ISO 29841:2009 specifies a procedure for the determination of the degradation products pheophytin a, a' and pyropheophytin a of chlorophylls. The method is applicable to vegetable fats and oils only.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample
7.1 Sampling
7.2 Preparation of the test sample
8 Procedure
9 Results of the determination
9.1 Peak identification
9.2 Calculation of the pyropheophytin a content
10 Precision of the method
10.1 Interlaboratory test
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A Example of a typical chromatogram (informative)
Annex B Results of an interlaboratory test (informative)
Annex C Direct HPLC method with fluorescence detection (informative)