Understanding Key Standards for Cereals, Pulses, and Derived Products: Sampling, Gluten, and Dough Quality

Food safety and quality are the cornerstones of trust in the cereal and pulse supply chain, touching everyone from grain handlers to food manufacturers and, ultimately, the health and satisfaction of consumers. With international trade expanding rapidly and consumer demands for transparency at an all-time high, implementing robust food standards is no longer optional—it's a must for organizations striving for excellence, compliance, and global competitiveness. In this comprehensive overview, we highlight three critical international standards for the cereals, pulses, and derived products sector, exploring their practical significance and outlining how they contribute to increased productivity, safety, and scalability for your business.

Overview / Introduction

The cereals and pulses industry serves as a foundation for global nutrition, providing the staple ingredients in bread, pasta, breakfast foods, snacks, and more. Organisations across the sector face complex challenges—from ensuring representative sampling of incoming grains, to confirming gluten content and assessing the rheological (mixing) properties of doughs. Problems in any of these areas can lead to non-compliance, poor product quality, and increased waste—issues that are preventable with the right food technology standards.

Why Standards Matter in Food Technology

International standards offer a common language and framework, guiding consistent measurement, sampling, and analysis practices. For cereals and pulses, standards:

• Ensure samples truly represent bulk lots (which is vital for fair trading and food safety assessment)
• Guarantee reliable and repeatable gluten determination (especially for wheat flours where gluten properties determine end-product quality)
• Provide clear methodologies to measure flour and dough properties that affect baking performance

By aligning your process with these standards, you mitigate risks around food safety, reduce costly rework or recalibration, and prepare your business for future growth. You’ll also be meeting regulatory expectations and satisfying the quality-conscious demands of today’s customers.

What follows is an in-depth, easy-to-understand look at three pivotal standards that every food business dealing with cereals and pulses should know.

Detailed Standards Coverage

ISO 18390:2025 - Simplified Routine Sampling of Cereals, Pulses, and Cereal Products

Cereals, pulses and cereal products — Sampling — Simplified routine method

Sampling is the foundation of quality control in the cereals and pulses sector. ISO 18390:2025 describes a user-friendly yet reliable routine method for sampling cereals, pulses, and cereal products—whether in the field, in silos, or in manufacturing plants.

This standard applies to both static and dynamic (moving) loads, enabling businesses of all sizes to:

• Collect representative samples for quality analysis (e.g., for mycotoxins, pesticide residues, and other contaminants)
• Ensure compliance with food safety and specification requirements
• Obtain samples for testing of both homogenously and heterogeneously distributed characteristics

Key requirements and specifications:

• Covers sampling by manual and mechanical means
• Specifies the number and mass of incremental samples for different situations (bulk, packaged, milled goods)
• Outlines steps for taking, combining (homogenizing), and reducing samples to laboratory size
• Provides detailed advice on sample packaging, labelling, shipment, and documentation
• Excludes seeds (covered by ISTA) and insect infestation checks (other standards apply)

Who needs to comply:

• Grain traders, mill operators, food processors, storage and logistics companies, labs receiving grain samples
• Anyone needing quality control, regulatory compliance or arbitration samples in cereals or pulses

Practical implications for implementation: ISO 18390 is designed for everyday use—its simplification compared to other reference methods (like ISO 24333) makes it practical for operational staff. While it notes the risk of increased sampling error for some contaminants compared to normative protocols, it provides a sensible compromise for routine use.

Notable features:

• Rigorous hygiene and contamination prevention during sampling
• Special care for static vs. dynamic lots, with clear guidance for each
• Emphasis on sample integrity through all stages

Key highlights:

• Offers a field-ready protocol for routine sampling
• Ensures sample integrity and traceability
• Facilitates reliable quality control and trading decisions

Access the full standard:View ISO 18390:2025 on iTeh Standards

ISO 21415-2:2026 - Wet Gluten and Gluten Index by Mechanical Means

Wheat and wheat flour — Gluten content — Part 2: Determination of wet gluten and gluten index by mechanical means

Gluten quality and quantity are critical for countless wheat-based foods. ISO 21415-2:2026 sets out a mechanical method for determining both the wet gluten content and gluten index of wheat flour and wheat after grinding.

A standardized approach ensures bakers, millers, and food scientists can:

• Reliably assess the strength and elasticity of gluten, which underpins dough and final product quality
• Compare flour batches and wheat lots using quantitative data
• Optimize recipes and select appropriate raw materials for specific product goals (such as bread, pasta, or noodles)

Key requirements and specifications:

• Sampling of flour or ground wheat, with attention to representative sampling and sample homogenization
• Mixing the sample with a precise sodium chloride solution and mechanically washing the dough to extract gluten
• Centrifugation to assess gluten index—the percentage of gluten retained on a defined sieve mesh
• Calculation formulas for wet gluten content and gluten index derived from test results
• Detailed instructions for operating mechanical gluten extraction systems (such as Glutomatic)
• Quality assurance through repeatability, reproducibility, and critical difference tables for results interpretation

Who needs to comply:

• Flour and wheat millers, bakers, food labs, food manufacturers, regulatory agencies

Practical implications for implementation: The standard harmonizes measurements between sites and products, building trust in supply chain agreements based on gluten metrics. The mechanical procedure addresses the inconsistency often observed in manual gluten measurement.

