Soonwera, Mayura

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

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    Efficacy of Thai herbal shampoos from averrhoa carambola L., Hibiscus sabdariffa L. and Passiflora edulis Sims. for controlling head lice, pediculus humanus capitis (De Geer)
    (2018-09-01)
    Sittichok, S.
    ;
    Chantawee, A.
    ;
    Soonwera, M.
    Pediculosis is an infestation of the scalp caused by head lice, Pediculus humanus capitis (De Geer), which affects important public health in schoolchildren. Nowadays, head lice resistant to chemical pediculicide are increasing, thus alternative products from herbal shampoos or herbal cream are needed for head lice control. This study aimed to determine the efficacies of Thai herbal shampoos made from fruits of Averrhoa carambola L. (A. carambola), Hibiscus sabdariffa L. (H. sabdariffa) and Passiflora edulis Sims. (P. edulis) on mortality of head lice, at 1, 5 and 10 ml/plate by filter paper contact bioassay in vitro test and in vivo test, several infested children were treated with each shampoo and make a comparison between them and a chemical shampoo, carbaryl, by in vitro and in vivo tests. Every treatment was repeated three times. The in vitro results showed that the 5 and 10 ml/plate doses of P. edulis and H. sabdariffa shampoos exhibited the highest efficacy as pediculicide against nymphs with an LC <inf>50</inf> of 0.85 ml/plate and LT <inf>50</inf> between <0.1 to 0.20, and <0.1 to 0.47 min, respectively. LC <inf>50</inf> of P. edulis and H. sabdariffa shampoos against adults were 0.85 and 1.09 ml/plate, respectively, and LT <inf>50</inf> was between <0.1 to 0.83 min. From the in vivo test, P. edulis shampoo was found to be the most effective in controlling head lice with 100% cure rate after the 2nd treatment. It was more effective than carbaryl.In conclusion, P. edulis shampoo is an effective alternative as pediculicide for head lice treatment because it is safe: no side effects on the scalp of the subjects were observed.
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    Adulticidal effect of combinations between Cymbopogon citratus and Eucalyptus globulus essential oils against Pediculus humanus capitis De Geer
    (2023-07-01)
    Soonwera, M.
    ;
    Sittichok, S.
    The results showed that all head lice adults that were immersed in a combination of 15% C. citratus EO + 15% E. globulus EO, 20% C. citratus EO + 20% E. globulus EO, and 30% C. citratus EO + 30% E. globulus EO for 3 min were destroyed with the highest mortality rate of 100% at 30 min and an LT50 ranging from 1.2 to 1.5 min. However, 0.5% (w/w) permethrin shampoo provided a slightly higher adulticidal activity than all EO formulations in terms of LT50 (0.9 min). According to the LD50 values reported in the literature, C. citratus EO + E. globulus EO can be developed into a safer shampoo for head lice treatment.