Milk and milk products - Determination of benzoic acid and sorbic acid contents

ISO 9231|IDF 139:2008 specifies a method for the determination of the benzoic and sorbic acid contents in milk and milk products. The method is applicable to milk, dried milk, yogurt and other fermented milks, and cheese and processed cheese, and is suitable for measuring the contents of both compounds at levels of more than 5 mg/kg.

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Main informations

Collections

National standards and national normative documents

Publication date

October 2008

Number of pages

15 p.

Reference

NF ISO 9231

ICS Codes

67.100.01 Milk and milk products in general

Classification index

V04-146

Print number

1 - 30/09/2008

International kinship

ISO 9231:2008

Sumary

Milk and milk products - Determination of benzoic acid and sorbic acid contents

ISO 9231|IDF 139:2008 specifies a method for the determination of the benzoic and sorbic acid contents in milk and milk products.

The method is applicable to milk, dried milk, yogurt and other fermented milks, and cheese and processed cheese, and is suitable for measuring the contents of both compounds at levels of more than 5 mg/kg.

Table of contents

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Avant-propos
iv
Avant-propos
v
1 Domaine d'application
1
2 Références normatives
1
3 Termes et définitions
1
4 Principe
1
5 Réactifs
1
6 Appareillage
3
7 Échantillonnage
3
8 Préparation de l'échantillon pour essai
3
8.1 Yaourt et autres laits fermentés
3
8.2 Autres produits laitiers
4
9 Mode opératoire
4
9.1 Précipitation des graisses et des protéines et clarification
4
9.2 Chromatographie liquide à haute performance (CLHP)
4
10 Calcul et expression des résultats
5
10.1 Calcul
5
10.2 Expression des résultats
5
11 Fidélité
5
11.1 Essais interlaboratoires
5
11.2 Répétabilité
5
11.3 Reproductibilité
5
12 Rapport d'essai
6
Annexe A (informative) Essais interlaboratoires
7
Bibliographie
9

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