Standard

ISO 3093:2004

Withdrawn

Note: This standard has a new edition: ISO 3093:2009

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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.

Document information

  • Standard from ISO
  • Published:
  • Withdrawn:
  • Edition: 3
  • Version: 1
  • Document type: IS
  • ICS 67.060
  • ISO TC ISO/TC 34/SC 4

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