Jump to content

  • Quick Navigation
Photo
- - - - -

How often to test for Listeria in finished frozen products?


  • You cannot start a new topic
  • Please log in to reply
3 replies to this topic

#1 hcl

hcl

    Grade - Active

  • IFSQN Active
  • 1 posts
  • 0 thanks
0
Neutral

  • Canada
    Canada

Posted 03 January 2014 - 07:30 PM

Hello everyone,

 

I hope anyone could help me here on this topic. 

 

how often should I collect environmental samples and test Listeria in finished frozen products?

 

Thank you!

 

 

 

 

 



#2 Slab

Slab

    Grade - SIFSQN

  • IFSQN Senior
  • 389 posts
  • 191 thanks
81
Excellent

  • United States
    United States
  • Gender:Male
  • Location:The Heel of the Boot
  • Interests:Reading (history, science fiction), Photography, drawing,food safety, metrology, TQM, hoplology, etc.

Posted 03 January 2014 - 10:32 PM

Hi, hcl;

 

I would recommend testing finished product by lot/batch code for traceability and recall purposes. Not only for L spp. but full micro  

 

As far as environmental do you mean 3rd party or in house swabs (I would recommend full micro at a minimum monthly).


Food Safety News  Marine Stewardship Council

 

"Some people freak out when they see small vertebra in their pasta" ~ Chef John


#3 Tony-C

Tony-C

    Grade - FIFSQN

  • IFSQN Fellow
  • 3,378 posts
  • 1011 thanks
279
Excellent

  • United Kingdom
    United Kingdom
  • Gender:Male
  • Location:Koh Samui
  • Interests:My main interests are sports particularly football, pool, scuba diving, skiing and ten pin bowling.

Posted 09 January 2014 - 04:17 AM

Hello everyone,

 

I hope anyone could help me here on this topic. 

 

how often should I collect environmental samples and test Listeria in finished frozen products?

 

Thank you!

 

Hi HCL,

 

:welcome:

 

Sampling is usually based on risk, history and range of products.

 

As you have suggested it is not unusual to have a monthly schedule to cover all products and areas on rotation. In house pathogen testing is usually only carried out on site if your laboratory is separate from the production facility.

 

If you are starting off I would do increased sampling initially then view the results once you have some history. For environmental sampling you should swab key equipment such as fillers and areas where it is more likely that you will find Listeria such as floors and drains.

 

Regards,

 

Tony



#4 Charles.C

Charles.C

    Grade - FIFSQN

  • IFSQN Moderator
  • 18,229 posts
  • 5111 thanks
1,110
Excellent

  • Earth
    Earth
  • Gender:Male
  • Interests:SF
    TV
    Movies

Posted 10 January 2014 - 01:24 AM

Hello everyone,

 

I hope anyone could help me here on this topic. 

 

how often should I collect environmental samples and test Listeria in finished frozen products?

 

Thank you!

Dear hcl,

 

It may relate to yr product / legislation ?.

 

generically, for the second part, it rather depends on yr spec. of course. And the intended style of yr sampling, eg daily production / accumulated lot. In theory  the lot size is irrelevant but in practice usually not. :smile:

 

Assuming micro. spec is "zero" i suggest you have a look at this analogous thread now also running -

 

http://www.ifsqn.com...ult/#entry67586

 

I also assume you refer to testing env.samples for Listeria. The sampling procedure as indicated by Tony typically involves a focussed risk assessment which will depend on yr own situation. In USA there are some published, detailed official  procedures for certain industries / typical plant lines, eg, from memory, the FSIS requirements have been previously attached on this forum (added - see post #6 of 2nd link below)

 

Some collections of related procedures are here -

 

http://www.ifsqn.com...trg/#entry67055

 

http://www.ifsqn.com...rol/#entry55872

 

Rgds / Charles.C


Kind Regards,

 

Charles.C





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users