EN ISO 6888-2:2021
(Main)Microbiology of the food chain - Horizontal method for the enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) - Part 2: Method using rabbit plasma fibrinogen agar medium (ISO 6888-2:2021)
Microbiology of the food chain - Horizontal method for the enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) - Part 2: Method using rabbit plasma fibrinogen agar medium (ISO 6888-2:2021)
This document specifies a horizontal method for the enumeration of coagulase-positive staphylococci by counting the colonies obtained on a solid medium (rabbit plasma fibrinogen agar medium) after aerobic incubation at 34 °C to 38 °C (see Reference [10]).
This document is applicable to:
— products intended for human consumption;
— products intended for animal feeding;
— environmental samples in the area of food and feed production and handling;
— samples from the primary production stage.
This horizontal method was originally developed for the examination of all samples belonging to the food chain.
Because of the large variety of products in the food chain, it is possible that this horizontal method is not appropriate in every detail for all products. Nevertheless, it is expected that the required modifications are minimized so that they do not result in a significant deviation from this horizontal method.
Based on the information available at the time of publication of this document, this method is particularly suitable for the examination of fermented products or other products containing technological microbiota based on Staphylococcus spp. (e.g. S. xylosus) (such as cheeses made from raw milk and certain raw meat products) likely to be contaminated by:
— staphylococci forming atypical colonies on a Baird-Parker agar medium;
— background microbiota that can obscure the colonies being sought.
Nevertheless, both ISO 6888-1 and this document are given equivalent status.
Mikrobiologie der Lebensmittelkette - Horizontales Verfahren für die Zählung von koagulase-positiven Staphylokokken (Staphylococcus aureus und andere Spezies) - Teil 2: Verfahren mit Kaninchenplasma-Fibrinogen-Agar-Medium (ISO 6888-2:2021)
Dieses Dokument legt ein horizontales Verfahren für die Zählung von koagulase-positiven Staphylokokken durch die Zählung von Kolonien fest, die nach aerober Bebrütung bei 34 °C bis 38 °C und Koagulase-Bestätigung auf einem festen Medium (Kaninchenplasma-Fibrinogen-Agar-Medium) erhalten wurden (siehe Literaturhinweis [10]).
Dieses Dokument ist anwendbar für:
- Erzeugnissen, die für den menschlichen Verzehr vorgesehen sind;
- Erzeugnissen, die als Futtermittel vorgesehen sind;
- Umgebungsproben im Bereich der Herstellung und Handhabung von Lebensmitteln und Futtermitteln; und
- Proben aus dem Bereich der Primärproduktion.
Dieses horizontale Verfahren wurde ursprünglich dazu entwickelt, alle Proben, die zu einer Lebensmittelkette zählen, zu überprüfen.
Wegen der Vielzahl der Erzeugnisse in der Lebensmittelkette ist es möglich, dass dieses horizontale Verfahren für alle Erzeugnisse nicht bis ins Detail geeignet ist. Dennoch wird erwartet, dass die erforderlichen Modifikationen derart gering gehalten werden, dass sie nicht zu einer erheblichen Abweichung von diesem horizontalen Verfahren führen.
Entsprechend den zum Zeitpunkt der Veröffentlichung dieses Dokuments verfügbaren Informationen gilt dieses Verfahren nicht als (vollständig) geeignet für die Untersuchung von fermentierten Erzeugnissen oder sonstigen Erzeugnissen, die eine auf Staphylococcus spp basierende technologische Flora enthalten (z. B. S. xylosus) (wie z. B. Rohmilchkäse und bestimmte rohe Fleischerzeugnisse), die wahrscheinlich kontaminiert sind durch:
- Staphylokokken, die auf Baird-Parker-Agar-Medium atypische Kolonien bilden; und
- Begleitflora, die die gesuchten Kolonien überdecken kann.
Trotzdem sind ISO 6888 1 und dieses Dokument gleichwertig.
WARNUNG - Zum Schutz der Gesundheit des Laborpersonals ist es wesentlich, die Prüfungen zur Zählung von Staphylokokken nur in angemessen ausgerüsteten Laboren durchzuführen, wobei die Prüfung unter der Leitung eines erfahrenen Mikrobiologen erfolgt, und dass bei der Entsorgung von bebrüteten Materialien mit großer Sorgfalt vorgegangen wird. Anwender dieses Dokuments sollten mit der üblichen Laborpraxis vertraut sein. Dieses Dokument gibt nicht vor, alle unter Umständen mit der Anwendung des Verfahrens verbundenen Sicherheitsaspekte anzusprechen. Es liegt in der Verantwortlichkeit des Anwenders, geeignete Sicherheits- und Gesundheitsmaßnahmen festzulegen.
