BS-ISO-11866-2-2005.pdf
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1、BRITISH STANDARD BS ISO 11866-2:2005 Milk and milk products Enumeration of presumptive Escherichia coli Part 2: Colony-count technique at 44 C using membranes ICS 07.100.30; 67.100.01 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS ISO
2、11866-2:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 January 2006 BSI 23 January 2006 ISBN 0 580 47493 3 National foreword This British Standard reproduces verbatim ISO 11866-2:2005 and implements it as the UK national standard. It
3、 supersedes BS ISO 11866-3:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AW/5, Milk and milk products, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-ref
4、erences The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards
5、 Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the resp
6、onsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover,
7、 the ISO title page, pages ii to iv, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:15:17 GMT+00:00 200
8、6, Uncontrolled Copy, (c) BSI Reference numbers ISO 11866-2:2005(E) IDF 170-2:2005(E) INTERNATIONAL STANDARD ISO 11866-2 IDF 170-2 Second edition 2005-12-01 Milk and milk products Enumeration of presumptive Escherichia coli Part 2: Colony-count technique at 44 C using membranes Lait et produits lait
9、iers Dnombrement dEscherichia coli prsums Partie 2: Technique par comptage des colonies obtenues sur membranes 44 C BS ISO 11866-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26
10、 03:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committee
11、s. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the Inter
12、national Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International St
13、andards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the sub
14、ject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 11866-2IDF 170-2 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products, and the International Dairy Federation (IDF). It is being published jo
15、intly by ISO and IDF. This edition of ISO 11866-2IDF 170-2 cancels and replaces ISO 11866-3:1997, of which it constitutes a minor revision. ISO 11866-1:1997 has been cancelled and replaced by ISO 7251:2005, Microbiology of food and animal feeding stuffs Horizontal method for the detection and enumer
16、ation of presumptive Escherichia coli Most probable number technique. ISO 11866IDF 170 consists of the following parts, under the general title Milk and milk products Enumeration of presumptive Escherichia coli: Part 1: Most probable number technique using 4-methylumbelliferyl-D-glucuronide (MUG) Pa
17、rt 2: Colony-count technique at 44 C using membranes BS ISO 11866-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword IDF (the International Dairy Federation) is a worldwide federation of the dairy sector with a National Commi
18、ttee in every member country. Every National Committee has the right to be represented on the IDF Standing Committees carrying out the technical work. IDF collaborates with ISO in the development of standard methods of analysis and sampling for milk and milk products. Draft International Standards a
19、dopted by the Action Teams and Standing Committees are circulated to the National Committees for voting. Publication as an International Standard requires approval by at least 50 % of the IDF National Committees casting a vote. Attention is drawn to the possibility that some of the elements of this
20、document may be the subject of patent rights. IDF shall not be held responsible for identifying any or all such patent rights. ISO 11866-2IDF 170-2 was prepared by the International Dairy Federation (IDF) and Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products. It
21、 is being published jointly by IDF and ISO. All work was carried out by the Joint ISO/IDF/AOAC Group of Experts on Pathogenic contaminants (E102), under the aegis of its chairman, Mrs R. Lodi (IT). This edition of ISO 11866-2IDF 170-2 cancels and replaces the former part 3 of IDF 170A:1999, while th
22、e former part 1 has been replaced by ISO 7251:2005. BS ISO 11866-2:2005 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:15:17 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 1 Milk and milk products Enumeration of presumptive Escherichia coli Part 2: Colony-count technique at 44 C using membran
23、es 1 Scope This part of ISO 11866IDF 170 specifies a method for the enumeration of presumptive Escherichia coli by means of a colony-count technique at 44 C. The method is applicable to milk, liquid milk products, dried milk, dried sweet whey, dried buttermilk, lactose, acid casein, lactic casein an
24、d rennet casein, caseinate and dried acid whey, cheese and processed cheese, butter, frozen milk products (including edible ices), and custard, desserts and cream. The method specified in this part of ISO 11866IDF 170 is the preferred method for samples in which comparatively large numbers of presum
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