CERELA   05438
CENTRO DE REFERENCIA PARA LACTOBACILOS
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Isolation and Purification of Bacteriocins for the Biopreservation of Dairy Foods
Autor/es:
VERA PINGITORE E.; SESMA F.; PURANIK D.B.
Lugar:
Mysore - India
Reunión:
Congreso; IFCON 2008 - 6th International Food Convention; 2008
Institución organizadora:
Asocation of Foods Scientists and Technologists - Ministry of Food Processing Industry - Central Food Tchnological Researsh Institute - Defense Food Research Laboratory
Resumen:
The demand of food products with fewer synthetic additives but increased safety, quality and shelf-life is rising around the world. These requirements have led to renewed interest in the use of natural antimicrobials to preserve foods. There are a wide range of potential antimicrobials described; however few of them are suitable for their use in food products.The microorganisms have been development different ways to compete in their ecosystem; one of them is the production of antagonistic substances. Some of these substances are the antibiotics, organic acids, hydrogen peroxide and bacteriocins. Biopreservation refers to the extended storage life and enhanced safety of foods using their natural or controlled microflora and/or their antibacterial products (Stiles, 1996). The bacteriocins are antimicrobial peptides ribosomally synthesized produced by bacteria. The interest in these peptides has had an important increase in last decades. The diversity of these inhibitory substances is very great and many bacteriocins have been identified. Particularly the bacteriocins produced by GRAS (Generally regarded as safe) organisms like many lactic acid bacteria (LAB) have an interesting potential to be used in pharmaceutical or veterinary products as well as food preservatives. One of these bacteriocins, nisin, has been approved in several countries for use in different food as a biopreservative agent. Some researches are ongoing for optimization of existing bacteriocins to address both biologic and economic interest, but also searches continue for new and more effective bacteriocins.