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Nuevas Metodologías Analíticas
para el Estudio y Control
de la Seguridad y Calidad de los Alimentos

The main objective of this program is to provide solutions to problems to be solved at present regarding the safety and quality of food. To this end, analytical methodologies will be developed to allow the identification of compounds regulated under European law legislation which constitute a risk to health or significantly alter the quality of food and other currently unregulated in the absence of appropriate analytical tools but also potentially dangerous to health or degrading the quality of the food.
From these assumptions, the research aims to develop in the program have the following objectives:

1. Development of innovative analytical methodologies for the determination of xenobiotics in foods for which there are maximum allowed levels under current legislation or to set maximum levels expected in the near future. Within this group are industrial contaminants, persistent organic compounds such as PCBs, PCDD / Fs, PBDEs and metals, contaminants from agriculture, as commonly used pesticides, antibiotic residues generated by the treatment of livestock at the beginning of the food chain and small amounts of acrylamide generated during food processing. In all cases, the development of new  and optimized analytical methodologies can be a qualitative step in reducing time and costs (simplification and automation of processes), and validation of these procedures will provide robust analysis of transferable management and development laboratories engaged in routine analysis of these compounds in foods. The research lines to be developed for achieving this objective are:

Determination of persistent organic compounds DDTs, PCBs, PCDD / Fs, PBDEs in fatty foods of animal origin. To develop new miniaturized and rapid methodologies of sample preparation this, in combination with GCXGC-TOF will lead to a rapid and sensitive analytical tool.

Speciation and Bioavailability of trace elements. New methods for rapid sample preparation for determining the species of As, Se and Hg will be developed. The bioavailability of these species by testing in vitro to identify the transformations of species during the digestion process and the interactions Se / Hg (Essential / toxic) will be addressed. The use of techniques such as coupled HPLC-ICP-MS will allow the identification of species and a better characterization of the metabolism of them.

Determination of pollutants of agricultural origin as commonly used pesticides in fruits. Miniaturized methods for rapid and accurate determination of triazine, organophosphate and pyrethroid pesticides at levels below the maximum levels set by the legislation will be developed and validated.

Determination of macrolide antibiotic residues in milk and dairy products associated with the treatment of livestock. New selective MIPs for antibiotics will be developed to enable preparation of a sample in one step. Its use in combination with HPLC-MS/MS (ITD) will provide a new analytical methodology for the rapid determination of these xenobiotics.

Development of new analytical methods for treatment of samples based on the MSPD for the determination of macrolide antibiotics (erythromycin, oleandomycin, roxitromicyn, josamycin, spiramycin, tylosin and ivermectin) in milk and cheese.

Coupling microcolumns stuffed with MIP's (antibiotics) with liquid chromatography, to isolate, identify and continuously preconcentrate analytes from a matrix in a fast and appropriate way.

Determination of acrylamide generated during processing of foods of plant origin. Development of new sample preparation methods based on the use of cartridges of solid phase extraction (SPE) coupled on-line, which will result in greater speed and robustness of the process by eliminating of any manipulation of the extract. Combined with HPLC-MS or CE-MS will provide a fast, simple and accurate method for its application in routine analysis.

2. Development of new analytical methodologies for the determination of amino acids, peptides and proteins in food. Peptides, amino acids and proteins which addition to food is prohibited by current legislation, are considered as food adulteration. Besides, these compounds can produce allergic reactions and infectious in humans and those of particular relevance for being involved in the adsorption of essential metals will be studied. In this case, the methodologies developed, which will also include new strategies for optimization and validation, will be available to the government to control the safety and quality of these foods. Also, they will allow the advance in the characterization of mechanisms of toxicity of metals and metal-protein or metal-peptide interactions. The research lines that will be developed for achieving this objective are:

Enantiomeric analysis of chiral amino acids in food to detect adulteration or control the treatment they were subjected to during their production.

Characterization of active peptides in food and their binding to metals. Study of metal-protein interaction as a mechanism favouring the adsorption of metals by living organisms.

Determination of proteins which maximum levels in food are regulated by law and which are potential allergens. The addition of soy protein to more than 30,000 food products and the existence of legislation that control the levels that can be added to foods, along with its allergenicity, causes the need to develop new analytical methodologies to overcome the limitations of existing immunochemical methods (AOAC) or HPLC already developed in this type of product, according to their process and how to add soy protein.

Characterization of specific glycoproteins constituent of the matrix of biofilms. They allow, in the processing facilities, the persistence of pathogens that can be incorporated into foods, despite conventional practices for cleaning and disinfection.

 

 
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