What is the Listeria rule?
What is the Listeria rule?
According to the Listeria Rule, Lm is a hazard that establishments producing post-lethality exposed RTE products must control through a HACCP plan or prevent through a Sanitation Standard Operating Procedure (SOP) or a prerequisite program (9 CFR 430.4(a).
What is post-lethality treatment?
Post-lethality treatment: A lethality treatment that is applied or is effective after post- lethality exposure. It is applied to the final product or sealed package of product in order to reduce or eliminate the level of pathogens resulting from contamination from post- lethality exposure.
Is Listeria an indicator organism?
Listeria innocua M1 was developed as a thermal processing indicator organism for L. monocytogenes by selection of a rifampin- and streptomycin-resistant mutant. zetaD values were 5.6 and 5.8 degrees C, and D (68 degrees C) values were 3.8 and 4.9 s for L.
What does post-lethality exposed mean?
Post-lethality exposed product. Ready-to-eat product that comes into direct contact with a food contact surface after the lethality treatment in a post-lethality processing environment.
How do you control Listeria in food plants?
Pests, such as flies, cockroaches, and mice, can easily transport Listeria throughout your facility, so preventative pest control is essential. Listeria can be killed by cooking or pasteurizing the final product and by thermally sanitizing food contact surfaces.
What is the difference between Listeria spp and Listeria monocytogenes?
The key difference between Listeria monocytogenes and Listeria spp is that L. monocytogenes is a foodborne human pathogenic species of the genus Listeria while Listeria spp is a member of the Listeria genus that contains 21 species, including pathogenic L. monocytogenes and non-pathogenic Listeria innocua.
Is Listeria aerobic or anaerobic?
facultative anaerobic bacterium
Listeria monocytogenes is a Gram-positive facultative anaerobic bacterium that is responsible for the disease, listeriosis.
How is Listeria controlled?
Cook until steaming hot left-over foods or ready-to-eat foods, such as hot dogs, before eating. Although the risk of listeriosis associated with foods from deli counters is relatively low, pregnant women and immunosuppressed persons may choose to avoid these foods or thoroughly reheat cold cuts before eating.
What surface kills Listeria?
Chlorine bleach works well to kill bacteria on hard surfaces. For bleach to function properly, however, the surface or item must first be clean. After thoroughly washing food preparation surfaces with hot, soapy water, you can sanitize them with a solution of diluted bleach.
Are there different types of Listeria?
Listeria monocytogenes
Listeria innocuaListeria ivanovii
Listeria/Lower classifications
Is Listeria spp gram-positive or negative?
Listeria monocytogenes is a facultative, intracellular, gram-positive rod that is responsible for causing the infection listeriosis. Listeria causes severe infection in the elderly, neonates and the immunocompromised with only a self-limited gastrointestinal infection in the immunocompetent.
Does Listeria need oxygen?
It is a facultative anaerobic bacterium, capable of surviving in the presence or absence of oxygen. It can grow and reproduce inside the host’s cells and is one of the most virulent foodborne pathogens: 20 to 30% of foodborne listeriosis infections in high-risk individuals may be fatal.