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.

0246810121406mo1yr18mo2yr30mo3yrDN 8 (EU standard)DN 3 (low-diastase floor)DN 7.0Months storedDiastase (DN)

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

StandardThresholdTime to failApplies to
EU standardDN ≥ 88.4 moAll honeys (default)
EU low-diastaseDN ≥ 32.9 yrClover does not qualify for exemption
US (USDA)No standardUSDA 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