Status : Withdrawn

This standard has been revised by ISO 3093:2009

Abstract

ISO 3093:2004 describes the determination of the alpha-amylase activity of cereals by the Falling Number method according to Hagberg-Perten.

This method is applicable to cereal grains, in particular to wheat and rye and their respective flours, durum wheat and its semolina. For the purposes of ISO 3093:2004, the term "flour" includes semolina and ground grain (wholemeal), the particle sizes of which are defined.

This method is not applicable for the determination of low levels of alpha-amylase activity, which can be carried out in accordance with ISO 7973.

By converting the Falling Number into a Liquefaction Number (LN), it is possible to use this method to estimate the composition of mixtures of grain, flour or semolina with known Falling Number values necessary to produce a sample of a required Falling Number.

General information

  • Status
     : Withdrawn
    Publication date
     : 2004-08
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 3
    Number of pages
     : 13
  • Technical Committee :
    ISO/TC 34/SC 4
    ICS :
    67.060 
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