Raw Honey Guide · Sucrose → Codex variety verdict
Is your honey within the Codex sucrose limit for its variety?
Pick a variety, enter your measured sucrose %. Get a Codex / EU 2001/110/EC pass-fail respecting the 5% / 10% / 15% Annex II variety exemptions and a 5-zone maturity verdict.
At 3.50 g/100g this honey is within the Codex / EU 2001/110/EC threshold of 5% for General honey (default). Reading sits inside the typical fresh range for this variety.
Within the typical fresh range for this variety. Bees capped before invertase finished, which is normal — the conversion continues slowly in the jar.
Action: No action required. Pairs with normal moisture (≤18 %) and free acidity (≤25 meq/kg).
EU Directive 2001/110/EC Annex II — variety thresholds
Method & threshold logic:
Threshold is variety-dependent per Codex STAN 12-1981 §3.3 and EU Directive 2001/110/EC Annex II. Your selected variety (General honey (default)) maps to ≤5%. Five-zone maturity bands are 0.4·L / 0.8·L / 1.0·L / 1.4·L where L is the variety threshold — making the visual interpretation constant regardless of which exemption tier applies.
Reference assays: AOAC 977.20 HPLC-RI (gold standard), AOAC 920.183 Lane–Eynon copper reduction (small-lab fallback), AOAC 991.41 NMR (full sugar profile + adulteration screen), AOAC 998.12 SCIRA stable-isotope ratio (C4 cane/corn-syrup adulteration screen).
Model assumes raw Apis mellifera honey analysed per AOAC 977.20 HPLC-RI. Does not apply to stingless-bee honey (Meliponini — different sugar profile, MSM 2683:2017 sets separate compositional ranges including elevated trehalulose). The Codex threshold is a single-axis composition ceiling, not an adulteration verdict — pair with NMR (AOAC 991.41) and SCIRA (AOAC 998.12) for adulteration screening.
Frequently asked questions ▸
Why is the Codex sucrose limit different for acacia, citrus, lavender, and a few others?
Codex STAN 12-1981 §3.3 and EU Directive 2001/110/EC Annex II both recognise that some floral sources secrete nectar with naturally elevated sucrose, and bees often cap the comb before invertase has finished hydrolysing it to glucose + fructose. A flat 5% rule would falsely fail authentic acacia (Robinia pseudoacacia), citrus, alfalfa, red gum eucalyptus, leatherwood, banksia menziesii, and French honeysuckle (sulla) — so those are exempted to ≤10%. Lavender (Lavandula spp.) and borage (Borago officinalis) get the highest exemption at ≤15%. Selecting the variety in this widget swaps the threshold automatically.
How do I measure sucrose in honey to plug a number in here?
The reference method is HPLC with refractive index detection per AOAC 977.20 / IHC 1997 — a small lab can do this for $40–80 per sample. The classical Lane–Eynon copper-reduction method (AOAC 920.183) gives an "apparent reducing sugars" value from which sucrose is calculated as (Total sugars after inversion − Reducing sugars before inversion) × 0.95. The Lane–Eynon method has wider tolerance bands but is workable for an in-house QA lab. Two warnings: (1) NMR-based methods (AOAC 991.41) report sucrose alongside the full sugar profile and are the gold standard for adulteration screening; (2) refractive sugar analyser handhelds report total dissolved solids, NOT sucrose specifically — they cannot answer this question.
My honey reads 7% sucrose. Is it premature, adulterated, or natural?
Depends on the variety. For acacia, citrus, alfalfa, eucalyptus camaldulensis, leatherwood, banksia, or French honeysuckle, 7% is within the Annex II ≤10% exemption — likely natural and Codex-compliant. For lavender or borage, 7% is well within the ≤15% exemption. For any other variety (clover, buckwheat, wildflower, manuka, heather, tupelo, etc.), 7% is above the 5% default and signals one of three causes: (a) premature harvest before capping completed — usually co-presents with elevated moisture (>18.5%) and is the most common cause; (b) sugar-syrup adulteration — a stable-isotope ratio analysis per AOAC 998.12 SCIRA distinguishes C3 (cane, beet) and C4 (corn) sugars from authentic nectar carbon; (c) very rarely, an unusually high-sucrose monofloral season for the named variety. The widget classifies your reading into a 5-zone maturity scale to make the interpretation explicit.
Why do mature honeys read so much lower than the Codex threshold?
Bee invertase (α-glucosidase, EC 3.2.1.20, secreted by hypopharyngeal glands) is highly active. During the 5–7 day ripening cycle from nectar deposition to comb capping, the enzyme converts most of the incoming sucrose to glucose and fructose. Conversion continues slowly in the capped cell and after extraction in the jar. A typical fresh, properly-capped clover or buckwheat honey reads 0.5–2.5%. A reading of 4% in clover is close to the 5% Codex ceiling and indicates either (a) shortened ripening (premature harvest) or (b) a particularly slow-converting hive — both worth flagging in a QA log.
Does this widget detect sugar-syrup adulteration?
Sucrose alone is a weak adulteration screen. Industrial inverted syrups (high-fructose corn syrup, hydrolysed cane/beet syrup) are deliberately near-zero on sucrose because the inversion step has already split it — adulteration with HFCS will not push the sucrose reading up. Adulteration with un-inverted cane or beet sucrose CAN push the sucrose reading up, but the Codex threshold catches only the obvious cases. The reliable adulteration screens are: AOAC 998.12 SCIRA (¹³C/¹²C stable-isotope ratio detects C4 cane/corn carbon mixed with C3 nectar carbon at thresholds as low as 7%), AOAC 991.41 NMR (full sugar + organic-acid profile), and SNIF-NMR (¹H site-specific natural isotope fractionation). Treat this widget as a first-pass maturity screen, not an adulteration verdict.
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