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The effects of sous-vide cooking on the bio-functionality, nutritional value and health benefits of salmon lipids

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dc.contributor.advisor Zabetakis, Ioannis
dc.contributor.author Redfern, Shane
dc.date.accessioned 2020-02-07T11:15:59Z
dc.date.available 2020-02-07T11:15:59Z
dc.date.issued 2019
dc.identifier.uri http://hdl.handle.net/10344/8497
dc.description peer-reviewed en_US
dc.description.abstract Cardiovascular diseases has become the major cause of death globally. Inflammation and platelet aggregation play crucial role in the development and progression of atherosclerosis and CVD. prevent inflammation, atherosclerosis, and endothelial dysfunction and ultimately cardiovascular events. Fish and especially oily fish such as Salmon are vital components of healthy dietary patterns with preventive properties against CVD. Raw salmon contain bioactive polar lipids (PLs) with strong antithrombotic bioactivities. However, salmon is mainly consumed cooked. The aim of the present study was to evaluate for the first time the effects of the emerging mild sous vide cooking processing on the antithrombotic properties, lipid content and sensory characteristics of salmon. Total lipids (TLs) were extracted from brined and un-brined salmon sous vide preparations in several temperatures (52°C, 65°C and 80°C) and further separated into the Neutral Lipids (NLs) and PLs fractions. The antithrombotic properties of salmon PLs were tested in human platelets, while their fatty acid content was determined by LC-MS analysis. Sensory tests were performed using napping followed by check-all-that apply. Sous vide salmon preparations in all conditions did not affect the taste, whereas in 65°C and 80°C slight textural differences were observed. Mild sous vide cooking of brined or un-brined salmon in low temperatures (52-65°C) did not affect the potent inhibitory effect of salmon PLs against human platelet aggregation induced by the inflammatory and thrombotic mediators’ platelet-activating factor (PAF) and thrombin, but also by the well-established platelet agonists adenosine diphosphate (ADP) and collagen. Sous vide preparations of both brined and un-brined salmon in higher temperatures, such as those usually applied for pasteurization (80°C), resulted in reduction of these antithrombotic properties of salmon. This was accompanied by a reduction of the EPA and DHA content of the salmon in these conditions in the un-brined sous vide preparations. Nevertheless, the antithrombotic properties of salmon PLs were preserved in considerable potency even when high temperatures were applied for the sous vide salmon preparations. This outcome if combined with the observed low values of the n-6/n-3 ratio of the PUFA content in the salmon PLs of all sous vide preparations, further suggest a beneficial role for such a mild cooking procedure for preserving the cardio-protective properties of salmon. en_US
dc.language.iso eng en_US
dc.publisher Univesity of Limerick en_US
dc.subject cardiovascular diseases en_US
dc.subject atheroscelerosis en_US
dc.subject CVD en_US
dc.subject salmon en_US
dc.title The effects of sous-vide cooking on the bio-functionality, nutritional value and health benefits of salmon lipids en_US
dc.type info:eu-repo/semantics/masterThesis en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.type.supercollection ul_theses_dissertations en_US
dc.contributor.sponsor EI en_US
dc.relation.projectid IP 20190789Y en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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