Conjugated Linoleic Acid Reduces Lipid Oxidation in Aerobically Stored, Cooked Ground Beef Patties Academic Article uri icon


  • The effect of direct addition of conjugated linoleic acid (CLA) on lipid oxidation was studied. CLA and/or fat trim (4% by weight) were added to the lean trim (96%). Thiobarbituric acid reactive substances (TBARS) were determined on days 0, 3, and 7 for cooked or raw patties stored aerobically at 4°C. Addition of CLA during the grinding process increased CLA isomers in both raw and cooked ground beef and decreased TBARS production (P < 0.01). CLA caused a greater reduction in TBARS over storage time in cooked patties than in raw patties (P = 0.006). The concentrations of 18:2n-6 and CLA isomers decreased with storage time. CLA increased 18:2n-6, whereas most fatty acids were decreased by the addition of CLA. CLA did not affect percentages of fat and moisture, cooking loss, or meat color (L*, a*, b*) (P > 0.60).

author list (cited authors)

  • Chae, S. H., Keeton, J. T., & Smith, S. B.

citation count

  • 23

publication date

  • October 2004