Notable features:

• Applies to both common (Triticum aestivum) and durum (Triticum durum) wheat
• Includes guidelines for sample grinding and homogenization
• Stipulates calibration and operational checks for equipment

Key highlights:

• Promotes consistent, equipment-based results
• Provides quality benchmarks for the bakery and pasta industries
• Supports flour and wheat selection for targeted product functionality

Access the full standard:View ISO 21415-2:2026 on iTeh Standards

ISO 5530-1:2026 - Determination of Water Absorption and Rheological Properties Using a Farinograph

Wheat flour — Physical characteristics of doughs — Part 1: Determination of water absorption and rheological properties using a farinograph

How flour turns into dough—and how that dough behaves—defines product quality. ISO 5530-1:2026 provides the definitive method for measuring both water absorption and the rheological (mixing) properties of wheat flours using a farinograph.

This standard enables organizations to:

• Quantify the amount of water needed to reach doughs of standard consistency
• Measure critical parameters like dough development time, stability, degree of softening, and quality number
• Optimize flour blends and predict performance in baking or food manufacturing
• Compare supplier batches and ensure consistency of finished products

Key requirements and specifications:

• Detailed procedures for both constant flour mass and constant dough mass testing
• Standardized analysis of mixing curves (farinograms), with clear definitions for all rheological indicators
• Tables for flour mass adjustment by moisture content
• Calibration protocols and precision data for repeatability and reproducibility

Who needs to comply:

• Bakeries, flour mills, R&D labs, ingredient suppliers, and food technologists

Practical implications for implementation: This standard allows food companies to validate product performance before running full-scale production, streamline product development, and ensure customer satisfaction by delivering predictable results.

Notable features:

• Delivers actionable data for process adjustment and quality improvement
• Essential for flour specification and acceptance testing
• Supports product innovation with objective, comparable metrics

Key highlights:

• Promotes optimization of dough and finished product quality
• Facilitates troubleshooting and process control
• Drives efficiency and value in cereal-based food production

Access the full standard:View ISO 5530-1:2026 on iTeh Standards

Industry Impact & Compliance

The adoption of formal, recognized standards in the cereals and pulses industry delivers profound and measurable benefits:

• Productivity: Streamlined methods and clear criteria reduce wasted effort, speed up quality control, and optimize logistical operations.
• Security: Ensures food safety is built into every stage, preventing costly recalls and protecting brands.
• Scalability: Standardized processes are easier to expand consistently across new sites, contracts, or products.
• Market Access: International standards are often prerequisites for trade; compliance unlocks new global business opportunities.
• Consumer Confidence: Traceability and quality assurance build reputational advantages in competitive markets.

Compliance considerations:

• Non-compliance can result in rejected shipments, regulatory action, damaged customer relationships, and may even compromise food safety.
• Adherence to ISO standards supports legal conformity for food safety regulations in most countries.
• Third-party certification or audit (against the relevant standards) can further increase market trust and open doors in regulated markets.

Implementation Guidance

Best practices and approaches:

1. Staff Training: Invest in training for sampling, gluten analysis, and dough property measurement, ensuring understanding of technical terms and correct use of equipment (triers, Glutomatic units, farinographs).
2. Documented Procedures: Use clearly documented SOPs based on the standards. This enhances transparency, consistency, and readiness for audits or customer review.
3. Equipment Calibration & Maintenance: Maintain detailed logs of calibration, regular checks, and equipment maintenance to ensure compliance.
4. Sample Traceability: Implement robust sample tracking, labeling, and reporting systems to enable rapid tracebacks when issues arise.
5. Internal Auditing & Benchmarking: Regularly review results for conformity not only with specifications but also against industry benchmarks provided within the standards.
6. Continual Improvement: Track advancements in sampling and analytical methods; update your practices whenever the standards are revised.

Helpful resources:

• The iTeh Standards portal for current standards and updates
• Supplier training and technical support
• Professional bodies in food technology
• National and international food safety authorities

Conclusion / Next Steps

Modern food supply chains demand robust, transparent, and scientifically sound controls. The core standards reviewed here—ISO 18390:2025, ISO 21415-2:2026, and ISO 5530-1:2026—provide just such a framework for cereals, pulses, and derived products.

Organizations that implement these standards not only meet their compliance obligations, but also benefit from improved product quality, greater operational efficiency, and enhanced customer confidence. As demands on food producers increase, having a solid foundation in food technology standards isn’t just beneficial—it’s essential for business continuity and growth.

Recommendations for organizations:

• Review your current practices against these standards for gaps or improvement opportunities
• Invest in appropriate training and equipment
• Prioritize standards-aligned processes from receipt to finished product

For detailed guidance or to access the full versions of these standards, visit iTeh Standards, your trusted resource for authoritative and up-to-date food industry specifications.