NF EN ISO 27971

NF EN ISO 27971

June 2023
Standard Current

Cereals and cereal products - Common wheat (Triticum aestivum L.) - Determination of alveograph properties of dough at constant hydration from commercial or test flours and test milling methodology

This document specifies a method of determining, using an Alveograph, the rheological properties of different types of dough obtained from common wheat flour (Triticum aestivum L.) produced by industrial milling or laboratory milling. It describes the Alveograph test and how to use a laboratory mill to produce flour in two stages: —    stage 1: preparation of the wheat grain for milling to make it easier to separate the bran from the endosperm; —    stage 2: the milling process, including breaking between three fluted rollers, reduction of particle size between two smooth rollers and the use of a centrifugal sieving machine to grade the products.

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Main informations

Collections

National standards and national normative documents

Publication date

June 2023

Number of pages

66 p.

Reference

NF EN ISO 27971

ICS Codes

67.060   Cereals, pulses and derived products

Classification index

V03-170

Print number

1

International kinship

European kinship

EN ISO 27971:2023
Sumary
Cereals and cereal products - Common wheat (Triticum aestivum L.) - Determination of alveograph properties of dough at constant hydration from commercial or test flours and test milling methodology

This document specifies a method of determining, using an Alveograph, the rheological properties of different types of dough obtained from common wheat flour (Triticum aestivum L.) produced by industrial milling or laboratory milling.

It describes the Alveograph test and how to use a laboratory mill to produce flour in two stages:

    stage 1: preparation of the wheat grain for milling to make it easier to separate the bran from the endosperm;

    stage 2: the milling process, including breaking between three fluted rollers, reduction of particle size between two smooth rollers and the use of a centrifugal sieving machine to grade the products.

Replaced standards (1)
NF EN ISO 27971
August 2015
Standard Cancelled
Cereals and cereal products - Common wheat (Triticum aestivum L.) - Determination of alveograph properties of dough at constant hydration from commercial or test flours and test milling methodology

<p>ISO 27971:2015 specifies a method of determining, using an alveograph, the rheological properties of different types of dough obtained from common wheat flour (<i>Triticum aestivum</i> L.) produced by industrial milling or laboratory milling.</p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Principe
  • 5 Réactifs
  • 6 Appareillage
  • 7 Échantillonnage
  • 8 Préparation du blé pour la mouture d'essai
  • 9 Mouture d'essai
  • 10 Préparation et essai à l'alvéographe
  • 11 Fidélité
  • 12 Rapport d'essai
  • Annexe A (informative) Caractéristiques du moulin 5 Les méthodes spécifiées dans le présent document reposent sur l'utilisation du moulin Chopin-Dubois CD1 de CHOPIN Technologies qui est un exemple de produit approprié disponible dans le commerce. Cette information est donnée par souci de commodité à l'intention des utilisateurs du présent document et ne saurait constituer un engagement de l'ISO à l'égard de ce produit. permettant d'obtenir une farine de mouture d'essai
  • Annexe B (normative) Quantité d'eau à ajouter à une masse de blé pour son conditionnement hydrique
  • Annexe C (informative) Exemple de feuille de mouture
  • Annexe D (informative) Tableau de conversion de L en G
  • Annexe E (informative) Données issues de l'essai interlaboratoires et des essais d'aptitude sur farine industrielle
  • Annexe F (informative) Données issues de l'essai interlaboratoires sur farine de mouture d'essai
  • Annexe G (informative) Instructions d'entretien de l'alvéographe
  • Annexe H (informative) Évaluation de l'activité protéolytique dans le blé (T aestivum L.) ou la farine
  • Bibliographie
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