A novel approach for lavender essential oil authentication and quality assessment

• A comprehensive study was conducted on a large set of lavender essential oils (LEOs). GC/MS, GC/Q-ToF, NMR, and chemometrics were applied for adulteration detection. novel approach, Q-Index, developed authentication quality assessment. Q-Index successfully evaluation commercial LEO products. The implementation could improve control the industry. Currently, ( Lavandula angustifolia Mill.) oil (LEO) is defined regulated based standards methods established by regulatory authorities. Unfortunately, these existing are not sufficient due to complexity encouraged burgeoning market. This provides an efficient reliable method assessment After investigation, involving samples (n = 72) analyzed multiple techniques (GC/MS, chemometric analysis), new approach named proposed. Fourteen marker compounds, along with trans -furano-linalool oxide acetate (an indicator synthetic compound in LEO), identified. These compounds played significant roles discriminating adulterated from authentic LEOs. Calculation value using identified permitted detection fraudulent samples. As demonstrated, all LEOs exhibited high values > 100), whereas or poor-quality displayed low (<100). NMR-based analysis, which served as independent complementary GC/MS methods, order assess validity method. Overall, results obtained different good agreement. Moreover, compared NMR method, possessed greater sensitivity detecting associated addition compounds. Results this demonstrated that be may have potential