Investigation of in vitro wound healing properties of Salvia sclarea and Citrus aurantium essential oil combinations

Abstract

Salvia sclarea L. and Citrus aurantium L. are used ethnobotanically for wound treatment. The aim of this study was to evaluate phytochemical composition of Salvia sclarea L. and Citrus aurantium L. leaf essential oils and wound healing activities of their combinations. The phytochemical analysis was performed gas chromatography (GC) and mass spectroscopy (MS). Major components of S. sclarea leaf essential oil was confirmed both by GC-FID and GC/MS as 67% linalyl acetate, 20.2% linalool, 2.6%α-terpineole, respectively. The major components of C. aurantium leaf essential oil was also confirmed as 55% linalyl acetate, 23.4% linalool, 5.4%α-terpineole, respectively. Combinations of essential oils were loaded into Carbopol gel formulations. Wound healing activity of essential oil and combinations was investigated using in vitro scratch assay. As a result of the study, it was determined that the most effective wound healing concentration for Salvia sclarea essential oil was 50 µg/mL. The most effective concentration of Citrus aurantifolia essential oil was determined as 12.5 µg/mL. The aim of the study is to investigate the wound healing activities of the tested essential oils individually and in combination. The fact that no activity is observed in empty formulations is evidence that the activity of the loaded formulations does not come from empty formulations. It was observed that the loaded formulations showed better effects than the control Madecassol. Studies need to be confirmed by working under in vivo conditions.