Microbiologie de la chaîne alimentaire - Méthode horizontale pour le dénombrement des staphylocoques à coagulase positive (Staphylococcus aureus et autres espèces) - Partie 2 : Méthode utilisant le milieu gélosé au plasma de lapin et au fibrinogène (ISO 6888-2:2021)
Le présent document spécifie une méthode horizontale de dénombrement des staphylocoques à coagulase positive par comptage des colonies obtenues en milieu solide (milieu gélosé au plasma de lapin et au fibrinogène) après incubation en aérobiose entre 34 °C et 38 °C (voir la Référence [10]).
Le présent document s’applique aux:
— produits destinés à la consommation humaine;
— produits destinés à l’alimentation des animaux;
— échantillons environnementaux prélevés dans les secteurs de la production et de la distribution des aliments; et
— échantillons prélevés au stade de production primaire.
Cette méthode horizontale a été élaborée à l’origine pour l’examen de tous les échantillons appartenant à la chaîne alimentaire.
En raison de la grande diversité des produits de la chaîne alimentaire, il est possible que cette méthode horizontale ne soit pas entièrement appropriée à tous les produits. Néanmoins, il est attendu que les modifications requises soient réduites le plus possible afin de ne pas s’écarter de manière significative de cette méthode horizontale.
D’après les informations disponibles au moment de la publication du présent document, il convient de recommander cette méthode pour l’examen des produits fermentés ou d’autres produits contenant une flore technologique à base de Staphylococcus spp. (par exemple, S. xylosus) (tels que les fromages à base de lait cru et certains produits à base de viande crue) susceptibles d’être contaminés par:
— des staphylocoques formant des colonies non caractéristiques sur un milieu gélosé de Baird-Parker;
— une flore annexe pouvant masquer les colonies recherchées.
Néanmoins, l’ISO 6888-1 et le présent document bénéficient d’un statut équivalent.
Mikrobiologija v prehranski verigi - Horizontalna metoda za štetje koagulazno pozitivnih stafilokokov (Staphylococcus aureus in drugih vrst) - 2. del: Metoda uporabe agarja z zajčjo plazmo iz fibrinogenov (ISO 6888-2:2021)
Ta dokument določa horizontalno metodo za štetje koagulazno pozitivnih stafilokokov
s štetjem kolonij, pridobljenih z uporabo trdnega medija (agar z zajčjo plazmo s fibrinogeni) po aerobni inkubaciji pri temperaturi med 34 °C in 38 °C (glej vir [10]).
Ta dokument se uporablja za:
– proizvode, namenjene za prehrano ljudi;
– proizvode, namenjene za živalsko krmo;
– okoljske vzorce v območju proizvodnje in ravnanja z živili in krmo;
– vzorce iz faze primarne proizvodnje.
Ta horizontalna metoda je bila prvotno razvita za preiskovanje vseh vzorcev, ki pripadajo
prehranski verigi.
Zaradi velike raznolikosti proizvodov v prehranski verigi morda ta horizontalna metoda v vseh podrobnostih ni v celoti primerna za vse proizvode. Vseeno gre pričakovati, da je število zahtevanih sprememb manjše, s tem pa ni bistvenih odstopanj od te horizontalne metode.
Na podlagi informacij, ki so bile na voljo v času objave tega dokumenta, ta metoda ne
velja za (povsem) primerno za preiskovanje fermentiranih proizvodov ali drugih proizvodov, ki vsebujejo
tehnološko floro na osnovi bakterije Staphylococcus spp. (npr. S. xylosus) (npr. sir iz surovega mleka in določeni izdelki iz surovega mesa) in so lahko kontaminirani s/z:
– bakterijo staphylococci, ki razvije atipične kolonije na Baird-Parkerjevem agarju;
– zaledno floro, ki lahko skrije iskane kolonije.
