title: Prediction of pork quality with near infrared spectroscopy (NIRS): 1. Feasibility and robustness of NIRS measurements at laboratory scale.
abstract: The objective was to study prediction of pork quality by near infrared spectroscopy (NIRS) technology in the laboratory. A total of 131 commercial pork loin samples were measured with NIRS. Predictive equations were developed for drip loss %, colour L*, a*, b* and pH ultimate (pHu). Equations with R(2)>0.70 and residual prediction deviation (RPD)≥1.9 were considered as applicable to predict pork quality. For drip loss% the prediction equation was developed (R(2) 0.73, RPD 1.9) and 76% of those grouped superior and inferior samples were predicted within the groups. For colour L*, test-set samples were predicted with R(2) 0.75, RPD 2.0, colour a* R(2) 0.51, RPD 1.4, colour b* R(2) 0.55, RPD 1.5 and pHu R(2) 0.36, RPD 1.3. It is concluded that NIRS prediction equations could be developed to predict drip loss% and L*, of pork samples. NIRS equations for colour a*, b* and pHu were not applicable for the prediction of pork quality on commercially slaughtered pigs.
authors.affiliation: CCL Nutricontrol, Veghel, The Netherlands. christiaan.kapper@wur.nl
authors.forename: C
authors.initials: C
authors.lastname: Kapper
authors.forename: R E
authors.initials: RE
authors.lastname: Klont
authors.forename: J M A J
authors.initials: JM
authors.lastname: Verdonk
authors.forename: H A P
authors.initials: HA
authors.lastname: Urlings
mesh_terms: D000818:Animals; D003116:Color; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008460:Meat / Q000032:analysis* / Q000592:standards; D015203:Reproducibility of Results; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013552:Swine; D014867:Water / Q000378:metabolism*
chemical_list: D014867:Water