What is Monofloral Mānuka Honey? The MPI Definition
Monofloral Mānuka honey is Mānuka honey that meets the New Zealand Ministry for Primary Industries (MPI) chemical and DNA-marker thresholds for predominantly Mānuka-source honey. The MPI Mānuka Honey Definition was implemented in 2018 to set a legal floor for the "monofloral Mānuka" export label.
What does the MPI Mānuka Honey Definition test?
The MPI definition requires four chemical markers and one DNA marker:
- 3-phenyllactic acid (3-PLA): ≥400 mg/kg for monofloral, ≥20 mg/kg for multifloral
- 2'-methoxyacetophenone (2'-MAP): ≥5 mg/kg
- 2-methoxybenzoic acid (2-MBA): ≥1 mg/kg
- 4-hydroxyphenyllactic acid (4-HPLA): ≥1 mg/kg
- Mānuka pollen DNA: Cq value ≤36 (i.e. detectable Mānuka pollen DNA)
All five thresholds must be met for "monofloral Mānuka" labelling on exports. Failing one marker drops the honey to "multifloral Mānuka" or disqualifies the Mānuka label entirely.
Is monofloral Mānuka the same as UMF-certified Mānuka?
No. They are separate certifications. MPI tests floral-source authenticity. UMFHA tests antibacterial activity (MGO, leptosperin, DHA, HMF). A jar can be MPI monofloral without being UMF-certified, and vice versa. Most premium retail Mānuka satisfies both.
What is the difference between monofloral and multifloral Mānuka?
Multifloral Mānuka contains Mānuka as a significant but not dominant nectar source. The MPI multifloral thresholds are lower (3-PLA ≥20 mg/kg vs ≥400 for monofloral). Multifloral Mānuka is real Mānuka but with lower antibacterial activity and a less distinctive flavour. It commands a lower price.
Why does monofloral Mānuka cost more?
Three reasons. Production volume is lower because hives must be placed in Mānuka-dominant areas during the brief flowering window. Verification testing is required. The MGO content (the basis for UMF certification) is generally higher in monofloral than multifloral. See why Mānuka is expensive.
Does the monofloral status guarantee high MGO?
It correlates but does not guarantee. Monofloral Mānuka tends to have higher MGO than multifloral Mānuka, but actual MGO content depends on plant chemistry, maturation time, and harvest year. The monofloral label tells you about floral source; the UMF or MGO number tells you about antibacterial activity. Buy with both labels for the strongest signal.
Common questions
Can Australian Mānuka be labelled monofloral?
The MPI definition applies to New Zealand Mānuka exports. Australia has separate (and less stringent) labelling standards. Some Australian Mānuka is genuinely monofloral; the certification framework just differs.
How do I know if my Mānuka is MPI-certified?
New Zealand Mānuka exports are MPI-tested by default; the certification is implicit in the export label. Reputable brands also publish their MPI compliance on the product page.
Is "monofloral" worth the premium over "multifloral"?
For antibacterial use cases, yes. The MGO content difference is meaningful. For daily sweetening, multifloral is adequate.
For currently available verified-monofloral Mānuka, see our New Zealand Mānuka roundup.