The potency of rosemary essential oil on tick lethal time in vitro test

Rosemary essential oil is already used in many fields for its health benefit. One of less known benefits are the antiparasitic properties. This study aims to analyze the effect of rosemary essential oil administration on the time of tick death tick (Rhipicephalus sanguineus). In this study, 50 ticks were divided into 5 groups
and each group got 5 different treatments such as 10%, 15%, and 20% concentration of rosemary essential oil, also commercial anti parasite containing fipronil 3% as control positive and virgin coconut oil as control negative. The tick groups were observed in 3 periods of 30 minutes each. The group with rosemary essential oil concentration 10% treatment have LT50 at 2 hours 27 minutes, the 15% concentration rosemary essential oil treatment group have LT50 at 1 hour 10 minutes, and the 20%
concentration rosemary essential oil treatment group have LT50 at 34 minutes. The result of this study concluded that the rosemary essential oil in 20% concentration is almost as effective as the commercial anti parasite containing active ingredient fipronil 3% in its acaricidal properties.