1. Enterococcus faecalis Bacteriophage 156 Is an Effective Biotechnological Tool for Reducing the Presence of Tyramine and Putrescine in an Experimental Cheese Model
- Author
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Alfonso Hernandez Magadan, Begoña Redruello, María Fernández, Beatriz del Rio, Victor Ladero, Maria Cruz Martin, Miguel A. Alvarez, Esther Sánchez-Llana, Ministerio de Economía y Competitividad (España), Laboratorio Interprofesional Lácteo de Asturias, European Commission, Río Lagar, Beatriz del [0000-0001-8107-1975], Hernández Magadán, Alfonso [0000-0003-2556-7890], Martín, M. Cruz [0000-0003-1975-6775], Ladero Losada, Víctor Manuel [0000-0002-7613-3745], Álvarez González, Miguel Ángel [0000-0001-9607-7480], Río Lagar, Beatriz del, Hernández Magadán, Alfonso, Martín, M. Cruz, Ladero Losada, Víctor Manuel, and Álvarez González, Miguel Ángel
- Subjects
Microbiology (medical) ,Biogenic amines ,Microorganism ,Population ,lcsh:QR1-502 ,Pasteurization ,Tyramine ,biogenic amines ,Microbiology ,tyramine ,Enterococcus faecalis ,lcsh:Microbiology ,law.invention ,Bacteriophage ,Dairy ,03 medical and health sciences ,chemistry.chemical_compound ,bacteriophage ,law ,Putrescine ,putrescine ,Food science ,biocontrol ,education ,Fermentation in food processing ,030304 developmental biology ,Original Research ,0303 health sciences ,education.field_of_study ,biology ,030306 microbiology ,Chemistry ,Biocontrol ,biology.organism_classification ,dairy ,Bacteria - Abstract
Biogenic amines (BA) - nitrogenous compounds of low molecular weight - are the result of metabolism of certain amino acids. They are biologically present in all living organisms and play essential physiological roles. However, their accumulation in foodstuffs due to the metabolic activity of certain microorganisms represents a toxicological risk. Containing such microorganisms, and with an abundance of precursor substrate amino acids, fermented foods in general, and cheeses in particular, provide an ideal matrix for the accumulation of these toxic compounds. Unfortunately, the main microorganisms responsible for BA accumulation are members of the lactic acid bacteria (LAB) group, which are also essential for the development of the organoleptic characteristics of the final product. The methods used to reduce the BA content of cheese, such as milk pasteurization, commonly fail to do so, and affect desirable non-BA-producing LAB as well. Bacteriophages have been proposed as biotechnological tools for diminishing the presence of undesirable microorganisms in dairy products. Given their specificity, they could be used to target the population of BA-producing bacteria. In this work, we aimed to explore the use of Enterococcus faecalis infecting phages as a tool to reduce the content of BA in dairy products. For this, we proceeded to the isolation and characterization of E. faecalis bacteriophage 156, a member of the family Myoviridae. Its genome was sequenced and compared with that of E. faecalis family Myoviridae phages available in public databases. Its capacity to decrease the accumulation of the BA tyramine and putrescine in an experimental laboratory-scale cheese model was proven., This work was performed with the financial support of the Spanish Ministry of Economy and Competitiveness (AGL2016-78708-R), CSIC (CSIC201770E086 and CSIC201870I091), and by the Government of the Principality of Asturias through the PCTI and the European Union through the European Regional Development Funds (IDI/2018/000114).
- Published
- 2019