NMR-detection of methylamine compounds in Atlantic salmon (Salmo salar) subjected to E-beam irradiation. (February 2016)

• Record Type: Journal Article
• Authors: Castejón, D.; García-Segura, J.M.; Herrera, A.; Cambero, M.I.
• Is Part Of: Food control. Volume 60(2016:Feb.)
• Page Start: 455
• Page End: 460
• Publication Date: 2016-02
• Subjects: Salmon -- Irradiation -- E-beam -- NMR -- Exudate -- Monomethylamine; NMR nuclear magnetic resonance -- TMAO trimethylamine N-oxide -- TMA trimethylamine -- DMA dimethylamine -- MMA monomethylamine -- FA formaldehyde -- HRMAS high resolution magic angle spinning -- FID free induction decay; Food -- Quality -- Periodicals; Food -- Analysis -- Periodicals; Food handling -- Periodicals; Food industry and trade -- Quality control -- Periodicals; Aliments -- Industrie et commerce -- Qualité -- Contrôle -- Périodiques; Aliments -- Qualité -- Périodiques; Aliments -- Analyse -- Périodiques; Hygiène alimentaire -- Périodiques; Food -- Analysis; Food handling; Food -- Quality; Periodicals; Electronic journals; 664.07
• DOI: 10.1016/j.foodcont.2015.08.015
• Languages: English
• ISSNs: 0956-7135

Abstract

Abstract: Exudates and muscles from Atlantic salmon samples, subjected to different E-beam irradiation treatments, have been employed to monitor, through 1 H NMR analysis, the effects of irradiation dose and storage time on methylamine compounds. The three methylamines identified in the spectra, [trimethylamine N-oxide (TMAO), trimethylamine (TMA) and monomethylamine (MMA)], showed significant differences between non-irradiated and irradiated samples. MMA was present in all irradiated samples, and absent from non-irradiated ones. Furthermore, MMA signal intensity was well correlated with the irradiation dose applied and was stable during storage time. Therefore, MMA could be an effective indicator of irradiation in samples of salmon. Highlights: NMR spectra of salmon exudates allow monitoring irradiation and storage effects. Methylamine compounds differ between irradiated and non-irradiated samples. Only irradiated salmon present monomethylamine in 1 HNMR spectra. Monomethylamine signal is dose-dependent and stable during storage. Monomethylamine could be an effective indicator of irradiation in salmon.