Artículo
Pavlova gyrans as a potential source of essential fatty acids, sterols and pigments: culture under low temperature
Almeyda, María Delfina
; Scodelaro Bilbao, Paola Gabriela
; Sánchez Puerta, María Virginia
; Constenla, Diana Teresita
; Leonardi, Patricia Ines
Fecha de publicación:
06/2023
Editorial:
Springer
Revista:
Journal of Applied Phycology
ISSN:
0921-8971
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Haptophytes are emerging as sustainable sources of high-value metabolites such as polyunsaturated fatty acids (PUFAs). The goal of this work was to isolate a native haptophyte from the southwestern Atlantic coast and to evaluate the effect of low-temperature stress on the concentration of PUFAs, sterols, and pigments during its cultivation. The strain was identified as Pavlova gyrans. Cultures were carried out in a photobioreactor for 10 days at 20 °C (Control), lowering the culture temperature to 10 °C at the beginning of the stationary growth phase (LTS). The lipid content of the biomass represented 13% of the dry weight, neutral lipids being the main lipid fraction. Under LTS, biomass increased significantly, reaching a value of 305 mg L−1. The same effect was observed with PUFAs content, which represented 41.3% of total fatty acids. The most abundant omega-3 (ω3) and omega-6 (ω6) fatty acids were eicosapentaenoic (EPA) and docosapentaenoic (DPA), respectively. PUFAs concentration under LTS reached 6.65 mg L−1 of which 3.59 mg L−1 corresponded to ω3 and 3.06 mg L−1 to ω6. EPA reached a value of 2.82 mg L−1 while that for DPA was of 1.59 mg L−1. The maximum content of phytosterols was obtained during the exponential growth phase. The most abundant phytosterol was 24-ethylcholesta-5,22-dien-3β-ol, which represented ≈41–49% of the free sterol fraction, with a volumetric concentration of ≈320 μg L−1. Finally, under LTS pigments reached a value of ≈700 μg L−1. These results open the way for further progress towards the commercial and profitable cultivation of P. gyrans for food and aquaculture applications.
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Identificadores
Colecciones
Articulos(CERZOS)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Articulos de CENTRO REC.NAT.RENOVABLES DE ZONA SEMIARIDA(I)
Articulos(IBAM)
Articulos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Articulos de INST.DE BIOLOGIA AGRICOLA DE MENDOZA
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Almeyda, María Delfina; Scodelaro Bilbao, Paola Gabriela; Sánchez Puerta, María Virginia; Constenla, Diana Teresita; Leonardi, Patricia Ines; Pavlova gyrans as a potential source of essential fatty acids, sterols and pigments: culture under low temperature; Springer; Journal of Applied Phycology; 35; 3; 6-2023; 1073-1089
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