ISO-4833-2003.pdf
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1、 Reference number ISO 4833:2003(E) ISO 2003 INTERNATIONAL STANDARD ISO 4833 Third edition 2003-02-01 Microbiology of food and animal feeding stuffs Horizontal method for the enumeration of microorganisms Colony-count technique at 30 C Microbiologie des aliments Mthode horizontale pour le dnombrement
2、 des micro-organismes Technique de comptage des colonies 30 C Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:05:06 MDTNo reproduction or networking permitted without license
3、from IHS -,-,- ISO 4833:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the edi
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6、 the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address belo
7、w or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2003 All rights reserved Copyright International Organization for Standar
8、dization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:05:06 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4833:2003(E) ISO 2003 All rights reserved iii Foreword ISO (the International Organization
9、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 committees. Each member body interested in a subject for which a technical committee has been established has t
10、he 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 International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Interna
11、tional 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 Standards adopted by the technical committees are circulated to the member bodies for voting. Publicatio
12、n 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 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights
13、. ISO 4833 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 9, Microbiology. This third edition cancels and replaces the second edition (ISO 4833:1991). The following technical changes have been made: subclause 5.2, Plate count agar: an examination of dairy products is i
14、ncluded; Clause 10, Expression of results: precision data are given, and an example of precision data for dairy products. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 08:05:06
15、 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4833:2003(E) iv ISO 2003 All rights reserved Introduction Because of the large variety of food and feed products, this horizontal method may not be appropriate in every detail for certain products. In this case, different
16、 methods which are specific to these products may be used if absolutely necessary for justified technical reasons. Nevertheless, every attempt should be made to apply this horizontal method as far as possible. When this International Standard is next reviewed, account will be taken of all informatio
17、n then available regarding the extent to which this horizontal method has been followed and the reasons for deviations from them in the case of particular products. The harmonization of test methods cannot be immediate, and for certain groups of products International Standards and/or national stand
18、ards may already exist that do not comply with this horizontal method. In cases where International Standards already exist for the product to be tested, they should be followed. It is hoped that when such standards are reviewed, they will be changed to comply with this International Standard so tha
19、t eventually the only remaining departures from this horizontal method will be those necessary for well- established technical reasons. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22
20、/2007 08:05:06 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 4833:2003(E) ISO 2003 All rights reserved 1 Microbiology of food and animal feeding stuffs Horizontal method for the enumeration of microorganisms Colony-count technique at 30 C 1 Scop
21、e This International Standard specifies a horizontal method for the enumeration of microorganisms, by counting the colonies growing in a solid medium after aerobic incubation at 30 C. Subject to the limitations discussed in the introduction, this International Standard is applicable to products inte
22、nded for human consumption or the feeding of animals. The applicability of this International Standard to the examination of certain fermented food and animal feeding stuffs is limited. For the examination of fermented food and animal feeding stuffs, other media and/or incubation conditions might be
23、 more appropriate. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 688
24、7 (all parts), Microbiology of food and animal feeding stuffs Preparation of test samples, initial suspension and decimal dilutions for microbiological examination ISO 7218:1996, Microbiology of food and animal feeding stuffs General rules for microbiological examinations ISO 8261, Milk and milk pro
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