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Abstract
The Effect of Shallot and Kaffir Lime Essential Oils for Relieving Respira-
tory Allergy Symptoms

*,‡ † † †
Sirakhrin Pichaisongkram , Waraporn Dou , Sareepa Hayeekatae , Synong Mae , Nettima
† † †
Pangsagoon , Anongnad Kaewhuafay , Onchuda Prommoon
*Faculty of Nursing, Princess of Naradhiwas University, Thailand
_Bachelor of Nursing Science Program, Faculty of Nursing, Princess of Naradhiwas University, Thailand
_Corresponding author: Sirakhrin@gmail.com

This study aimed to investigate the effect of shallot and kaffir lime (bergamot) essential oils for
relieving respiratory allergy symptoms. The research was conducted among 25 nursing students. The research
tools used were shallot and shallot-kaffir lime essential oils and a questionnaire on the results of the essential
oil usage. The questionnaireûs Cronbach reliability and content validity coefficients were 0.78 and 0.80,
respectively. Data were collected and then analyzed to determine means and standard deviation, and to
perform an independent t-test. The results showed that shallot and kaffir lime essential oils provided the relief
of respiratory allergy symptoms, on the fourth and fifth days of usage, moderately clearing stuffy and runny
nose (x = 3.10-3.20, S.D. = 0.73-0.76, x = 3.05-3.12, S.D. = 0.84-0.88, respectively) and moderately
improving the sense of smell (x = 3.11, S.D. = 1.45). During the trial period the oil aromas had a good
relaxing effect (x = 3.66-3.64, S.D. = 0.70-1.03); and the participants were moderately satisfied with the
essential oils (x = 2.76-3.40, S.D. = 0.70-0.96). Comparing the allergy relief effects of shallot and shallot-
bergamot oils, their mean scores were not different, but their aromasû relaxing effects were significantly
different (x =12.60 and 17.56, p < 0.05). The respiratory allergy effects of both shallot and kaffir lime
essential oils tended to be better with a longer period of use. Therefore, the duration of trial should be
extended; and participants should be selected from those with the same symptoms in order to better compare
the results of the essential oils.

Keywords: kaffir lime essential oil, shallot essential oil, respiratory allergy symptoms

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