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Microbiological criteria for wheat flour?

microbiological criteria

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#1 elbochra

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Posted 14 February 2015 - 05:14 PM

hello,

 

can you give me a referential for microbiological criteria to be met wheat flour and what are these criteria

 

best regards



#2 Charles.C

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Posted 14 February 2015 - 07:43 PM

hello,

 

can you give me a referential for microbiological criteria to be met wheat flour and what are these criteria

 

best regards

 

Dear elbochra,

 

http://www.ifsqn.com...indpost&p=77248

(see pg 36/39)

 

Rgds / Charles.C


Edited by Charles.C, 16 February 2015 - 04:21 PM.
link corrected

Kind Regards,

 

Charles.C


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#3 elbochra

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Posted 16 February 2015 - 01:32 PM

hello charles,

 

thank you for your reply and for the link you send me
but the codex does not mentione
- The types of microorganisms to search in flour
- The maximum tolerances of these microorganisms
best regards


#4 cazyncymru

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Posted 16 February 2015 - 02:59 PM

There is nothing in the Codex Standard for Wheat Flour for microbiological limits

 

You need to establish these limits for yourself using historic data, shelf life evaluations etc.

 

At a guess, I would be looking at Salmonella, Bacillus, entros, Y&M

 

I'm sure there are more, but this is where you need to research your product.

 

Caz



#5 Tony-C

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Posted 16 February 2015 - 03:34 PM

Hi there,

 

As previous posts have indicated you will have to do your own assessment:

 

CODEX STANDARD FOR WHEAT FLOUR - CODEX STAN 152-1985
6.3 When tested by appropriate methods of sampling and examination, the product:
– shall be free from micro-organisms in amounts which may represent a hazard to health;
– shall be free from parasites which may represent a hazard to health; and
– shall not contain any substance originating from micro-organisms in amounts which may represent a hazard to health.

 

You may find some useful information in the following links:

PRINCIPLES AND GUIDELINES FOR THE ESTABLISHMENT AND APPLICATION OF MICROBIOLOGICAL CRITERIA RELATED TO FOODS CAC/GL 21 - 1997

Principles and Guidelines for the Conduct of Microbiological Risk Assessment CAC/GL 30 1999

Microbiological quality of wheat flour consumed in Morocco
Standard plate counts (SPC), total and faecal coliforms, Clostridium, Salmonella spp., Shigella spp., Staphylococcus aureus, Listeria monocytogenes, yeast, lactic acid bacteria, and molds, were carried out to assess the microbiological quality of wheat flour. Microbiological interpretation of the criteria was performed according to standards implemented by the Codex Alimentarius Commission. Most frequent counts, in traditional and industrial wheat flour, were total aerobic mesophilic bacteria with an average 4 × 104 and 2.5 × 104 cfu/g, respectively. The results showed higher coliform and fungi counts in house than in commercial samples. Pathogenic flora as Salmonella spp., Shigella spp., S. aureus, L. monocytogenes, and Clostridium were not detected in all investigated samples.

United Nations World Food Programme Technical Specifications for: FORTIFIED WHEAT FLOUR

Regards,

 

Tony
 
 



#6 Charles.C

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Posted 16 February 2015 - 04:04 PM

Dear elbochra,

 

Apologies, wrong link.

 

Post #2 corrected.

(see pg 36/39)

 

Rgds / Charles.C


Kind Regards,

 

Charles.C


#7 elbochra

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Posted 17 February 2015 - 03:27 PM

Thanks to all of you who took time out of your busy days to respond to my question.

It attaches a file that I find on the internetAttached File  FCD-criteres-process-31-10-09.pdf   391.47KB   167 downloads



#8 Tony-C

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Posted 17 February 2015 - 04:00 PM

Thanks to all of you who took time out of your busy days to respond to my question.

It attaches a file that I find on the internetattachicon.gifFCD-criteres-process-31-10-09.pdf

 

I'm sure it's very good! do you have an English version?!

 

My French isn't as good as it used to be but appears to advise on the following criteria:

 

Commodity
1. T45 flour to T65
Flora aerobic 30 ° C max. 100000
Mold max.1000
Escherichia coli max.10
Bacillus cereus max. 100
Salmonella Absence / 25g

2. Flour T80 to T150
Flora aerobic 30 ° C max. 500000
Mold max.5000
Escherichia coli max.10
Bacillus cereus max. 100
Salmonella Absence / 25g

 

Regards,

 

Tony



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#9 elbochra

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Posted 18 February 2015 - 10:06 AM

Unfortunately I don’t have the English version



#10 Charles.C

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Posted 18 February 2015 - 12:41 PM

Dear All,

 

And if you're wondering what the T values mean in Tony's neat translation, see this fascinating exposé  (In English) -

 

http://www.weekendba...ng-flour-types/

 

The above OT'd me to this amazing French viewpoint of the typical English Breakfast (plus some other UK culinary treats). Intended (??) to be gourmet-serious but IMO more like a Mr Bean Special. Not to forget the link to that, apparently well-known Personality,  - Chef Simon. :biggrin:

 

http://www.chezbecky...-en-france.html

(even if you are unfamiliar with French, the English captions / Figs are worth a chuckle)

 

Rgds / Charles.C


Kind Regards,

 

Charles.C


#11 srose

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Posted 19 February 2015 - 03:48 PM

You will find microbiological specifications for flour in the link below - Section K.

 

http://pdfs.findthen...o.uk/16898..pdf

 

If the link will not open, you can find it by searching on Google for: Development and Use of Microbiological Criteria for Foods. This is a pdf document.



#12 Charles.C

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Posted 19 February 2015 - 04:34 PM


If the link will not open, you can find it by searching on Google for: Development and Use of Microbiological Criteria for Foods. This is a pdf document.

 

Dear srose,

 

Thks, opens slowly but does open. :smile:

Getting a bit old but still readable / useful. Probably a precursor to many other texts.

 

Rgds / Charles.C


Kind Regards,

 

Charles.C


#13 Amireshi

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Posted 26 September 2018 - 04:44 AM

if the E.coli limit is <3 MPN/g , is it a ok level??

or it should be ABSENT??



#14 gud2ya

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Posted 26 September 2018 - 09:20 AM

try codex: http://www.fao.org/i...50/CXS_152e.pdf



#15 Charles.C

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Posted 26 September 2018 - 11:04 AM

if the E.coli limit is <3 MPN/g , is it a ok level??

or it should be ABSENT??

 

Hi Amireshi,

 

"Absent" is unmeasurable.

 

<3MPN/g typically, but not absolutely, refers to nil detection in a 3x3 tube analysis using a reference procedure/sample size.

 

"OK"  may depend on (a) context, eg sampling/procedure, (b) yr specification, (c) the meaning of <3 MPN/g

(IIRC <3MPN/g typically, but not absolutely, refers to nil detection in a 3x3 tube MPN analysis using a reference procedure/sample size).

 

Ignoring (a), If your Standard is as Post 8 (which has no "Units" ) the answer is probably complies.

 

@gud2ya,

 

Thks for input but link (Codex) is no help. See posts 3,4,5.


Kind Regards,

 

Charles.C





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