The Efficiency of Stabilizing the Oxidative Spoilage of Meat-Containing Products With a Balanced Fat-Acid Composition

Abstract

This paper reports a study of the fatty acid composition of a meat-containing semi-smoked sausage with Peking duck meat that established the biological effectiveness of the product's fat. The rosemary extract application efficiency has been investigated for the course of oxidation processes in a semi-smoked sausage with a high content of unsaturated fatty acids. The high content of the monounsaturated FA C18:1 ω-9 (oleic) has been determined experimentally, 40.37 g/100 g fat. The content of the PUFA ω-3 in a meat-containing semi-smoked sausage made from the meat of Peking duck is 1.22 g/100 g of fat, which satisfies the daily recommended need in essential FA by 27 %. The ratio between the families of the FA w-3/w-6 in the developed products is at least 1:11 at the recommended physiological norms of the perfect fat composition in a meat product of 1:10. The current study has confirmed the high antioxidant activity of rosemary extract and the effective inhibition of the process of lipid oxidation in meat-containing sausages. Introducing a rosemary extract in the amount of 0.02–0.06 % slows down the hydrolytic oxidation of minced meat lipids by 29.13–35.00 %, inhibits the peroxidation of lipids in the meat-containing semi-smoked sausage, thereby reducing the number of peroxides by almost five times. It has been confirmed that stabilizing the peroxidation of lipids in the meat-containing semi-smoked sausage made from Peking duck meat with a high concentration of unsaturated fatty acids should, as a consequence, reduce the concentration of secondary oxidation products. The number of aldehydes and ketones was least at the end of shelf-life of the finished products and was 0.38–0.80 mg MA/kg of the product, which is 2.54–3.94 times lower than that of control sample. The greatest stabilizing effect has been achieved when introducing a rosemary extract in the amount of 0.06 %, which makes it possible to reduce the indicators of oxidative spoilage of fat by more than twice.