BS ISO 12871-2010 Olive oils and olive-pomace oils - Determination of aliphatic alcohols content by capillary gas chromatography《橄榄油和橄榄果渣油 毛细管气相色谱法测定脂肪醇含量》.pdf
《BS ISO 12871-2010 Olive oils and olive-pomace oils - Determination of aliphatic alcohols content by capillary gas chromatography《橄榄油和橄榄果渣油 毛细管气相色谱法测定脂肪醇含量》.pdf》由会员分享,可在线阅读,更多相关《BS ISO 12871-2010 Olive oils and olive-pomace oils - Determination of aliphatic alcohols content by capillary gas chromatography《橄榄油和橄榄果渣油 毛细管气相色谱法测定脂肪醇含量》.pdf(22页珍藏版)》请在麦多课文档分享上搜索。
1、BS ISO12871:2010ICS 67.200.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDOlive oils and olive-pomace oils Determination ofaliphatic alcoholscontent by capillarygas chromatographyThis British Standardwas published under theauthority of the StandardsPolicy and
2、 StrategyCommittee on 30 June2010 BSI 2010ISBN 978 0 580 63954 8Amendments/corrigenda issued since publicationDate CommentsBS ISO 12871:2010National forewordThis British Standard is the UK implementation of ISO 12871:2010.The UK participation in its preparation was entrusted to TechnicalCommittee AW
3、/307, Oil seeds, animal and vegetable fats and oils andtheir by products.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct appl
4、ication.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS ISO 12871:2010Reference numberISO 12871:2010(E)ISO 2010INTERNATIONAL STANDARD ISO12871First edition2010-05-01Olive oils and olive-pomace oils Determination of aliphatic alcohols content by capillary gas chroma
5、tographyHuiles dolive et huiles de grignons dolive Dtermination de la teneur en alcools aliphatiques par chromatographie en phase gazeuse sur colonne capillaire BS ISO 12871:2010ISO 12871:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy,
6、 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 editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Sec
7、retariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to e
8、nsure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publica
9、tion 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 below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva
10、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 2010 All rights reservedBS ISO 12871:2010ISO 12871:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and def
11、initions .1 4 Principle1 5 Reagents.1 6 Apparatus.2 7 Sampling.3 8 Preparation of the test sample.3 9 Procedure.4 9.1 Preparation of the unsaponifiable matter .4 9.2 Separation of alcoholic fractions.4 9.3 Preparation of the trimethylsilyl ethers.5 9.4 Gas chromatographic analysis 6 10 Precision.7 1
12、0.1 Interlaboratory test7 10.2 Repeatability 7 10.3 Reproducibility 7 11 Test report8 Annex A (informative) Determination of the linear velocity of the gas .9 Annex B (informative) Results of an interlaboratory test .10 Bibliography11 BS ISO 12871:2010ISO 12871:2010(E) iv ISO 2010 All rights reserve
13、dForeword 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 committees. Each member body interested in a subject for which a
14、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) on all matter
15、s 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 Standards adopted by the technical committees are circulat
16、ed 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 subject of patent rights. ISO shall not be held responsible
17、 for identifying any or all such patent rights. ISO 12871 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 11, Animal and vegetable fats and oils. BS ISO 12871:2010ISO 12871:2010(E) ISO 2010 All rights reserved vIntroduction As part of the Trade standard applying to oliv
18、e oils and olive-pomace oils, the International Olive Oil Council (IOOC) now known as the International Olive Council (IOC) published COI/T.20/Doc. 26:20034. COI/T.20/Doc. 26 was applicable to olive and olive-pomace oils and was used to distinguish between lampante virgin olive oils and crude olive-
19、pomace oils. Olive pomace is the residual paste which still contains a variable amount of water and oil after pressing or centrifuging. In 2008, the IOC submitted the document to ISO/TC 34/SC 11 for adoption as an International Standard. BS ISO 12871:2010BS ISO 12871:2010INTERNATIONAL STANDARD ISO 1
20、2871:2010(E) ISO 2010 All rights reserved 1Olive oils and olive-pomace oils Determination of aliphatic alcohols content by capillary gas chromatography 1 Scope This International Standard specifies a procedure for the determination of the content, as a mass fraction expressed as milligrams per kilog
21、ram, of aliphatic alcohols in olive oils and olive-pomace oils. NOTE This International Standard is based on COI/T.20/Doc. 26:20034. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies.
22、 For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 661, Animal and vegetable fats and oils Preparation of test sample 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aliphatic alcoho
23、ls content sum of the aliphatic alcohols with carbon number C22, C24, C26, and C28, as a mass fraction, determined according to the method specified in this International Standard 4 Principle The oil, to which 1-eicosanol has been added as an internal standard, is saponified with ethanolic potassium
24、 hydroxide and the unsaponifiable matter extracted with diethyl ether. The alcoholic fraction is separated from the unsaponifiable matter by chromatography on a basic silica gel plate; the alcohols recovered from the silica gel are transformed into trimethylsilyl ethers (TMSE) and analysed by capill
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