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BS ISO 23293:2020

BS ISO 23293:2020

$102.76

Milk-based infant formula powders. Quantification of whey protein content by sodium dodecyl sulfate-capillary gel electrophoresis (SDS-CGE)

Published By Publication Date Number of Pages
BSI 2020 20
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This document specifies a method for the determination of the whey to casein protein ratio, ranging from 20:80 to 80:20 in cow milk-based infant formula powders.

This method does not apply to the analysis of infant formulas containing hydrolysed protein or proteins from other sources (e.g. plants or milk from other mammals).

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
9 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
10 6 Apparatus
11 7 Procedure
7.1 Sample preparation
7.2 CGE analysis
12 7.3 Electropherogram processing
7.3.1 Electropherogram integration
7.3.2 Identification of the casein region
8 System suitability
13 9 Calculations and expression of results
9.1 Calculation of whey protein content
9.2 Expression of results
10 Precision
10.1 Interlaboratory tests
14 10.2 Infant formulas with a whey protein content of 40 % or more
10.2.1 Repeatability
10.2.2 Reproducibility
10.3 Infant formulas with a whey protein content below 40 %
10.3.1 Repeatability
10.3.2 Reproducibility
11 Test report
15 Annex A (informative) Example of a CGE analysis
18 Annex B (informative) Precision data
19 Bibliography

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BS ISO 23293:2020
$102.76