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Bioprocess Biosyst Eng ; 43(11): 1943-1949, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32474747

RESUMEN

The objective of this work was to concentrate, through a membrane separation process, the fatty acids from oil/solvent mixture. The oil was obtained by ultrasound-assisted extraction from freeze-dried cells of Mortierella isabellina. The concentration of the fatty acids was investigated using flat-sheet polymer membranes of ultrafiltration and nanofiltration. The effects of temperature and pressure were evaluated by the retention of the fatty acids. Oil retentions between 45.23 and 58.20% to ultrafiltration membrane and 43.50 and 56.00% to nanofiltration membrane were observed. The best condition for the ultrafiltration membrane was 4 bar and 40 °C and for nanofiltration membrane was 12 bar and 50 °C. The oil contains a high concentration of oleic acid and palmitic acid that is a desirable property for the biodiesel production. The results showed the applicability of this technology in the solvent recovery step whereas the oil recovered contains a high concentration of fatty acids.


Asunto(s)
Biocombustibles , Biotecnología/métodos , Ácidos Grasos/aislamiento & purificación , Microbiología Industrial/métodos , Mortierella/metabolismo , Diseño de Equipo , Ácidos Grasos/análisis , Ácidos Grasos/química , Fermentación , Liofilización , Membranas Artificiales , Ácido Oléico , Polímeros/química , Presión , Temperatura , Factores de Tiempo , Ultrafiltración/métodos , Ultrasonido
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