1666086

AATCC 103-2009

Bacterial Alpha-Amylase Enzymes Used in Desizing, Assay Of

standard by American Association of Textile Chemists and Colorists ,

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Full Description

1. Purpose and Scope

1.1 This test method is intended for the assay of bacterial amylases employed commercially for textile desizing. It is not applicable to products which contain beta-amylase in addition to alpha-amylase.

2. Principle

2.1 Dextrogenic amylase activity is measured in terms of digestion time required to produce a color change denoting a definite stage of dextrinization of the starch substrate. The amylase content of the sample, expressed in Bacterial Amylase Units (BAU), is readily calculated from the dextrinizing time.

 

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Document History

  1. AATCC 103-2019


    Bacterial Alpha-Amylase Enzymes Used in Desizing, Assay Of

    • Most Recent

  2. AATCC 103-2013


    Bacterial Alpha-Amylase Enzymes Used in Desizing, Assay Of (Reaffirmed - 2013)

    • Historical Version

  3. AATCC 103-2009

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    Bacterial Alpha-Amylase Enzymes Used in Desizing, Assay Of

    • Historical Version

  4. AATCC 103-2004


    Bacterial Alpha-Amylase Enzymes Used in Desizing, Assay Of

    • Historical Version