What is the standard for gluten content in wheat flour?

What is the standard for gluten content in wheat flour?

‌Standards for Gluten Content in Wheat Flour‌

The gluten content in wheat flour is classified into different grades based on usage and type, as follows:

‌Gluten Content Classification Standards‌

‌High-gluten wheat flour‌: Wet gluten content ≥30%, protein content ≥12%, suitable for foods requiring strong gluten strength (e.g., bread, pizza).

‌Medium-gluten wheat flour‌: Wet gluten content 20%~30%, protein content 9%~11%, suitable for daily staples (e.g., noodles, dumplings, steamed buns).

‌Low-gluten wheat flour‌: Wet gluten content ≤24%, protein content ≤9%, ideal for soft foods (e.g., cakes, biscuits).

‌Relevant National Standards‌

‌GB/T 8607-1988‌: High-gluten wheat flour standard, requiring wet gluten content ≥30%.

‌GB/T 8608-1988‌: Low-gluten wheat flour standard, requiring wet gluten content ≤24%.

‌LS/T 3201-1993‌: Industry standard for specialty wheat flour, covering classifications for different uses.

‌Gluten Quality vs. Quantity‌

Wet gluten content reflects only quantity, while quality (e.g., elasticity, extensibility) must be measured by a ‌farinograph‌.

The ‌farinograph method‌ (international standard) evaluates indicators like peak time and stability time.

‌Varietal Differences in Wheat‌

‌Strong-gluten wheat‌: Wet gluten content ≥30% (e.g., Jimai 22 can reach 36.2%).

‌Medium-gluten wheat‌: Wet gluten content 24%~30%.

‌Weak-gluten wheat‌: Wet gluten content ≤24%.

In practice, flour selection should align with processing needs (e.g., high-gluten for bread, low-gluten for cakes) and national standards (e.g., GB/T 8607-1988).

Remark：model ST007BP=ST007B+ST008+ST009

ST007B Double-head Gluten meter, composed of main processor, ST007B Double-head Gluten meter ST008 gluten index analyzer, and ST009 dryer three independent instruments, is used to determine the wet /dry gluten content in flour, gluten quality (gluten index) and gluten water holding rate. Especially suitable for customers with a versatile of samples.