Optimisation of concurrent Calophyllum oil-resin extraction and separation
2021
Kartika, Ika, Amalia | Cerny, Muriel | Vandenbossche, Virginie | Evon, Philippe | Trisunaryanti, Wega | Mukti, Rino, Rakhmata | Hartati, Hartati | Yuliana, Nancy, Dewi | Sailah, Illah | Bogor Agricultural University (IPB) | Laboratoire de Chimie Agro-Industrielle (LCA) ; Ecole nationale supérieure des ingénieurs en arts chimiques et technologiques (ENSIACET) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Ecole d'Ingénieurs de Purpan (INP - PURPAN) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Department of Chemistry, Faculty of Mathematics and Natural Science, Gadjah Mada University ; Gadjah Mada University = Universitas Gadjah Mada (UGM) | Institut Teknologi Bandung (ITB) | Airlangga University
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Afficher plus [+] Moins [-]anglais. This research optimised the application of a hexane-methanol mixture as a binary solvent for the concurrent oil-resin extraction and separation from Calophyllum seeds on a pilot scale, in a direct stage. The optimum oil and resin yields were determined by optimising the extraction conditions using response surface methodology and a second order polynomial model. The extraction conditions affected the oil and resin yields, with the extraction time as the biggest influencing factor. Optimum oil (65%) and resin (16%) yields were predicted to be obtained at 5.2 h and 433 rpm. The model validation with these extraction conditions showed that the predicted results and actual oil (62%) and resin (15%) yields were in passable agreement. The oil was composed of 75.4% triglycerides with a density of 0.874 g·cm<sup>–3</sup>, a viscosity of 26.4 mPa·s<sup>–1</sup>, an acid value of 46.4 mg KOH·g<sup>–1</sup>, an iodine value of 98.0 g iodine·100 g<sup>–1</sup>, trace water and sediment contents, and zero ash content. The resin had a viscosity of 4 694.8 mPa·s<sup>–1</sup>, a total phenolic content of a 4.51% gallic acid equivalent, an antioxidant activity of an 8.82 mg ascorbic acid equivalent·g<sup>–1</sup>, and an acid value of 126.2 mg KOH·g<sup>–1</sup>.
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