Home /Effect of the pig rearing system on the final volatile profile of Iberian dry-cured ham as detected by PTR-ToF-MS

Effect of the pig rearing system on the final volatile profile of Iberian dry-cured ham as detected by PTR-ToF-MS

TitleEffect of the pig rearing system on the final volatile profile of Iberian dry-cured ham as detected by PTR-ToF-MS
Publication TypeJournal Article
Year of Publication2013
AuthorsJ del Pulgar, S., Soukoulis C., Carrapiso A. I., Cappellin L., Granitto P., Aprea E., Romano A., Gasperi F., & Biasioli F.
JournalMeat Science
Volume93
Pagination420-428
Accession Number23273445
Keywordsaldehydes, Aldehydes: analysis, Animal Feed, Animal Husbandry, Animal Husbandry: methods, Animals, diet, Dietary Fats, Dietary Fats: analysis, Dietary Fats: pharmacology, Dry cured ham, Ions, Ketones, Ketones: analysis, Mass spectrometry, Mass Spectrometry: methods, meat, Meat: analysis, Nuts, Oleic Acid, Oleic Acid: pharmacology, Poaceae, Proton transfer reaction mass spectrometry, Quercus, Rearing system, subcutaneous fat, Subcutaneous Fat: metabolism, Sulfur Compounds, Sulfur Compounds: analysis, Swine, Switchable reagent ions, Time of flight, Volatile Organic Compounds, Volatile Organic Compounds: analysis
Abstract

The volatile compound profile of dry-cured Iberian ham lean and subcutaneous fat from pigs fattened outdoors on acorn and pasture (Montanera) or on high-oleic concentrated feed (Campo) was investigated by proton transfer reaction time-of-flight mass spectrometry. In addition to the usual proton transfer ionization the novel switchable reagent ions system was implemented which allows the use of different precursor ions (H3O+ , NO+ and O2 + ). The analysis of the lean and subcutaneous fat volatile compounds allowed a good sample discrimination according to the diet. Differences were evident for several classes of compounds: in particular, Montanera hams showed higher concentrations of aldehydes and ketones and lower concentrations of sulfur-containing compounds compared to Campo hams. The use of NO+ as precursor ion confirmed the results obtained with H3O+ in terms of classification capability and provides additional analytical insights.