EN ISO 3093:2009/prA1

Overview

EN ISO 3093:2009/prA1 is an amendment to the internationally recognized standard for the determination of the falling number in wheat, rye, their flours, durum wheat, and durum wheat semolina, according to the Hagberg-Perten method. Published by CEN and developed under ISO/TC 34/SC 4, this amendment addresses updated guidance and technical corrections relevant to laboratories performing falling number analysis, including the incorporation of altitude correction procedures.

The falling number method plays a critical role in assessing the alpha-amylase activity in cereal grains and their products - a key quality parameter for the milling, baking, and pasta industries.

Key Topics

• Falling Number Determination: The Hagberg-Perten method measures the time (in seconds) required for a stirrer to fall through a heated, gelatinized slurry of ground grain or flour. This provides an indirect indicator of enzyme activity that relates directly to sample quality and suitability for processing.

• Altitude Correction Procedures: The amendment introduces standardized equations and guidance for correcting falling number results for laboratories situated at higher altitudes, where boiling points are affected and can influence test accuracy.

• Scope and Coverage:

  • Wheat and wheat flour
  • Rye and rye flour
  • Durum wheat and durum wheat semolina

• Annex A: Normative details on equations and procedures for adjusting results based on laboratory altitude, enhancing the reproducibility and comparability of results worldwide.

Applications

The EN ISO 3093:2009/prA1 standard is widely applied in:

• Quality Control in Grain Milling: Ensuring that wheat, rye, and durum wheat products meet processing and end-use requirements, particularly for dough stability and baking performance.
• Commodity Trading: Falling number values are crucial in contracts for cereals, defining product specifications for international trade.
• Pasta and Baking Industries: Selecting raw materials with appropriate enzyme activity to guarantee product consistency, texture, and shelf life.
• Laboratory Standardization: Harmonizing measurement practices across diverse geographies, particularly those at varying altitudes, safeguarding the validity of results against environmental variables.

Related Standards

For comprehensive quality evaluation and harmonization in cereal products, the following standards are relevant:

• ISO 3093:2009: Original international standard detailing the falling number determination method for cereal grains and flours.
• EN ISO 7970: Guidelines for determining moisture content in cereals and cereal products.
• ISO 7305: Standard for the determination of ash content in cereal products.
• ISO 5223: Sieves for testing cereals and milled cereal products.

Practical Value

• Reliable Quality Assessment: The Hagberg-Perten falling number method helps mills, bakeries, and pasta producers identify suitable raw material, minimizing spoilage and economic losses stemming from poor enzyme control.
• Standardization Across Jurisdictions: The inclusion of altitude correction ensures uniform, repeatable results for stakeholders operating in different geographic regions.
• Support for Regulatory Compliance: As a referenced method in many food safety and quality regulations, adherence to this standard facilitates compliance with both national and international requirements.

By aligning laboratory practices with EN ISO 3093:2009/prA1, stakeholders ensure the integrity of their cereal quality assessments, supporting product excellence from farm to finished goods.