DIFFERENT PROPORTIONS AND TYPES OF MECHANICALLY RECOVERED PORK IN HAMBURGERS

The properties of hamburgers containing 10, 20, and 30% mechanically recovered meat (MRM) from backbones, 20% MRM from leg bones, and 20% MRM from ribs were studied using such parameters as composition, cooking loss, color, sensory analysis, and instrumental texture analysis. Adding more than 10% MRM increased the percentage of water retained during cooking. The presence of MRM caused a significant decrease in the L (lightness) value of the hamburgers and a significant rise in the a (redness) value, in an amount depending on the proportion and type of MRM. When MRM was added, the hardness and firmness of the hamburgers underwent a significant decrease. Sensory analysis indicated that, though adding MRM led to a certain “liver” flavor, a proportion of 10% MRM resulted in organoleptic properties superior to those of hamburgers made exclusively of hand-boned meat.