Extractive deterpenation of citrus essential oils using quaternary ammonium-based deep eutectic solvents

Separation of terpenoids from terpenes in citrus essential oils (CEOs) downstream processing is essential for practical applications. In this work, 19 deep eutectic solvents (DESs), formed by combining quaternary ammonium salts as hydrogen bond acceptors (HBAs) with alkanediols, glycols, and monocarboxylic acids as hydrogen bond donors (HBDs), were utilized to evaluate their performance in extractive deterpenation of model CEOs. The effects of...