title: Determination of Trichinella spiralis in pig muscles using Mid-Fourier Transform Infrared Spectroscopy (MID-FTIR) with Attenuated Total Reflectance (ATR) and Soft Independent Modeling of Class Analogy (SIMCA).
abstract: The aim of this work was to study the feasibility of detection of Trichinella spiralis in swine meat using Middle Infrared Spectroscopy Fourier Transform with Attenuated Total Reflectance (ATR) and Soft Independent Modeling of Class Analogy (MID-FTIR-ATR-SIMCA). Five male Pigs were orally infected at different larvae concentrations (13,000, 6500, 3500, 1625, 812 larvae/pig) and after 24 weeks the animals were euthanized. Five types of muscles were studied (leg, loin, rib, masseter, and diaphragm). Results showed that MID-FTIR-ATR-SIMCA was useful to determine the presence of T. spiralis in the samples, as the interclass distance between infected and non infected muscles varied from 13.5 to 36.8. This technique was also useful to discriminate among pig muscles, where masseter showed the largest interclass distance, while rib presented the smallest one. In all cases the recognition and rejection rates were 100%, which means that the methodology is capable of accurately separating T. spiralis infected from non infected swine meat.
authors.affiliation: Departamento de Graduados e Investigación de Alimentos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala, México DF, Mexico.
authors.forename: Fabián
authors.initials: F
authors.lastname: Gómez-De-Anda
authors.forename: Lidia
authors.initials: L
authors.lastname: Dorantes-Álvarez
authors.forename: Tzayhri
authors.initials: T
authors.lastname: Gallardo-Velázquez
authors.forename: Guillermo
authors.initials: G
authors.lastname: Osorio-Revilla
authors.forename: Georgina
authors.initials: G
authors.lastname: Calderón-Domínguez
authors.forename: Pablo
authors.initials: P
authors.lastname: Martínez Labat
authors.forename: Jorge-Luis
authors.initials: JL
authors.lastname: de-la-Rosa-Arana
mesh_terms: D000818:Animals; D005516:Food Microbiology; D008297:Male; D008460:Meat / Q000382:microbiology*; D018482:Muscle, Skeletal / Q000382:microbiology*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D013552:Swine; D017160:Trichinella spiralis; D014235:Trichinellosis / Q000382:microbiology*