INVESTIGADORES
MAESTRI Damian Modesto
artículos
Título:
Walnut and almond oil extraction at industrial scale: Effects of process parameters on oil yield and quality
Autor/es:
MARTINEZ MARCELA; MARÍA GABRIELA BORDÓN; BODOIRA ROMINA; PENCI MARÍA CECILIA; PABLO RIBOTTA; DAMIÁN MAESTRI
Revista:
GRASAS Y ACEITES
Editorial:
INST GRASA SUS DERIVADOS
Referencias:
Año: 2017 vol. 68
ISSN:
0017-3495
Resumen:
Walnut and almond kernels are highly nutritious mainly due to their high oil contents. In this study, 32 factorial experimental designs were used to optimize processes for oil extraction by screw-pressing at industrial scale. Experimental designs included seed moisture content (SMC), and restriction die (RD) as the main processing parameters. Theoretical models were scanned against experimental data in order to optimize oil extraction conditions. The response variables analyzed were oil recovery (OR), fine solid content (FC) in oil, and oil quality parameters. Fitted models for OR indicated maximum predicted values similar to the highest experimental values. Walnut oil extractions showed a maximum OR (84.5 ± 2.3 %) at 7.21 % SMC, and 10 mm RD. For almond kernels, maximum OR (71.9 ± 3.5 %) was obtained at 9.42 % SMC, and 12 mm RD. Chemical quality parameters from both oils were in the ranges stated in Codex (FAO/WHO) standards for virgin (non-refined) oils.