Influence of the treatment medium temperature on lutein extraction assisted by pulsed electric fields from Chlorella vulgaris

Luengo, E. (Universidad de Zaragoza) ; Martínez, J.M. (Universidad de Zaragoza) ; Bordetas, A. ; Álvarez, I. (Universidad de Zaragoza) ; Raso, J. (Universidad de Zaragoza)

Resumen: Influence of the of temperature of biomass (10–40 °C) treated by pulsed electric fields (PEFs) at different intensities (10–25 kV/cm) on electroporation of the microalgae Chlorella vulgaris and on the extraction of lutein was investigated. The occurrence of reversible and irreversible electroporation increased with electric field strength and medium treatment temperature. On the other hand, increasing temperature increased the sensitivity of C. vulgaris cells to irreversible electroporation. Response surface methodology was used to identify optimal PEF treatment conditions for enhancing lutein extraction yield (LEY) from fresh C. vulgaris biomass. Considering the cultivation temperature of C. vulgaris (25–30 °C) and the low increase in the LEY when the PEF treatments were applied at temperatures above 30 °C, a treatment of 25 kV/cm–100 μs at 25–30 °C increased the LEY around 3.5–4.2-fold in comparison with the control, resulting in the most suitable treatment conditions for maximizing the lutein extraction at the lowest energy cost.

Idioma: Inglés

DOI: 10.1016/j.ifset.2015.02.012

Año: 2015

Publicado en: INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES 29 (2015), 15-22
ISSN: 1466-8564

Factor impacto JCR: 2.997 (2015)

Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 18 / 125 = 0.144 (2015) - Q1 - T1

Factor impacto SCIMAGO: 1.675 - Chemistry (miscellaneous) (Q1) - Industrial and Manufacturing Engineering (Q1) - Food Science (Q1)

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Tecnología de Alimentos (Dpto. Produc.Animal Cienc.Ali.)