SELECTED SKELETAL ALTERATIONS TO IMPROVE TENDERNESS OF BEEF ROUND MUSCLES

Bone (shaft ofischium, 4th/5th sacral vertebrae) and connective tissues at the round/loin junction of one randomly selected side of each of five beef carcasses (no roll, typical of US Select, 322±24 kg) were cut 45 min postmortem (Tender-cutTM), while companion sides served as the controls. Carcasses were suspended conventionally and chilled for 24 h. Vastus lateralis (VL), Rectus femoris (RF), and Vastus medialis (VM) muscles were removed to determine the effect of this treatment on sarcomere length, shear force, fragmentation index, collagen solubility, thawing loss, and cooking loss. The TendercutTMtreatment resulted in longer (P 0.05). No difference (P > 0.05) were determined between the control and tendercutTMsteaks in collagen solubility, thawing loss, cooking loss, percentage fat and moisture content.

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