Extraction of turpentine essential oil from Pinus pinaster ait: Comparison of yield and composition between conventional- or microwave assisted-hydro-distillation and vacuum distillation
2024
Chalier, Pascale | Martinez-Lopez, Brais | Lacour, Marie-Agnès | Rigou, Peggy | Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM) ; Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS) | Sciences Pour l'Oenologie (SPO) ; Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Le syndicat mixte du Pays des Cévennes et le PETR Sud-Lozère
International audience
Показать больше [+] Меньше [-]Английский. Turpentine essential oil was extracted from Pinus pinaster Ait. resin, collected from “les Cévennes” area (south-eastern France). Three extraction processes were investigated: conventional hydro-distillation (CHD), microwaves assisted hydro-distillation (MWHD) under a limited amount of water and a solvent-free process, i.e. vacuum distillation (VD). The selected experimental conditions agreed with the theoretical flash region and equilibrium yield predicted by flash calculations described well the results.CHD using a low water/resin ratio of 2 showed a high yield (∼25%w/w) and a turpentine essential oil (EO) primarily rich in α- and β-pinenes, but also in sesquiterpene compounds such as β-caryophyllene. Microwave heating did not improve the total extraction staying around 20%w/w but depending on power condition, both the monoterpene/sesquiterpene ratio and the proportion of oxygenated compounds can be increased. Pressure, rather than temperature, was observed to have a greater impact on the VD extraction yield. At a temperature above or equal to 90 °C and a pressure of 1 kPa, the yield became comparable to that obtained by CHD but with a high pinenes and low sesquiterpenes content.
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