BS ISO 18363-1-2015 Animal and vegetable fats and oils Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC MS Method using fast alkaline transesterifica .pdf
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1、BSI Standards PublicationBS ISO 18363-1:2015Animal and vegetable fats andoils Determination of fatty-acid-bound chloropropanediols(MCPDs) and glycidol by GC/MSPart 1: Method using fast alkalinetransesterification and measurement for 3-MCPD and differential measurement forglycidolBS ISO 18363-1:2015
2、BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 18363-1:2015.The UK participation in its preparation was entrusted to TechnicalCommittee AW/307, Oilseeds, animal and vegetable fats and oils andtheir by-products.A list of organizations represented on this commit
3、tee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 82000 7ICS 67.200.10Co
4、mpliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2015.Amendments issued since publicationDate Text affectedBS ISO 18363-1:2015 ISO 2015Animal and vegetable
5、fats and oils Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS Part 1: Method using fast alkaline transesterification and measurement for 3-MCPD and differential measurement for glycidolCorps gras dorigines animale et vgtale Dtermination des esters de chloropropaned
6、iols (MCPD) et dacides gras et des esters de glycidol et dacides gras Partie 1: Mthode par transestrification alcaline rapide et mesure pour le chloro-3 propane-1,2-diol (3-MCPD) et par mesure diffrentielle pour le glycidolINTERNATIONAL STANDARDISO18363-1First edition2015-08-15Reference numberISO 18
7、363-1:2015(E)BS ISO 18363-1:2015ISO 18363-1:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015, Published in SwitzerlandAll rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electroni
8、c or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Ge
9、neva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copyrightiso.orgwww.iso.orgBS ISO 18363-1:2015ISO 18363-1:2015(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Reagents 35.1 General . 35.2 Standard and reference compounds 35.3 Solvents
10、 . 35.4 Other reagents . 36 Apparatus . 47 Sample . 47.1 Sampling . 47.2 Preparation of the test sample 48 Procedure. 58.1 Spiking with surrogate standard and homogenization 58.2 Ester cleavage and glycidol transformation . 58.3 Matrix clean up . 58.4 Derivatization . 58.5 Gas chromatography/mass sp
11、ectrometry references . 69 Expression of results 610 Precision . 710.1 Interlaboratory test. 710.2 Repeatability . 810.3 Reproducibility . 811 Test report . 8Annex A (informative) Results of an collaborative trial . 9Bibliography .11 ISO 2015 All rights reserved iiiContents PageBS ISO 18363-1:2015IS
12、O 18363-1:2015(E)ForewordISO (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 committees. Each member body interested in a subje
13、ct 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 International Electrotechnical Commission (IEC
14、) on all matters of 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 no
15、ted. 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
16、 any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of
17、 users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplem
18、entary information.The committee responsible for this document is ISO/TC 34, Food products, Subcommittee SC 11, Animal and vegetable fats and oils.ISO 18363 consists of the following parts, under the general title Animal and vegetable fats and oils Determination of fatty-acid-bound chloropropanediol
19、s (MCPDs) and glycidol by GC/MS Part 1: Method using fast alkaline transesterification and measurement for 3-MCPD and differential measurement for glycidolThe following parts are under preparation: Part 2: Method using alkaline transesterification and measurement for 2-MCPD, 3-MCPD and glycidol Part
20、 3: Method using acid transesterification and measurement for 2-MCPD, 3-MCPD and glycidoliv ISO 2015 All rights reservedBS ISO 18363-1:2015ISO 18363-1:2015(E)IntroductionISO 18363 is a set of International Standards which can be used for the determination of ester-bound MCPD and glycidol. There are
21、currently three International Standards which have been proposed and this introduction is a description of these methods, which can be used by the analyst to decide which methods are suitable for their application. The detailed application of each method is contained within the scope of the individu
22、al method.This part of ISO 18363 is a differential method equivalent to the DGF standard C-VI 18 (10) and identical to AOCS Official Method Cd 29c-13. Briefly, it is based on a fast alkaline catalysed release of 3-MCPD and glycidol from the ester derivatives. Glycidol is subsequently converted into
23、induced 3-MCPD. It consists of two parts. The first part (A) allows the determination of the sum of ester bound 3-MCPD and ester bound glycidol, whereas the second part (B) determines ester-bound 3-MCPD only. Both assays are based on the release of the target analytes 3-MCPD and glycidol from the es
24、ter bound form by an alkaline catalysed alcoholysis carried out at room temperature. In part A, an acidified sodium chloride solution is used to stop the reaction and subsequently convert the glycidol into induced 3-MCPD. Thus, 3-MCPD and glycidol become indistinguishable in part A. In part B, the r
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