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ISO 3093:2009

Wheat, rye and their flours, durum wheat and durum wheat semolina -- Determination of the falling number according to Hagberg-Perten

General information

Valid from 30.11.2009
Directives or regulations
None

Standard history

Status
Date
Type
Name
30.11.2009
Main
ISO 3092:2009 specifies the determination of the alpha-amylase activity of cereals by the falling number (FN) method according to Hagberg-Perten.
This method is applicable to cereal grains, in particular to wheat and rye and their flours, durum wheat and its semolina.
This method is not applicable to the determination of low levels of alpha-amylase activity.
By converting the FN 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 FNs necessary to produce a sample of a required FN.

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