• Login
    View Item 
    •   T-Stór
    • Irish Journal of Agricultural & Food Research
    • IJAFR, volume 43, 2004
    • View Item
    •   T-Stór
    • Irish Journal of Agricultural & Food Research
    • IJAFR, volume 43, 2004
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of T-StórCommunitiesPublication DateAuthorsTitlesSubjectsFunderThis CollectionPublication DateAuthorsTitlesSubjectsFunderProfilesView

    My Account

    LoginRegister

    Information

    Deposit AgreementLicense

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Effect of feed on cholesterol concentration and oxidation products development of longissimus dorsi muscle from Iberian pigs

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    03.03.Effect.of.feed.pdf
    Size:
    205.6Kb
    Format:
    PDF
    Download
    Author
    Rey, A.I.
    Lopez-Borte, C.J.
    Buckley, J.D.
    Keyword
    α-tocopherol
    Cholesterol oxides
    Copper
    Iberian pig
    Membrane fluidity
    Date
    2004
    
    Metadata
    Show full item record
    Statistics
    Display Item Statistics
    URI
    http://hdl.handle.net/11019/552
    Citation
    A.I. Rey, C.J. López-Bote, J.D. Buckley. Effect of feed on cholesterol concentration and oxidation products development of longissimus dorsi muscle from Iberian pigs. Irish Journal of Agricultural and Food Research 43: 69–83, 2004.
    Abstract
    The effect of dietary free-range feeding or supplementation with copper and/or vitamin E in confinement on total cholesterol, neutral and polar lipids and cholesterol oxidation of the longissimus dorsi muscle from Iberian pigs was studied. Free-range fed pigs had higher (P=0.001) contents of γ-tocopherol and lower concentrations of α-tocopherol in the muscle than pigs fed diets supplemented with 100 mg/kg vitamin E. The total cholesterol content of the muscle was not significantly affected by the diets. However, the cholesterol:phospholipid ratio was higher (P<0.05), and consequently the membrane fluidity was lower, in the free-range fed pigs than in the pigs fed in confinement with either copper-supplemented (P<0.05) or vitamin E-supplemented (P<0.01) diets. The proportion of saturated fatty acids in phospholipids was greater (P<0.05) in the free-range fed group, which suggests metabolic regulation to maintain membrane structure. Free-range feeding produced higher levels of free fatty acids (P<0.01), lysophosphatidylcholine (P<0.05) and phosphatidylserine (P<0.01) and lower cholesterol esters (P<0.01) and sphingomyelin (P<0.05) in the muscle than the other groups. The ratios of phosphatidylethanolamine:phosphatidylcholine and sphingomyelin: phosphatidylcholine, which are indicators of membrane fluidity, were not significantly affected in any group. Dietary α-tocopheryl acetate supplementation produced lower β-epoxide (P<0.01), 7β-OH (P<0.05), and total cholesterol oxides (P<0.01) in cooked muscle after refrigerated display than in the other groups. These results indicate that supplementation with dietary α-tocopheryl acetate is more effective in reducing cholesterol oxidation than free-range feeding in cooked muscle from Iberian pigs. In evaluating oxidation, the composition of the muscle and meat treatment have to be considered as well as membrane fluidity.
    Funder
    European Union
    Grant Number
    AIR-CT94-1577
    Collections
    IJAFR, volume 43, 2004
    IJAFR, volume 43, 2004
    Animal & Bioscience

    entitlement

     
    DSpace software copyright © 2002-2017  DuraSpace
    Quick Guide | Contact Us | Send Feedback
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.