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BS 5766-19:2000

Current
Current

The latest, up-to-date edition.

Methods for analysis of animal feeding stuffs Determination of starch content. Polarimetric method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-15-2000

Defines a procedure for the polarimetric determining of the starch content of animal feeding stuffs and raw materials for animal feeding stuffs. Does not apply to products, which, in addition to starch, contain optically active substances, and do not dissolve in 40% ethanol.

This International Standard specifies a method for the polarimetric determination of the starch content of animal feeding stuffs and raw materials for animal feeding stuffs.

The method is not applicable to products which, besides starch, contain other substances which are optically active during the analysis and do not dissolve in 40 % ethanol. Examples of these products are potato pulp, beet chips, beet leaves, beet tops, yeast, soya products, lupine and products rich in inulin (e.g. chicory roots and Jerusalem artichokes). In these cases an enzymatic determination of the starch content may be used.

This method is not applicable for the quantification of starch with an amylose content exceeding 40 % (e.g. high amylose maize starch like Hylon VII).

CAUTION – Depending on the intensity of the heat/moisture treatment the product has been subjected to, too low a starch content may be determined.

Committee
AW/10
DevelopmentNote
Also numbered as ISO 6493 Supersedes 97/715169 DC (08/2004)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 5725-1:1994 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 3310-1:2016 Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth
ISO 6497:2002 Animal feeding stuffs Sampling
ISO 10520:1997 Native starch — Determination of starch content — Ewers polarimetric method
ISO 5725-2:1994 Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 6498:2012 Animal feeding stuffs — Guidelines for sample preparation
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
DIN 10300-1:1971-05 DETERMINATION OF CRUDE STARCH CONTENT, HYDROCHLORIC ACID METHOD

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