Fighting L. monocytogenes with the bioprotective culture B-SF-43.L. monocytogenes is of serious concern in food products in which it can multiply. While the infectious dose is low, the infection may be lethal. Many ready-to-eat processed foods are at risk. Typical foods include cooked meat products that are sliced and packed after cooking, since the normal background flora of lactic acid bacteria The Lactic Acid Bacteria (LAB) comprise a clade of Gram positive, low-GC, acid tolerant, non-sporulating, non-respiring rod or cocci that are associated by their common metabolic and physiological characteristics. would have been killed during any heat treatment. In these cases, the products are very prone to spoilage spoilage decomposition; said of meat, milk, animal feeds especially ensilage. by re-contaminating pathogens. B-SF-43 is a bioprotective culture that significantly prevents the growth of L. monocytogenes. It is a more efficient alternative to chemical additives. B-SF-43 is a single-strain culture consisting of the lactic acid bacteria Leuconostoc carnosum 4010. The strain was selected in a Danish research project supported by the Danish Ministry of Food, Agriculture and Fisheries fisheries. From earliest times and in practically all countries, fisheries have been of industrial and commercial importance. In the large N Atlantic fishing grounds off Newfoundland and Labrador, for example, European and North American fishing fleets have long involving several institutions and meat plants. It is patented by the Danish Meat Research Institute and is sold by Chr. Hansen Chr. Hansen is a Danish food production company. They sell a wide variety of pharmaceutical grade exipients. The group employs approximately 2,500 employees in more than 30 countries and reported revenue of EUR 521m (DKK 3.77m DKK)in 2005/06. Chr. A/S under a licensing agreement. B-SF-43 grows well during cold-storage (2 C to 10 C) and produces two pediocin-like class IIa bacteriocins. In one research project, a large number of commercial vacuum-packed meat products were evaluated. Investigators isolated 72,000 colonies from those 48 packages. In more than 30% of the packages, Leuconostoc carnosum species were naturally occurring in high numbers ([10.sup.6] CFUs per g to [10.sup.7] CFUs per g), often as the dominating species. Leuconostoc carnosum 4010 was the strain with the strongest antagonistic properties when tested against eight different strains of L. monocytogenes. B-SF-43 either stabilizes or reduces the growth of several different L. monocytogenes strains in numerous vacuum- and modified atmosphere-packed meat products, based on a combination of competitive exclusion and bacteriocin bacteriocin /bac·te·rio·cin/ (bac-ter´e-o?-sin) any of a group of substances, e.g., colicin, released by certain bacteria that kill other strains of bacteria by inducing metabolic block. production. The culture can be sprayed onto meat products when they are sliced or cut. Or it can be sprayed directly into the packages before they are closed. Further information. L. H. Stahnke, RDA RDA abbr. recommended daily allowance Recommended Dietary Allowance (RDA) The Recommended Dietary Allowances (RDAs) are quantities of nutrients in the diet that are required to maintain good health in people. Meat and Food Safety, Chr. Hansen A/S, 10-12 Boege Alle, Hoersholm 2970, Denmark; phone: +45 45 74 74 74; fax: +45 45748888; URL URL in full Uniform Resource Locator Address of a resource on the Internet. The resource can be any type of file stored on a server, such as a Web page, a text file, a graphics file, or an application program. : www.chr-hansen.com. |
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