Graines de lin entières et farine de lin : Différences de production et d'utilisation

Whole-Milled Flaxseed vs. Flaxseed Meal: Flaxseed Meal is generally a broader commercial term referring to milled flaxseed, which may come from either whole (full-fat) flaxseed or defatted flaxseed (a by-product after oil extraction).Graines de lin moulues emphasizes whole-seed milling, typically meaning flaxseed that has been ground directly from the intact seed, retaining its natural oils and nutrients.

When it comes to functional plant-based ingredients, flaxseed stands out for its rich content of Omega-3 fatty acids, dietary fiber, and plant protein. However, if you’re sourcing or formulating for large-scale food production, it’s essential to understand the difference between Whole-Milled Flaxseed et Flaxseed Meal, especially in terms of processing, nutrition, and application. We’ll break down the key differences between these two flaxseed derivatives and explore the cold milling (low-temperature crushing) process.

Whole-Milled Flaxseed vs. Flaxseed Meal

Category	Whole-Milled Flaxseed	Flaxseed Meal
Matières premières	Graines de lin entières	Full-fat or defatted flaxseed
Processus	Milled whole without oil extraction	Can be defatted after oil pressing
Teneur en huile	High (30–40%)	Low (<10% for defatted meal)
Oméga-3 (ALA)	Retained	Mostly removed in defatted meal
Texture	Coarser grind	Fine powder (80–120 mesh)
Nutrients	Rich in oil, lignans, fiber	High in protein and fiber
Use Cases	Energy bars, smoothies, premium health foods	Bakery blends, cereal fillers, protein meal
Durée de conservation	Shorter (due to oil content)	Longer (lower fat = more stable)

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What is Cold Milling (Low-Temperature Crushing)?

Cold milling, or low-temperature crushing, is a mechanical grinding method that keeps the processing temperature below 40°C (104°F). Unlike conventional high-speed milling or heat-assisted extrusion, this method protects the sensitive nutrients in flaxseed, especially:

• Alpha-Linolenic Acid (ALA) – a delicate Omega-3 fatty acid

• Lignanes – phytonutrients with antioxidant and hormone-balancing properties

• Unsaturated oils – prone to oxidation under heat

Cold Milling Process Flow

1. Raw Material Cleaning
   Remove dust, stones, and foreign materials from whole flaxseed.

2. Pre-Cooling
   Seeds are cooled to a low stable temperature (~15–20°C) before milling.

3. Cold Grinding (Under 40°C)
   Flaxseed is milled using slow-speed rollers or cryogenic equipment to prevent temperature spikes.

4. Sieving & Particle Control
   Final product is sieved to control particle size: 60–100 mesh for full-fat powder, 80–120 mesh for defatted meal.

5. Metal Detection & Packing
   Packed in food-grade 25kg bags under strict hygiene and metal-free standards.

Why Use Low-Temperature Milling?

Low-temperature milling is essential for preserving the natural functionality and bioactive compounds of flaxseed. Here’s why manufacturers prefer it:

Product Specifications Comparison

1. Whole-Milled Flaxseed (Full-Fat)

2. Flaxseed Meal (Defatted, Cold-Milled)

Which One Should You Choose?