DIN EN ISO 18395-2007 Animal and vegetable fats and oils - Determination of monoacylglycerols diacylglycerols triacylglycerols and glycerol by high-performance size-exclusion chrom.pdf
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1、October 2007DEUTSCHE NORM English price group 10No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 67.200.10!$IN“1389043w
2、ww.din.deDDIN EN ISO 18395Animal and vegetable fats and oils Determination of monoacylglycerols, diacylglycerols, triacylglycerolsand glycerol by high-performance size-exclusion chromatography(HPSEC) (ISO 18395:2005)English version of DIN EN ISO 18395:2007-10Tierische und pflanzliche Fette und le Be
3、stimmung von Monoacylglycerinen, Diacylglycerinen, Triacylglycerinen und Glycerindurch Hochleistungs-Grenausschluss-Chromatographie (HPSEC) (ISO 18395:2005)Englische Fassung DIN EN ISO 18395:2007-10www.beuth.deDocument comprises 14 pages DIN EN ISO 18395:2007-10 2 National foreword This standard has
4、 been prepared by Subcommittee SC 11 “Animal and vegetable fats and oils” (Secretariat: BSI, United Kingdom) of Technical Committee ISO/TC 34 “Agricultural food products” (Secretariat: MSZT, Hungary) in collaboration with Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils a
5、nd their by-products Methods of sampling and analysis” (Secretariat: AFNOR, France). The responsible German bodies involved in its preparation were the Normenausschuss Lebensmittel und landwirtschaftliche Produkte (Foodstuffs and Agricultural Products Standards Committee) and the Deutsche Gesellscha
6、ft fr Fettforschung (German Fat Research Society), Joint Committee Analytik von Fetten, len, Fettprodukten, verwandten Stoffen und Rohstoffen. The DIN Standard corresponding to the International Standard referred to in clause 2 and in the bibliography of the EN is as follows: ISO 661 DIN EN ISO 661
7、National Annex NA (informative) Bibliography DIN EN ISO 661, Animal and vegetable fats and oils Preparation of test sample EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 18395August 2007ICS 67.200.10English VersionAnimal and vegetable fats and oils - Determination ofmonoacylglycerols, diacylg
8、lycerols, triacylglycerols and glycerolby high-performance size-exclusion chromatography (HPSEC)(ISO 18395:2005)Corps gras dorigines animale et vgtale - Dterminationde la teneur en monoacylglycrides, en diacylglycrides, entriacylglycrides et en glycrol par chromatographie18395:2005)Tierische und pfl
9、anzliche Fette und le - Bestimmung vonMonoacylglycerinen, Diacylglycerinen, Triacylglycerinenund Glycerin durch Hochleistungs-Grenausschluss-Chromatographie (HPSEC) (ISO 18395:2005)This European Standard was approved by CEN on 26 July 2007.CEN members are bound to comply with the CEN/CENELEC Interna
10、l Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.T
11、his European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are t
12、he national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland
13、 and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 183
14、95:2007: Edexclusion haute performance (CLHP dexclusion) (ISOForeword The text of ISO 18395:2005 has been prepared by Technical Committee ISO/TC 34 “Agricultural food products” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 18395:2007 by Technical Commi
15、ttee CEN/TC 307 “Oilseeds, vegetable and animal fats and oils and their by-products Methods of sampling and analysis”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at
16、the latest by February 2008, and conflicting national standards shall be withdrawn at the latest by February 2008. “Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying a
17、ny or all such patent rights.” According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hun
18、gary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 18395:2005 has been approved by CEN as EN ISO 18395:2007 without any modification
19、s. 2 EN ISO 18395:2007 (E)1 Scope This International Standard specifies a method for the determination of monoacylglycerols, diacylglycerols and triacylglycerols and also free glycerol by high-performance size-exclusion chromatography. It is applicable to products (e.g. emulsifiers) comprising monoa
20、cylglycerols and diacylglycerols as main constituents in concentrations 10 %, and to triacylglycerols in a proportion of 3 %. No response factors at all are employed in the European Pharmacopoeia for acylglycerols. This shall be indicated in the test report. 6 Apparatus Usual laboratory equipment an
21、d, in particular, the following. 6.1 Analytical balance, with a readability of 0,1 mg. 6.2 Volumetric flask, of 10 ml capacity. 6.3 Pipette, of 5 ml capacity. 6.4 Ultrasonic bath. 6.5 HPLC/GPC pump. 6.6 Injector, equipped with a sample loop of 20 l capacity. 6.7 Detector, differential refractometer
22、(RI detector). 6.8 GPC column combination, with an effective molecular mass up to 4 000 Da (e.g. three columns of 300 mm 7,5 mm Plgel2), 5 m, 100 ). It is also possible to use other columns (or column combinations) provided that the separation of the monoacylglycerols and diacylglycerols and also of
23、 the diacylglycerols and triacylglycerols is ensured. The use of only two columns is also possible to achieve the required separation. 1) Available for example from Sigma-Aldrich (http:/ 2) Available for example from Polymer Laboratories (http:/ This information is given for the convenience of users
24、 of this International Standard and does not constitute an endorsement by ISO of these products. 4 EN ISO 18395:2007 (E)6.9 Column oven (column thermostat). 6.10 Data integration and evaluation system. 7 Sampling A representative sample should have been sent to the laboratory. It should not have bee
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