title: Calculating the iodine value for Italian heavy pig subcutaneous adipose tissue from fatty acid methyl ester profiles.
abstract: In this work, different equations were compared as for their effectiveness in predicting the iodine value (IV), based on fatty acid (FA) composition of subcutaneous adipose tissue of Italian heavy pigs. In particular, six equations were tested: AOCS (1); modified AOCS (2), including all unsaturated FA (UFA); regression models obtained using the stepwise regression procedure as variable selection method, calculated considering only UFA (3) or all the FA (4); regression models obtained using the backward elimination procedure, calculated considering only UFA (5) or all the FA (6). The comparison of the equations performance, estimated using an external test set, showed that the use of regression models led to significant enhancements of prediction accuracy with respect to the AOCS equations. Using both equations 4 and 6, the average paired differences between experimental and predicted IV values were not statistically significant. Therefore, it is possible to use these equations for IV estimation of the subcutaneous adipose tissue of Italian heavy pigs.
authors: Department of Life Sciences, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy; Interdipartimental Research Centre for Agri-Food Biological Resources Improvement and Valorisation, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy.
authors: Domenico Pietro
authors: DP
authors: Lo Fiego
authors: Department of Life Sciences, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy; Interdipartimental Research Centre for Agri-Food Biological Resources Improvement and Valorisation, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy. Electronic address: giovanna.minelli@unimore.it.
authors: Giovanna
authors: G
authors: Minelli
authors: Department of Life Sciences, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy; Interdipartimental Research Centre for Agri-Food Biological Resources Improvement and Valorisation, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy.
authors: Luisa Antonella
authors: LA
authors: Volpelli
authors: Department of Life Sciences, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy; Interdipartimental Research Centre for Agri-Food Biological Resources Improvement and Valorisation, University of Modena and Reggio Emilia, Padiglione Besta, Via G. Amendola 2, 42122 Reggio Emilia, Italy.
authors: Alessandro
authors: A
authors: Ulrici
authors: Department of Agricultural and Food Sciences, University of Bologna, Via G. Fanin 44, 40127 Bologna, Italy.
authors: Paolo
authors: P
authors: Macchioni
mesh_terms: D000818:Animals; D001823:Body Composition; D005227:Fatty Acids / Q000032:analysis*; D007455:Iodine / Q000032:analysis*; D007558:Italy; D015233:Models, Statistical; D012044:Regression Analysis; D050151:Subcutaneous Fat / Q000737:chemistry*; D034421:Sus scrofa
chemical_list: D005227:Fatty Acids; D007455:Iodine
keywords: Estimating; Fatty acids; Heavy pig; Iodine value; Regression equations