The hydrodistillation procedure for a unit equipped with a cohobation system is presented. The production of lovage root essential oil and the difficult recovery of the phthalide content (60–85%) is studied. The general mechanism and the role of parameters involved in the extraction and co‐distillation step (plant matter/water ratio, loading ratio) then in the water/essential oil separation step (pH, condensation temperature) are investigated. This study takes into account the quantitative results (y…
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