GOST R 52189-2003 “Wheat flour. General specifications” is the Russian national standard covering wheat flour intended for use in bread baking, confectionery, pasta production, and other food manufacturing sectors. This standard establishes the classification, quality requirements, testing methods, and labeling rules for wheat flour.
Classification
Wheat flour is classified by type (bread flour from common wheat vs. macaroni flour from durum wheat) and by grade. The standard defines the following grades for bread wheat flour:
- Extra grade (Экстра) — the finest and whitest flour with the lowest ash content
- Top grade (Высший сорт) — fine white flour widely used in confectionery and premium bakery
- First grade (1-й сорт) — general-purpose flour for bread and bakery products
- Second grade (2-й сорт) — darker flour with higher ash and fiber content
- Wallpaper (Обойная) — whole-grain flour with the highest ash and fiber content
Key quality parameters
The standard specifies requirements for:
- Organoleptic properties: color, odor, taste, and the absence of foreign particles, crunchiness, or mustiness
- Moisture content: not more than 15.0%
- Ash content (on dry basis): varies by grade — from 0.45% (Extra) to 2.0% (Wallpaper)
- Gluten content and quality: minimum wet gluten content ranges from 20% (second grade) to 28% (top grade); gluten quality is measured by deformation on the IDK instrument
- Particle size: specified by sieve residue limits for each grade
- Metallic impurities: maximum limits per kg
- Pest infestation: not permitted
The standard references test methods defined in related GOST standards for moisture, ash, gluten, falling number, whiteness, and microbiological analysis.
This summary is provided for informational purposes. For an officially certified copy, contact your regional standards authority.