Flaxseed Hull
Product Code: FSP-HUL-001
Revision: V11.0
Description
Flaxseed hull is the outer seed coat fraction obtained through mechanical dehulling and air classification. It is the richest known botanical source of secoisolariciresinol diglucoside (SDG) lignans and soluble dietary fiber. The hull fraction is produced without chemical treatment, preserving native functionality.
Proximate Composition
| Parameter |
Specification |
Method |
| Total Dietary Fiber |
70–80% |
AOAC 991.43 |
| — Soluble Fiber |
25–35% |
AOAC 991.43 |
| — Insoluble Fiber |
40–48% |
AOAC 991.43 |
| Protein (N×6.25) |
10–15% |
AOAC 984.13 |
| Fat |
8–12% |
Soxhlet, AOAC 920.39 |
| Moisture |
≤ 6.0% |
AOAC 925.10 |
| Ash |
3–5% |
AOAC 923.03 |
Bioactive Compounds
| Compound |
Content |
Method |
| SDG Lignan |
7–10 mg/g |
HPLC-UV |
| Hydroxycinnamic acids |
0.5–1.2 mg/g |
HPLC-DAD |
| p-Coumaric acid glucoside |
0.3–0.6 mg/g |
HPLC-DAD |
| Ferulic acid glucoside |
0.2–0.5 mg/g |
HPLC-DAD |
Physical Properties
| Property |
Value |
Method |
| Bulk density |
0.35–0.45 g/mL |
Tapped density |
| Particle size (D50) |
300–600 µm |
Laser diffraction |
| Water holding capacity |
6–8 g/g |
Centrifuge method |
| Oil holding capacity |
2–3 g/g |
Centrifuge method |
| Swelling volume |
12–18 mL/g |
Graduated cylinder |
| Color (CIE L*a*b*) |
L* 45–55, a* 6–9, b* 12–18 |
Spectrophotometry |
Microbiological
| Parameter |
Limit |
Method |
| Standard Plate Count |
≤ 5,000 CFU/g |
AOAC 990.12 |
| Yeast & Mold |
≤ 100 CFU/g |
AOAC 997.02 |
| Coliforms |
≤ 10 CFU/g |
AOAC 991.14 |
| E. coli |
Negative |
AOAC 991.14 |
| Salmonella |
Negative / 25 g |
AOAC 994.04 |
Packaging
- 20 kg multi-ply paper bags with PE liner
- 500 kg bulk totes
- Custom packaging available
Storage
- Cool, dry (< 25°C, < 60% RH)
- Away from direct sunlight
- Shelf life: 12 months from production
→ FlaxseedsPro.com — Request a quotation or sample.