Perugini M.,University of Teramo |
Visciano P.,University of Teramo |
Manera M.,University of Teramo |
Abete M.C.,National Reference Center for Surveillance and Monitoring of Animal Feed |
And 2 more authors.
Environmental Science and Pollution Research | Year: 2013
The aim of this study was to evaluate mercury and selenium distribution in different portions (exoskeleton, white meat and brown meat) of Norway lobster (Nephrops norvegicus). Some samples were also analysed as whole specimens. The same portions were also examined after boiling, in order to observe if this cooking practice could affect mercury and selenium concentrations. The highest mercury concentrations were detected in white meat, exceeding in all cases the maximum levels established by European legislation. The brown meat reported the highest selenium concentrations. In all boiled samples, mercury levels showed a statistically significant increase compared to raw portions. On the contrary, selenium concentrations detected in boiled samples of white meat, brown meat and whole specimen showed a statistically significant decrease compared to the corresponding raw samples. These results indicate that boiling modifies mercury and selenium concentrations. The high mercury levels detected represent a possible risk for consumers, and the publication and diffusion of specific advisories concerning seafood consumption is recommended. © 2013 Springer-Verlag Berlin Heidelberg.
Standardization of NIR microscopy spectra obtained from inter-laboratory studies by using a standardization cell [Standardisation de spectres de microscopie proche infrarouge obtenus à partir des études inter-laboratoires et en utilisant une cellule de standardisation]
Fernandez Pierna J.A.,Walloon Agricultural Research Center |
Boix Sanfeliu A.,Institute for Reference Materials and Measurements |
Slowikowski B.,Institute for Reference Materials and Measurements |
van Hoist C.,Institute for Reference Materials and Measurements |
And 8 more authors.
Biotechnology, Agronomy and Society and Environment | Year: 2013
The near-infrared microscope (NIRM) is an instrument that has demonstrated its great ability to detect contaminants not by analyzing a single spectrum but rather by analyzing hundreds or thousands of spectra from individual particles, while at the same time being a non-destructive and easy-to-use technique. It has been used for the detection of meat-and-bone meal (MBM) in compound feeds within the context of the European bovine spongiform encephalopathy (BSE; commonly known as "mad cow disease") crisis. This study describes, for the first time, an application of NIRM instrument standardization using a measurement cell in an inter-laboratory study conducted within the framework of a qualitative determination of animal proteins in compound feeds, based on spectra obtained with eight instruments. The standardization cell was assessed for its ability to produce good optical matching of the instruments and/or to evaluate instrument performance.
Marchis D.,National Reference Center for Surveillance and Monitoring of Animal Feed |
Ferro G.L.,National Reference Center for Surveillance and Monitoring of Animal Feed |
Brizio P.,National Reference Center for Surveillance and Monitoring of Animal Feed |
Squadrone S.,National Reference Center for Surveillance and Monitoring of Animal Feed |
Abete M.C.,National Reference Center for Surveillance and Monitoring of Animal Feed
Food Control | Year: 2012
The general term " pesticide" includes a large number of substances that belong to many different chemical classes. Pesticides are applied to crops at various stages of cultivation to provide protection against weeds and pests, and during post-harvest storage to preserve quality. The list of which pesticides are authorized for use in Europe is available on EU pesticides Database. The QuEChERS approach is a method designed for the analysis of pesticides in fruits and vegetables. This method is based on an extraction and clean-up step; it has been designed to be Quick Easy Cheap Effective Rugged and Safe. The aim of this study was to modify the QuEChERS method to be applied in the analysis of 9 organophosphate and 1 pyrethroid pesticides in raw materials for animal feeding introducing an additional liquid-liquid partition step. This additional step allowed us to concentrate the samples, avoiding any solvent evaporation, prior to the instrumental analysis. Once the method was optimized, it was carried out a pesticides quantization study using a GC-MS SIM multi-residue analysis. 45 samples of maize and soy coming from Northern Italy (Piedmont Region) were analysed during ten months. In 30 samples organophosphate pesticides were found up to 12.4 mg kg -1 of Chlorpyrifos, while no Deltamethrin was detected. © 2011 Elsevier Ltd.