RT journal article T1 Development and Validation of an HPLC–DAD Method for the Quantification of Divanillin and the Main Compounds Present in Vanilla planifolia Jacks. ex Andrew A1 Torres‑Zamudio, Yunuen Erandy A1 Rodríguez-Jimenes, Guadalupe del Carmen A1 Fernández Barbero, Gerardo A1 Pérez-Silvia, Araceli A2 Química Analítica K1 Aromatic compounds K1 Divanillin K1 HPLC–DAD K1 Phenols K1 Validation K1 Vanilla planifolia AB This work presents a developed and validated high-performance liquid chromatography with a diode array detection (HPLC–DAD) method for the separation and quantification of divanillin and 8 compounds (p-hydroxybenzyl alcohol, vanillylalcohol, p-hydroxybenzaldehyde, p-hydroxybenzoic acid, vanillic acid, vanillin, anisyl alcohol and anisic acid) present inVanilla planifolia Jacks. ex Andrews. Chromatographic separation was achieved in 15 min using A Zorbax Eclipse XDBC18column (250 mm × 4.6 mm i.d., 5 μm particle size). Gradient elution was performed using a solvent mixture of water,methanol and acidified water (10–2 M H3PO4),at a flow rate of 2.25 mL/min with detection at 230, 254 and 280 nm. Themethod was comprehensively validated according to the International Conference of Harmonization (ICH) Q2 (R1) guidelines.The method was linear in 0.1–200 mg/L concentration range with coefficient of determination (r2) higher than 0.99.The percentage recovery ranged from 98.04 to 101.83% with a relative standard deviation of less than 2%, confirming themethod's accuracy and precision for the analysis of nine compounds. Existing methods for analyzing aromatic compounds invanilla, such as HPLC–DAD, GC–MS, and NMR, often overlook divanillin or lack validated protocols for its quantificationalongside other compounds. This study presents a significant advancement by developing a robust, validated HPLC–DADmethod that enables the simultaneous quantification of divanillin, vanillin, and other key phenolic compounds with evidenceof divanillin presence in all analyzed samples in cured pods of Vanilla planifolia Jacks. ex Andrews, with concentrationsranging from 0.002 to 0.02 g/100g dry weight. PB Springer Nature SN 1936-9751 ; 1936-976X YR 2025 FD 2025 LK http://hdl.handle.net/10498/36970 UL http://hdl.handle.net/10498/36970 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 09-nov-2026