title: Rapid discrimination of enhanced quality pork by visible and near infrared spectroscopy.
abstract: This study tested the ability of visible and near infrared spectroscopy (Vis-NIRS) to discriminate enhanced quality pork. Vis-NIR spectra were collected on intact chops from 148 pork carcasses using a portable LabSpec®4 spectrometer (350-2500 nm). Partial least squares discriminant analyses based on Vis-NIR spectra correctly classified 94, 95 and 100% of the 2d, and 95, 98 and 100% of the 14 d aged pork samples within Lacombe, Duroc and Iberian pig breeds, respectively. Moreover, Vis-NIRS correctly classified 97 and 99% of the moisture enhanced (ME) and Non-ME pork samples aged for 2d, and 94 and 95% of those aged for 14 d, as well as 94 and 97% of the 2 and 14 d aged pork samples, respectively. Conversely, Vis-NIRS technology could not differentiate pork samples based on pre-slaughter diet or post-slaughter carcass chilling process. Vis-NIRS can segregate enhanced quality pork according to production factors and post-mortem strategies such as pig breed, moisture enhancing and ageing period.
authors.affiliation: Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-10 Agriculture/Forestry Centre, Edmonton, Alberta T6G 2P5, Canada; Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada. Electronic address: nuria.prieto@agr.gc.ca.
authors.forename: N
authors.initials: N
authors.lastname: Prieto
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Juárez
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: I L
authors.initials: IL
authors.lastname: Larsen
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada; Livestock Gentec, Edmonton, Alberta T6G 2C8, Canada.
authors.forename: Ó
authors.initials: Ó
authors.lastname: López-Campos
authors.affiliation: Department of Agricultural, Food and Nutritional Science, University of Alberta, 4-10 Agriculture/Forestry Centre, Edmonton, Alberta T6G 2P5, Canada.
authors.forename: R T
authors.initials: RT
authors.lastname: Zijlstra
authors.affiliation: Lacombe Research Centre, Agriculture and Agri-Food Canada, 6000 C&E Trail, Lacombe, Alberta T4L 1W1, Canada.
authors.forename: J L
authors.initials: JL
authors.lastname: Aalhus
mesh_terms: D000818:Animals; D001947:Breeding; D004032:Diet; D016002:Discriminant Analysis; D005511:Food Handling / Q000379:methods; D006801:Humans; D016018:Least-Squares Analysis; D000069466:Red Meat / Q000032:analysis*; D012034:Refrigeration; D019265:Spectroscopy, Near-Infrared / Q000379:methods*; D013552:Swine; D014867:Water / Q000032:analysis
chemical_list: D014867:Water
keywords: Discrimination analysis; Enhanced quality; Near infrared spectroscopy; Pork