Journal
MEAT SCIENCE
Volume 92, Issue 1, Pages 16-23Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2012.03.015
Keywords
Very fast chilling; Lamb meat; Tender
Categories
Funding
- Meat and Livestock Australia
- Meat Industry Research Institute New Zealand Inc (MIRINZ Inc)
- Meat & Wool New Zealand
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A study was undertaken to determine whether variations within the defined temperature-by-time profile for very fast chilling (VFC), might explain variations in tenderness found with VFC. Loins from 32 lambs were subjected to one of five cooling regimes; defined by the average temperature between the meat surface and centre reached at a specific time post mortem. These were: -0.3 degrees C at 22 h (Control), 2.6 degrees C at 1.5 h (Fast(supra-zero)), 0.7 degrees C at 5.5 h (Slow(supra-zero)), -1.6 degrees C at 1.5 h (Fast(sub-zero)) and -2.3 degrees C at 5.5 h (Slow(sub-zero)), respectively. Shear force values considered very tender by consumers (less than 50 N, MIRINZ tenderometer) were found 2 days post mortem in Fast(sub-zero) loins only. Both time and temperature at the end of the cooling period contributed to variations in shear force. To achieve low shear force, the loins needed to be cooled to less than 0 degrees C at 1.5 h post mortem. (C) 2012 Elsevier Ltd. All rights reserved.
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