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Comparison of the color stability and lipid oxidative stability fo fresh and vacuum packaged lamb muscle containing elevated omega-3 and omega-6 fatty acid levels from dietary manipulation

Ponnampalam, Eric, Trout, Graham, Sinclair, Andrew, Egan, Adrian and Leury, Brian 2001-06, Comparison of the color stability and lipid oxidative stability fo fresh and vacuum packaged lamb muscle containing elevated omega-3 and omega-6 fatty acid levels from dietary manipulation, Meat science, vol. 58, no. 2, pp. 151-161.

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Field of Research 111199 Nutrition and Dietetics not elsewhere classified
Title of article Comparison of the color stability and lipid oxidative stability fo fresh and vacuum packaged lamb muscle containing elevated omega-3 and omega-6 fatty acid levels from dietary manipulation
Author(s) Ponnampalam, Eric
Trout, Graham
Sinclair, Andrew
Egan, Adrian
Leury, Brian
Journal name Meat science
Volume number 58
Issue number 2
Publication date 2001-06
Start page 151
End page 161
Place of publication Barking, England
Publisher Applied Science Publishers
ISSN 0309-1740
1873-4138
Keyword(s) lamb
diets
omega-3 fatty acid
omega-6 fatty acid
lipid oxidation
color stability
Language eng
Summary A series of three experiments were conducted with second cross ([Merino×Border Leicester]×Poll Dorset) wether lambs to evaluate the effects of dietary treatments on manipulation of muscle long-chain (LC) omega-3 fatty acids (FA) on the color stability and oxidative stability of fresh and vacuum packaged lamb. At the end of 7-, 6- and 6-week experimental periods for experiments (Exp.) 1–3 respectively, lambs were slaughtered at a commercial abattoir. At 24 h post-mortem, muscle longissimus lumborum (LL) and longissimus thoracis (LT) were removed and evaluated for color and lipid oxidative stability under specified commercial storage and display condition. Of the dietary supplements used, fish meal and fish oil moderately (P<0.01) and markedly (P<0.001) increased muscle omega-3 FA content, while both protected canola seed (P<0.001) and protected sunflower meal protein significantly (P<0.02) increased muscle omega-6 FA content or ratio of omega-6/omega-3 of the longissimus muscle. In all experiments, the substantial increase (P<0.001) in muscle LC omega-3 and omega-6 FA had no consistent significant effect on color values (redness (a*), yellowness (b*) and lightness (L*)) for fresh and vacuum packaged lamb over a 6-day display period. Lipid oxidation, determined by the levels of thiobarbituric acid reactive substances (TBARS) indicated the enrichment of muscle polyunsaturated fatty acid (PUFA) levels in lambs did not produce significant differences resulting either from main treatment effects or for treatment×day×type interactions (where type was fresh and vacuum packaged). Present results demonstrated the color and lipid oxidative stability of lamb longissimus muscle during refrigerated display was not affected by enhanced levels of omega-3 and omega-6 FA due to dietary treatments.
HERDC Research category C1.1 Refereed article in a scholarly journal
Research Office code 20070536
Copyright notice ©2001, Elsevier Science Ltd.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30009420
 
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