Validation of a chromatographic method for α-phellandrene quantification in skin permeation studies
DOI:
https://doi.org/10.1590/s2175-97902025e24754Keywords:
Essential oil, Alpha phellandrene, Validation, Analytical method, HPLC-UV, Topical applicationAbstract
Alpha-phellandrene (α-PHE), a cyclic monoterpene abundant in volatile oils, has anti-inflammatory and healing properties. A cutaneous formulation using this bioactive could provide benefits in wound healing. However, a simple method that quantifies α-PHE in the skin is still required. Thus, the study aims to develop and validate a high-performance liquid chromatographic (HPLC-UV) method to quantify α-PHE extracted from the skin. The method uses a reversed-phase C18 column (15 cm × 4.6 mm, 5 μm) and a mobile phase consisting of 0.1% formic acid in water (A) and 0.1% formic acid in acetonitrile (B) flowing at 0.5 mL/min. The phase concentration (A/B %) along the 40-min run time varied as described: 15/85 (0.01–10 min), 0/100 (10.1–20 min), and 15/85 (20.1–40 min). α-PHE was detected at 263 nm. The method was selective against skin and formulation interferents, linear (r = 0.9995) in a concentration range of 0.5–15.0 μg/mL, precise with an overall variation coefficient lower than 5.5%, accurately achieving recovery from the skin within 92–102%, and sensitive for the proposed application (detection limit = 0.05 µg/mL, quantification limit = 0.14 μg/mL). Finally, the validated method was tested in a skin penetration study, attesting to its success in developing topical formulations containing α-PHE.
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