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Title: | Optimisation of rancidity stability 6 in long-chain PUFA 7 concentrates obtained from a rainbow trout (Oncorhynchus 8 mykiss) by-product |
Authors: | Berríos, Mª Macarena; Rodríguez, Alicia; Rivera, Matías; Pando, Mª Elsa; Valenzuela, Mª Antonieta; Aubourg, Santiago P. CSIC ORCID | Issue Date: | 2017 | Publisher: | John Wiley & Sons | Citation: | International Journal of Food Science and Technology - Oxford 52(6): 1463-1472 (2017) | Abstract: | This research was focused on the production of polyunsaturated fatty acid concentrates from a farmed rainbow trout (Oncorhynchus mykiss) by-product (i.e. belly muscle). The effect of different process variables (urea/fatty acids (FA) contents ratio, crystallisation time and temperature and stirring speed of the urea/FA mixture) on the lipid oxidation development during the urea complexation process was investigated. For this purpose, an experimental design (26 runs) following the response-surface methodology was developed. As a result, peroxide value and TOTOX index showed to be dependent on the crystallisation time and temperature and the urea/FA ratio, while no influence of the crystallisation stirring speed was detected on both indices; additionally, polyene index was affected by the urea/FA ratio and its interaction with the crystallisation time. An optimised desirability score near 1.0 was attained provided values of 2.8 °C, 3.05 h and 3.57 were applied for crystallisation temperature, crystallisation time and urea/FA ratio, respectively | Description: | 10 páginas, 5 figuras, 2 tablas | Publisher version (URL): | http://dx.doi.org/10.1111/ijfs.13406 | URI: | http://hdl.handle.net/10261/150961 | DOI: | 10.1111/ijfs.13406 | ISSN: | 0950-5423 | E-ISSN: | 1365-2621 |
Appears in Collections: | (IIM) Artículos |
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