UMF, MGO, markers & bioactive chemistry
Leptosperin is a distinct and detectable fluorophore in Leptospermum honeys
Authors: Bong et al.
PLAIN-LANGUAGE SUMMARY
Purified and synthetic leptosperin reproduced Manuka honey's MM1 fluorescence signature, and adding it to artificial or clover honey generated the same spectral feature. Leptosperin was stable during prolonged storage at 37 degrees Celsius but experienced matrix quenching and was also present in several Australian Leptospermum species.
Reported result
Leptosperin is the molecular source of the MM1 signal and supports rapid fluorescence-based screening for Leptospermum honey.
Study design
fluorescence spectroscopy, compound spiking, and stability testing
UMF, MGO and quality markers
Tested material
Mānuka, kānuka and comparator honey samples or analytical standards described by the publication.
Limitations
Matrix quenching affects quantitative interpretation, and cross-species occurrence prevents the signal from being uniquely specific to New Zealand Manuka honey.
Funding & conflicts
Not yet transcribed from the primary publication.
Applicability guardrail
A positive MM1 fluorescence signal supports Leptospermum origin but is not sufficient by itself for species, geographic, regulatory, or activity-grade claims.
Scientific reference
Bong et al. (2017). Leptosperin is a distinct and detectable fluorophore in Leptospermum honeys. Food Chemistry. https://doi.org/10.1016/j.foodchem.2016.07.018
Editorial record
Responsible publisher: Manuka Drops Limited. Record updated: 2026-08-28. Retraction check recorded: 2026-08-16. Retraction status: checked-no-retraction-signal. Editorial status: verified. Read the methodology.
Continue through quality and certification
This pathway concerns authenticity, measured composition, certification, grade, freshness, storage, origin and sensory profile. It is not a medical recommendation.