Raman spectroscopy compared against traditional predictors of shear force in lamb m. longissimus lumborum

Stephanie M Fowler; Heinar Schmidt; Remy van de Ven; Peter Wynn; David L Hopkins

doi:10.1016/j.meatsci.2014.06.042

Raman spectroscopy compared against traditional predictors of shear force in lamb m. longissimus lumborum

Meat Sci. 2014 Dec;98(4):652-6. doi: 10.1016/j.meatsci.2014.06.042. Epub 2014 Jul 5.

Authors

Stephanie M Fowler¹, Heinar Schmidt², Remy van de Ven³, Peter Wynn⁴, David L Hopkins⁵

Affiliations

¹ School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, Australia; Graham Centre for Agricultural Innovation, NSW Department of Primary Industries and Charles Sturt University, Wagga Wagga, Australia. Electronic address: sfowler@csu.edu.au.
² Research Centre of Food Quality, University of Bayreuth, Kulmbach, Germany.
³ Orange Institute of Agriculture, NSW Department of Primary Industries, Orange, Australia.
⁴ School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, Australia; Graham Centre for Agricultural Innovation, NSW Department of Primary Industries and Charles Sturt University, Wagga Wagga, Australia.
⁵ Graham Centre for Agricultural Innovation, NSW Department of Primary Industries and Charles Sturt University, Wagga Wagga, Australia; Centre for Sheep and Red Meat Development, NSW Department of Primary Industries, Cowra, Australia.

PMID: 25089790
DOI: 10.1016/j.meatsci.2014.06.042

Abstract

A Raman spectroscopic hand held device was used to predict shear force (SF) of 80 fresh lamb m. longissimus lumborum (LL) at 1 and 5days post mortem (PM). Traditional predictors of SF including sarcomere length (SL), particle size (PS), cooking loss (CL), percentage myofibrillar breaks and pH were also measured. SF values were regressed against Raman spectra using partial least squares regression and against the traditional predictors using linear regression. The best prediction of shear force values used spectra at 1day PM to predict shear force at 1day which gave a root mean square error of prediction (RMSEP) of 13.6 (Null=14.0) and the R(2) between observed and cross validated predicted values was 0.06 (R(2)cv). Overall, for fresh LL, the predictability SF, by either the Raman hand held probe or traditional predictors was low.

Keywords: Lamb; Meat quality assessment; Raman spectroscopy; Shear force.

Publication types

Comparative Study
Research Support, Non-U.S. Gov't

MeSH terms

Animals
Female
Food Handling
Male
Meat / analysis*
Muscle, Skeletal*
Sheep, Domestic
Spectrum Analysis, Raman*
Stress, Mechanical*
Time Factors