Vseeno imata standard ISO 6888-1 in ta dokument enakovreden status.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2021
Nadomešča:
SIST EN ISO 6888-2:1999
SIST EN ISO 6888-2:1999/A1:2003
Mikrobiologija v prehranski verigi - Horizontalna metoda za štetje koagulazno
pozitivnih stafilokokov (Staphylococcus aureus in drugih vrst) - 2. del: Metoda
uporabe agarja z zajčjo plazmo iz fibrinogenov (ISO 6888-2:2021)
Microbiology of the food chain - Horizontal method for the enumeration of coagulase-
positive staphylococci (Staphylococcus aureus and other species) - Part 2: Method using
rabbit plasma fibrinogen agar medium (ISO 6888-2:2021)
Mikrobiologie der Lebensmittelkette - Horizontales Verfahren für die Zählung von
koagulase-positiven Staphylokokken (Staphylococcus aureus und andere Spezies) - Teil
2: Verfahren mit Kaninchenplasma/Fibrinogen-Agar (ISO 6888-2:2021)
Microbiologie de la chaîne alimentaire - Méthode horizontale pour le dénombrement des
staphylocoques à coagulase positive (Staphylococcus aureus et autres espèces) - Partie
2 : Méthode utilisant le milieu gélosé au plasma de lapin et au fibrinogène (ISO 6888-
2:2021)
Ta slovenski standard je istoveten z: EN ISO 6888-2:2021
ICS:
07.100.30 Mikrobiologija živil Food microbiology
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 6888-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2021
EUROPÄISCHE NORM
ICS 07.100.30 Supersedes EN ISO 6888-2:1999, EN ISO 6888-
2:1999/A1:2003
English Version
Microbiology of the food chain - Horizontal method for the
enumeration of coagulase-positive staphylococci
(Staphylococcus aureus and other species) - Part 2:
Method using rabbit plasma fibrinogen agar medium (ISO
6888-2:2021)
Microbiologie de la chaîne alimentaire - Méthode Mikrobiologie der Lebensmittelkette - Horizontales
horizontale pour le dénombrement des staphylocoques Verfahren für die Zählung von koagulase-positiven
à coagulase positive (Staphylococcus aureus et autres Staphylokokken (Staphylococcus aureus und andere
espèces) - Partie 2 : Méthode utilisant le milieu gélosé Spezies) - Teil 2: Verfahren mit
au plasma de lapin et au fibrinogène (ISO 6888- Kaninchenplasma/Fibrinogen-Agar (ISO 6888-2:2021)
2:2021)
This European Standard was approved by CEN on 27 April 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6888-2:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 6888-2:2021) has been prepared by Technical Committee ISO/TC 34 "Food
products" in collaboration with Technical Committee CEN/TC 463 “Microbiology of the food chain” the
secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall
be withdrawn at the latest by March 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 6888-2:1999.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN websites.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 6888-2:2021 has been approved by CEN as EN ISO 6888-2:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 6888-2
Second edition
2021-08
Microbiology of the food chain —
Horizontal method for the
enumeration of coagulase-positive
staphylococci (Staphylococcus aureus
and other species) —
Part 2:
Method using rabbit plasma
fibrinogen agar medium
Microbiologie de la chaîne alimentaire — Méthode horizontale
pour le dénombrement des staphylocoques à coagulase positive
(Staphylococcus aureus et autres espèces) —
Partie 2: Méthode utilisant le milieu gélosé au plasma de lapin et au
fibrinogène
Reference number
ISO 6888-2:2021(E)
©
ISO 2021
ISO 6888-2:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2021 – All rights reserved
ISO 6888-2:2021(E)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Principle . 2
4.1 General . 2
4.2 Incubation . 2
4.3 Enumeration . 3
5 Culture media and reagents . 3
6 Equipment and consumables . 3
7 Sampling . 4
8 Preparation of the test sample . 4
9 Procedure (see Figure A.1) . 4
9.1 Test portion, initial suspension and dilutions . 4
9.2 Inoculation and incubation . 4
9.3 Counting of colonies . 5
9.3.1 General description of colonies growing on RPFA medium . 5
9.3.2 Colony counting procedure . 5
10 Expression of results . 5
11 Performance characteristics of the method . 5
11.1 Interlaboratory study . 5
11.2 Repeatability limit . 5
11.3 Reproducibility limit . 6
12 Test report . 7
13 Quality assurance . 7
Annex A (normative) Flow diagram of the procedure . 8
Annex B (normative) Culture media and reagents . 9
Annex C (informative) Results of the interlaboratory study .12
Bibliography .14
ISO 6888-2:2021(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified duri
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