How Flour Mills Use NIR to Control Wheat Protein, Ash, and Moisture
How flour mills use NIR to measure wheat protein, moisture, and ash — from intake through to finished flour streams. Covers hard wheat, soft wheat, durum, and specialty milling.
Wheat Intake to Finished Flour
Where NIR Works in a Flour Mill
Protein and Ash Control
Frequently Asked Questions
- Why is protein content critical in flour milling?
- Protein content determines the bread-making potential of wheat and flour. Hard red winter wheat for bread flour needs 12–13% protein to develop strong gluten structure; soft wheat for pastry flour is targeted at 9–10%. Milling systems adjust grinding...
- What does ash measurement tell you in flour?
- Ash is the mineral content left after burning organic matter — it reflects the bran and germ contamination in flour. White flour has 0.4–0.5% ash; whole wheat is 2–3%. Ash content affects dough handling, color, and shelf life. NIR measures ash indire...
- How does NIR help with flour stream blending?
- Flour mills produce multiple streams with different protein and ash profiles — a reduction stream (lower protein, lower ash), a middlings stream (mixed), and shorts (higher protein but coarser). NIR on each stream lets the miller blend them to exact ...