Raw Honey Guide · EU diastase compliance
Will your honey pass the EU diastase test?
Select variety and storage conditions to estimate diastase (DN) decline over time — powered by Arrhenius kinetics (Sancho et al. 1992).
Using literature median DN₀ = 11 Schade units for Clover.
20 °C
12 months
Estimated DN now
7.0Schade units
Below EU standard — no exemption
DN is below 8 Schade units and this variety does not qualify for the EU low-diastase exemption. Honey fails the standard EU quality requirement.
Model equation
k(T) = 0.037 × exp(100 000/8.314 × (1/293 − 1/T)) [/month] DN(t) = DN₀ × exp(−k(T) × t) DN₀ = 11 (Clover literature median) k at 20 °C = 0.0378 /month (half-life 18.3 months)
Source: Sancho et al. (1992) Food Chem 43:277–283. Eₐ = 100 kJ/mol. Assumes pH ~3.9, moisture ~18.5 %.
EU Directive 2001/110/EC — compliance timeline for Clover at 20 °C
| Standard | Threshold | Time to fail | Applies to |
|---|---|---|---|
| EU standard | DN ≥ 8 | 8.4 mo | All honeys (default) |
| EU low-diastase | DN ≥ 3 | 2.9 yr | Clover does not qualify for exemption |
| US (USDA) | No standard | — | USDA Grade Standards silent on diastase |
Limitations: Model assumes constant temperature, pH ≈ 3.9, and moisture ≈ 18.5%. Heather honey has a thixotropic protein matrix that slows enzyme degradation — real DN decay may be slower. Stingless-bee honey (Meliponini) often starts with DN < 3 and follows different kinetics. Initial DN within a variety can vary 2–3× with floral source, harvest timing, and bee species. Use alongside a refractometer and commercial Phadebas diastase test for regulatory compliance. Full HMF + diastase guide →
rawhoneyguide.com · Honey Diastase Calculator