title: Raman spectroscopy compared against traditional predictors of shear force in lamb m. longissimus lumborum.
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.
authors.affiliation: 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.
authors.forename: Stephanie M
authors.initials: SM
authors.lastname: Fowler
authors.affiliation: Research Centre of Food Quality, University of Bayreuth, Kulmbach, Germany.
authors.forename: Heinar
authors.initials: H
authors.lastname: Schmidt
authors.affiliation: Orange Institute of Agriculture, NSW Department of Primary Industries, Orange, Australia.
authors.forename: Remy
authors.initials: R
authors.lastname: van de Ven
authors.affiliation: 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.
authors.forename: Peter
authors.initials: P
authors.lastname: Wynn
authors.affiliation: 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.
authors.forename: David L
authors.initials: DL
authors.lastname: Hopkins
mesh_terms: D000818:Animals; D005260:Female; D005511:Food Handling; D008297:Male; D008460:Meat / Q000032:analysis*; D018482:Muscle, Skeletal; D034561:Sheep, Domestic; D013059:Spectrum Analysis, Raman; D013314:Stress, Mechanical; D013997:Time Factors
keywords: Lamb; Meat quality assessment; Raman spectroscopy; Shear force