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Título: | Acylglycerol synthesis including EPA and DHA from rainbow trout (Oncorhynchus mykiss) belly flap oil and caprylic acid catalyzed by Thermomyces lanuginosus lipase under supercritical carbon dioxide |
Autor: | Pando, Mª Elsa; Rodríguez, Alicia; Valenzuela, Mª Antonieta; Berríos, Mª Macarena; Rivera, Matías; Romero, Nalda; Barriga, Andrés; Aubourg, Santiago P. CSIC ORCID | Palabras clave: | EPA–DHA Supercritical carbon dioxide Acylglycerol enzymatic synthesis Rainbow trout MALDI-TOF mass spectrometry Response surface methodology |
Fecha de publicación: | 2021 | Editor: | Springer Nature | Citación: | European Food Research and Technology A 247(2): 499-511 (2021) | Resumen: | Supercritical carbon dioxide (SCCO2) was studied as a medium for the esterification of eicosapentaenoic acid (n-3 C20:5, EPA) or docosahexaenoic acid (n-3 C22:6, DHA) and caprylic acid (C8:0, CA) in structured triacylglycerols (sTAG) using Thermomyces lanuginosus lipase as biocatalyst. Process variables (n-3 long-chain polyunsaturated fatty acid: CA, n-3 LCPUFA:CA content ratio), glycerol content (wt. %), and supercritical time, temperature and pressure were optimized by the Response Surface Methodology through a central composite design of 25–1 + star. Synthesis of sTAG with EPA, DHA and CA under SCCO2 was significantly affected by the n-3 LCPUFA:CA content ratio and supercritical time. MALDI-TOF mass spectrometry revealed that acylglycerols with the highest levels of EPA or DHA content in the sn-2 position were obtained when the following variables conditions were applied: 50% (n-3 LCPUFA:CA content ratio), 40 °C (supercritical temperature), 20 MPa (supercritical pressure), 4 h (supercritical time) and 20.0 wt. % (glycerol concentration). For such experimental conditions, esterification catalyzed by Thermomyces lanuginosus lipase under supercritical carbon dioxide allowed obtaining sTAG synthesized with 54.95% of CA, 11.64% of EPA and 13.77% of DHA | Descripción: | 13 pages, 3 figures, 3 tables | Versión del editor: | https://doi.org/10.1007/s00217-020-03643-4 | URI: | http://hdl.handle.net/10261/228849 | DOI: | 10.1007/s00217-020-03643-4 | ISSN: | 1438-2377 | E-ISSN: | 1438-2385 |
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Acylglycerols_sinthesis_2021.pdf | 1,92 MB | Adobe PDF | Visualizar/Abrir |
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