title: Optimisation of a simple and reliable label-free methodology for the relative quantitation of raw pork meat proteins.
abstract: Recent advances in proteomics have become an indispensable tool for a fast, precise and sensitive analysis of proteins in complex biological samples at both, qualitative and quantitative level. In this study, a label-free quantitative proteomic methodology has been optimised for the relative quantitation of proteins extracted from raw pork meat. So, after the separation of proteins by one-dimensional gel electrophoresis and trypsin digestion, their identification and quantitation have been done using nanoliquid chromatography coupled to a quadrupole/time-of-flight (Q/ToF) mass spectrometer. Relative quantitation has been based on the measurement of mass spectral peak intensities, which have been described that are correlated with protein abundances. The results obtained regarding linearity, robustness, repeatability and accuracy show that this procedure could be used as a fast, simple, and reliable method to quantify changes in protein abundance in meat samples.
authors.affiliation: Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Avenue Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: Marta
authors.initials: M
authors.lastname: Gallego
authors.affiliation: Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Avenue Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: Leticia
authors.initials: L
authors.lastname: Mora
authors.affiliation: Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Avenue Agustín Escardino 7, 46980 Paterna, Valencia, Spain.
authors.forename: M Concepción
authors.initials: MC
authors.lastname: Aristoy
authors.affiliation: Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Avenue Agustín Escardino 7, 46980 Paterna, Valencia, Spain. Electronic address: ftoldra@iata.csic.es.
authors.forename: Fidel
authors.initials: F
authors.lastname: Toldrá
mesh_terms: D000818:Animals; D013058:Mass Spectrometry / Q000379:methods*; D008460:Meat / Q000032:analysis*; D010455:Peptides / Q000737:chemistry*; D040901:Proteomics / Q000379:methods*; D013552:Swine
chemical_list: D010455:Peptides
keywords: Label-free; Mass spectrometry; Peak intensity; Proteins; Proteomic; Quantitation; Raw pork meat