Dumas Nitrogen Analysis in Food Protein Determination
                     Dumas Nitrogen 
Analysis in Food 
Protein 
Determination
Submitted by:
M-Kube Enterprise Pty Ltd
Introduction
• Protein content is a key nutritional parameter in food quality 
control.
• Dumas Nitrogen Analysis is a rapid, safe, and accurate 
alternative to Kjeldahl.
• Widely used in dairy, meat, cereals, beverages, and feed 
industries. Powered by modern Dumas Protein Analyzers.
Principle of Dumas Method
• Based on combustion at high temperatures (800–1000 °C).
• Sample nitrogen is converted into nitrogen gas (N₂).
• Nitrogen is measured using a thermal conductivity detector 
(TCD).
• Final protein content = N% × conversion factor.
• Performed using a Dumas Nitrogen Analyzer.
Why Use Dumas 
Protein Analyzers?
• Rapid analysis (< 5 minutes per 
sample)
• No corrosive chemicals 
(environmentally friendly)
• High automation – minimal 
human error
• Suitable for high sample 
throughput laboratories
• Makes the dumas analyzer 
essential for modern food 
testing.
Instrumentation
• Dumas Nitrogen Analyzer consists of:
• Combustion furnace
• Gas purification system
• Thermal conductivity detector
• Automated sample loaders
• Modern Dumas Protein Analyzers allow continuous sample handling for high 
efficiency.
Applications in Dairy Industry
• Milk & Milk Powder – protein verification for labeling
• Cheese & Yogurt – quality control and regulatory compliance
• Infant formula – protein standardization for nutrition
• Dairy labs rely heavily on Dumas Nitrogen Analyzers for 
routine checks.
Applications in Meat Industry
• Beef, Poultry, and Fish – protein determination for trade and 
export
• Detecting adulteration (low-cost fillers vs. protein-rich meat)
• Processed meat quality checks (sausages, ham, frozen products)
• Many plants install Dumas Protein Analyzers for fast QC.
Applications in Cereal & Grain 
Products
• Wheat, Rice, Corn – grading and nutritional evaluation
• Soybeans & Pulses – high-protein product labeling
• Breakfast cereals & bakery items – compliance with food standards
• Continuous sample handling in dumas analyzers speeds up testing.
Dumas Nitrogen Analyzer Price 
Considerations
• Factors influencing price:
• Automation level (manual vs. fully automated)
• Sample capacity per run
• Detection system (single vs. multi-detector)
• Typical Dumas Nitrogen Analyzer Price: Higher than Kjeldahl, but offset by:
• Low chemical costs
• Faster throughput
• Eco-friendly operation
Advantages of Dumas Nitrogen 
Analysis
• Rapid results for high-volume food labs
• Safe, eco-friendly (no hazardous waste)
• High reproducibility and precision
• Compatible with all food matrices
Industry Case Studies
• Dairy Cooperatives – fast protein analysis in milk testing
• Meat Processing Units – rapid QC for exports
• Cereal Research Labs – wheat quality grading
• Adoption of Dumas Protein Analyzers is increasing globally.
Conclusion
• Dumas Nitrogen Analysis is a fast, safe, and reliable method 
for food protein determination.
• Dumas Nitrogen Analyzers ensure accurate results for dairy, 
meat, and cereals.
• Although Dumas Nitrogen Analyzer Price is higher, long-term 
cost savings and efficiency make it the preferred choice in 
modern food labs.