BS-ISO-3976-2006.pdf
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1、BRITISH STANDARD BS ISO 3976:2006 Milk fat Determination of peroxide value ICS 67.100.10 ? Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted w
2、ithout license from IHS -,-,- BS ISO 3976:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2008 ISBN 978 0 580 54299 2 National foreword This British Standard is the UK implementation of ISO 3976:2006. The UK participatio
3、n in its preparation was entrusted to Technical Committee AW/5, Chemical analysis of milk and milk products. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Use
4、rs are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Bo
5、eing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- Reference numbers ISO 3976:2006(E) IDF 74:2006(E) INTERNATIONAL STANDARD ISO 3976 IDF 74 Second edition 2006-03-01 Milk fat Determination of peroxide value Matire grasse l
6、aitire Dtermination de lindice de peroxyde BS ISO 3976:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- i
7、i Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Contents Page Foreword iv 1 Scope 1 2 Terms and definit
8、ions .1 3 Principle1 4 Reagents.1 5 Apparatus .2 6 Sampling.3 7 Preparation of test sample3 7.1 General3 7.2 Anhydrous milk fat, anhydrous butteroil, butteroil, ghee .3 7.3 Butter 4 8 Procedure (see Annex A) .4 8.1 Precautions to avoid oxidation and disturbed recording of extinction.4 8.2 Reagent bl
9、ank 4 8.3 Test sample blank4 8.4 Test portion5 8.5 Extinction coefficient of the red iron(III) complex5 9 Calculation and expression of results.6 9.1 Calculation6 9.2 Expression of test results.7 10 Precision.7 10.1 Interlaboratory test7 10.2 Repeatability.7 10.3 Reproducibility.7 11 Test report7 An
10、nex A (informative) Summary of the procedure and examples of calculations.8 Annex B (informative) Interlaboratory trial.9 Annex C (informative) Comparison trial10 Bibliography13 BS ISO 3976:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licens
11、ee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing
12、 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 the right to be represented on that committee. International organizations, governmental and non-governmental, in liais
13、on with ISO, also take part in the work. ISO collaborates closely with the International 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 te
14、chnical committees is to prepare International Standards. Draft International Standards 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 dr
15、awn 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. ISO 3976IDF 74 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk produc
16、ts, and the International Dairy Federation (IDF). It is being published jointly by ISO and IDF. This edition of ISO 3976IDF 74 cancels and replaces ISO 3976:1977, which has been technically revised. A comparison of the results using the new reagent (methanol/1-decanol/n-hexane mixture) with those fo
17、und using chloroform/methanol is given in Annex C. BS ISO 3976:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS
18、 -,-,- v Foreword IDF (the International Dairy Federation) is a worldwide federation of the dairy sector with a National Committee 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 I
19、SO in the development of standard methods of analysis and sampling for milk and milk products. Draft International Standards adopted by the Action Teams and Standing Committees are circulated to the National Committees for voting. Publication as an International Standard requires approval by at leas
20、t 50 % of the IDF National Committees casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IDF shall not be held responsible for identifying any or all such patent rights. ISO 3976IDF 74 was prepared by the Internationa
21、l Dairy Federation (IDF) and Technical Committee ISO/TC 34, Food products, Subcommittee SC 5, Milk and milk products. It is being published jointly by IDF and ISO. All work was carried out by the Joint ISO-IDF Action Team on Fat, of the Standing Committee on Main components of milk, under the aegis
22、of its project leader, Mr A. van Reusel (BE). This edition of ISO 3976IDF 74 cancels and replaces IDF 74A:1991, which has been technically revised. A comparison of the results using the new reagent (methanol/1-decanol/n-hexane mixture) with those found using chloroform/methanol is given in Annex C.
23、BS ISO 3976:2006 Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- blank Copyright British Standards Institutio
24、n Provided by IHS under license with BSI - Uncontrolled Copy Licensee=Boeing Co/5910770001 Not for Resale, 08/14/2008 22:02:07 MDTNo reproduction or networking permitted without license from IHS -,-,- 1 Milk fat Determination of peroxide value WARNING The use of this International Standard may invol
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