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BS EN 17504:2022

BS EN 17504:2022

$142.49

Animal feeding stuffs: Methods of sampling and analysis. Determination of gossypol in cotton seed and feeding stuff by LC-MS/MS

Published By Publication Date Number of Pages
BSI 2022 24
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This document specifies a method for the determination of free gossypol, extractable by acidified acetonitrile/water, in cottonseed, cottonseed products and compound feeds by liquid chromatography with tandem mass spectrometry (LC-MS/MS). The method described in this document has been successfully validated in the range of 69 mg/kg to 5 950 mg/kg by collaborative trial in the following matrices: cottonseed, cottonseed products (cake/meal, hulls) and compound feeds for bovine, porcine and poultry. NOTE It is possible to reach quantification limits of approximatively 5 mg/kg in compound feeds. The method might be applicable at lower and at higher concentrations than the concentration range validated in the collaborative trial. However, this needs to be assessed by in-house validation.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
9 6 Apparatus
10 7 Procedure
7.1 General
7.2 Sample pre-treatment
11 7.3 Test portion
7.4 Extraction
12 8 LC-MS/MS analysis
8.1 General
13 8.2 Analysis sequence
9 Results
9.1 Identification
14 9.2 Quantification
16 10 Precision
10.1 General
10.2 Repeatability
10.3 Reproducibility
17 11 Test report
18 Annex A (informative)Precision data
20 Annex B (informative)Example of LC-MS/MS conditions
B.1 General
B.2 HPLC conditions
21 B.3 MS conditions
22 Annex C (informative)Example chromatogram gossypol in compound feed

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BS EN 17504:2022
$142.49