Resonance vibration ameliorating tenderness of yak longissimus thoracis et lumborum: A novel physical tenderization technology

Meat Sci. 2022 Sep:191:108860. doi: 10.1016/j.meatsci.2022.108860. Epub 2022 May 19.

Abstract

Physical tenderization technologies for beef have been of particular interest to the meat industry. Here a novel tenderization technology by mechanical resonance vibration was proposed. The fundamental natural frequency (NFf) of the yak longissimus thoracis et lumborum (LTL) was obtained through a hammer impacting on the muscle, and was reported to be 24.89 Hz. The tensile stress and Warner-Bratzler shear force of the yak meat were decreased by using the obtained NFf as the frequency of resonance vibration (RV), and only linear elastic deformation was found in stress-strain behavior of the vibrated meat. The variation of mechanical properties in post-rigor meat is responsible for the disappearance of the M-bands, shortening of the A-bands, and lengthening change in I-bands, rather than of the sarcomere length. The research demonstrated that RV treatment resulted in the M-band disappearance, the extensively detachment of endomysium from the myofibers, and the destruction of the linkages between α-actinin and thin filaments as well as other linkages.

Keywords: Mechanical properties; Microstructures; Nature frequency; Resonance vibration; Tenderization.

MeSH terms

  • Animals
  • Cattle
  • Meat / analysis
  • Muscle, Skeletal* / physiology
  • Sarcomeres
  • Technology
  • Vibration*