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The aim of this study was to evaluate the effect of the use of Rosemary Essential Oil (REO) and Lyophilized Rosemary Extract (LRE) on the oxidative stability of pork sausages stored at -12°C. Potential antioxidants in sausages were determined by thiobarbituric acid reactive substances (TBARS) and expressed in mg of malonaldehyde MDA/kg. Measurements were taken one day each week starting from production day until 49 days after. The TBARS values increased over time, starting with a value of 0.45 and ending with 2.89 mg MDA/kg. The control treatment suffered more intense oxidation than those with Sodium Erythorbate (SE) and natural antioxidants. The lipid oxidation of sausage was significantly inhibited at 49 days of frozen storage in the presence of LRE when compared to the control (47.28%). The sausage containing LRE and REO showed a 75.67% and 56.41% acceptance rate, respectively. The LRE exhibited an excellent inhibitory effect on lipid oxidation of sausage and it has potential to use in meat products.

Rosemary Essential Oil and Lyophilized Extract as Natural Antioxidant Source to Prevent Lipid Oxidation in Pork Sausage