Lavender (Lavandula sp) is an important source of high-quality perfumes and has multiple medicinal properties, such as anti-anxiety, anti-depressant, and hypnotic properties. Due to its high market price and medicinal value, lavender essential oil was analyzed. There is a need for rapid, robust, easy, accurate, and cost-effective methodologies for quality control of essential oils from medicinal and aromatic plants. This research evaluated the ability of Fourier transform infrared (FTIR) spectroscopy techniques to identify the of lavender essential oil. Principal component analysis (PCA) was successfully used with 100% accuracy to differentiate lavender essential oil samples from three cultivars. The essential oils linalool and linalyl were identified. The results demonstrated that FTIR spectroscopy can be used as a reliable, robust, rapid, accurate, and low-cost analytical technique for quality assessment of Lavandula essential oil. This study aimed to develop a new and rapid spectroscopic method using chemical modeling techniques for the qualitative and quantitative identification of essential oils in three lavender essential oil species (Lavandula angustifolia, Lavandula intermedia, and Lavandula stoechas). Fifty-two principal component analysis (PCA) models were created, and the one with the best statistical results was evaluated. The best discrimination and quantitative analysis models were found to be those using standardized spectra. The results obtained demonstrated the possibility of successfully detecting the essential oils of three lavender species within a wide concentration range, without the use of any toxic chemicals or pretreatments. The results showed that FTIR models were able to accurately predict all constituents and identify essential oils in lavender. Lavender essential oil was extracted from lavender samples using the Soxhlet technique using 70% alcohol and compared using Fourier transform infrared (FTIR) spectroscopy. FTIR analysis of the pure essential oil extracted from three lavender species revealed distinct peaks for linalool and linalyl, the two main chemical components.
