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  • EN ISO 11213:1995

    Current The latest, up-to-date edition.

    Modified starch - Determination of acetyl content - Enzymatic method (ISO 11213:1995)

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    Published date:  26-01-1995

    Publisher:  Comite Europeen de Normalisation

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    Table of Contents - (Show below) - (Hide below)

    Foreword
    1 Scope
    2 Normative references
    3 Principle
    4 Reagents and materials
    5 Apparatus
    6 Preparation of the sample
    7 Procedure
    8 Expression of results
    9 Precision
    10 Test report
    Annex A (informative) Derivation of equation for calculation
             of acetyl content
    Annex B (informative) Statistical results of the interlaboratory
             test
    Annex C (informative) Bibliography
    Annex ZA (normative) Normative references to international
             publications with their relevant European publications

    Abstract - (Show below) - (Hide below)

    Applies to modified starch, both granular and soluble in cold water. The methods specified enable to measure total and free acetyl contents; bound acetyl content is calculated as the difference of the two values. Total content is determined by heating the sample with dilute hydrochloric acid and converting the acetate with adenosine-5-triphosphate (ATP) and coenzyme A (CoA) to acetyl-CoA. The methods are suitable for determining acetyl contents up to 2 % (m/m).

    General Product Information - (Show below) - (Hide below)

    Committee CEN/BT
    Document Type Standard
    Publisher Comite Europeen de Normalisation
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 1666:1996 Starch Determination of moisture content Oven-drying method
    ISO 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
    ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
    EN ISO 1666:1997 Starch - Determination of moisture content - Oven-drying methods (ISO 1666:1996)
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