Predicting tenderness of fresh ovine semimembranosus using Raman spectroscopy.
A hand held Raman probe was used to predict shear force (SF) of fresh lamb m. semimembranosus (topside). Eighty muscles were measured at 1 day PM and after a further 4 days ageing (5 days PM). At 1 day PM sarcomere length (SL) and particle size (PS) were measured and at 5 days PM, SF, PS, cooking loss (CL) and pH were also measured. SF values were regressed against Raman spectra using partial least squares regression and against traditional predictors (e.g. SL) using linear regression. The best prediction of SF used spectra at 1 day PM which gave a root mean square error of prediction (RMSEP) of 11.5 N (Null = 13.2) and the squared correlation between observed and cross validated predicted values (R(2)cv) was 0.27. Prediction of SF based on the traditional predictors had smaller R(2) values than using Raman spectra justifying further study on Raman spectroscopy.
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.
Stephanie M
SM
Fowler
Research Centre of Food Quality, University of Bayreuth, Kulmbach, Germany.
Heinar
H
Schmidt
Orange Institute of Agriculture, NSW Department of Primary Industries, Orange, Australia.
Remy
R
van de Ven
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.
Peter
P
Wynn
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.
David L
DL
Hopkins
D000818:Animals; D004032:Diet; D006801:Humans; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal; D012756:Sheep; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013314:Stress, Mechanical
Lamb; Meat quality assessment; Raman; Shear force