoo and G. dulcis + E. globulus EO shampoo were the most effective pediculicide, showing 100% cure rate after the 2nd application, much more effective than the tested chemical pediculicide. It concluded that these shampoos can be highly affected pediculicide alternatives and safe for treating humans.