Predicting water-holding capacity of intact chicken broiler breast fillets with Vis/NIR spectroscopy

摘要

The ability of using visible and near-infrared (Vis/NIR) spectroscopy to predict water-holding capacity (WHC) of intact chicken broiler breastfillets (pectoralis major) was assessed in this study. Boneless and skinless chicken fillets (214 in total) were procured from a commercial processing plant and spectra were collected on the skin side of fillets in the whole Vis/NIR spectral range (400-2500 nm). Prediction models for three different WHC indicators (Drip loss, DL; Water gain, WG; Expressible fluid, EF) using Vis/NIR spectroscopy were established through partial least square regression (PLSR) combined with mathematical pre-treatments, such as 1st or 2nd order derivative, standard normal variate (SNV) and multiplicative scatter correction (MSC).Predictive ability of models were assessed by correction coefficient of validation (Rv), root mean square error of validation (RMSEV), ratio performance deviation (RPD) and range error ratio (RER). A medium predictive ability was obtained for DL (Rv=0.78; RPD=1.60; RER=6.98), WG (Rv=0.76; RPD=1.54; RER=6.09) and EF (Rv=0.69; RPD=1.38; RER=6.29). Conclusively, results suggest that Vis/NIR spectroscopy is a useful tool for predicting WHC traits of intact broiler breast fillets; however, the predictive ability is moderately influenced by the reference methods selection.