title: Use of computed tomography to study raw ham properties and predict salt content and distribution during dry-cured ham production.
abstract: Varying salt content in hams of equal brand is a major challenge for Norwegian dry-cured ham producers. This study was thus undertaken to test existing computed tomography (CT) calibration models for salt on entire hams, regarding predictability of salt content at different processing times including final ham and to study salt distribution during processing of dry-cured ham. Twenty-six hams were scanned by computed tomography (CT) 11 times during dry-curing for this purpose. However, previously established calibration models had to be adjusted as they overestimated salt in dry samples. Prediction of ultimate salt content was more accurate approaching the end of the dry-curing process (RMSEP=0.351-0.595% salt). Inclusion of remaining weight loss improved the prediction accuracy in un-dried samples by approximately 0.1% NaCl. The prediction errors were sufficiently low to be of practical interest.
authors.affiliation: Animalia, P.O. Box 396 Økern, NO-0513 Oslo, Norway; Nofima Mat, Osloveien 1, NO-1430 Ås, Norway. torunn.haseth@animalia.no
authors.forename: Torunn T
authors.initials: TT
authors.lastname: Håseth
authors.forename: Oddvin
authors.initials: O
authors.lastname: Sørheim
authors.forename: Martin
authors.initials: M
authors.lastname: Høy
authors.forename: Bjørg
authors.initials: B
authors.lastname: Egelandsdal
mesh_terms: D000818:Animals; D003890:Desiccation; D005511:Food Handling / Q000379:methods; D005519:Food Preservation / Q000379:methods*; D008461:Meat Products / Q000032:analysis*; D012492:Salts / Q000032:analysis*; D017673:Sodium Chloride, Dietary / Q000032:analysis; D013552:Swine; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D012492:Salts; D017673:Sodium Chloride, Dietary