ISO INTERNATIONAL STANDARD 15914 First edition 2004-02-01 Animal feeding stuffs Enzymatic determination of total starch content Aliments des animaux - Détermination enzymatique de la teneur totale en amidon I pllleu) Reference number ISO 15914:2004(E) ISO @ ISO 2004 ISO 15914:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's 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 editing. In accepts no liability in this area. AdobeisatrademarkofAdobeSystems 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 the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. (na1ld inn an 5 ISO2004 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 below or IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 i5 Fax + 4122 749 09 47 5 E-mail [email protected] Web www.iso.org Published in Switzerland ii ISo2004-All rights reserved ISO 15914:2004(E) Contents Page Foreword. iv 1 Scope 2 Normative references 3 Terms and definitions.. 4 Principle 5 Reagents . 6 Apparatus 7 Preparationoftest sample 8 Procedure. 9 Calculation and expression of results 10 Precision. 11 Test report. Annex A (informative) Notes on procedure Annex B (informative) Results of interlaboratory test. Bibliography . (na1ld @ Is0 2004 - All rights reserved ISO 15914:2004(E) Foreword 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 technical committee has beer non-governmental, in liaison with isO, also take part in the work. isO collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC 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. 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 for identifying any or all such patent rights. ISO 15914 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 10, Animal feedingstuffs (na1ll Iyudidill iv @ Iso 2004 - All rights reserved INTERNATIONALSTANDARD ISO15914:2004(E) Animal feeding stuffs Enzymatic determination of total starch content 1 Scope This international Standard specifies a method for the enzymatic determination of the total starch content of animal feeding stuffs and raw materials for animal feeding stuffs. The method is also applicable to the determination of the purity of starch. extinction at 340 nm. standard glucose solution and samples can be used. 2Normative references The following referenced documents are indispensable for the application of this document. For dated (na1ld references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Iso 3696:1987, Water for analytical laboratory use Specification and test methods IsO 6498:1998,Animal feeding s