Mānuka plant, bees & New Zealand origin
Utility of the Leptospermum scoparium Compound Lepteridine as a Chemical Marker for Manuka Honey Authenticity
Authors: Lin et al.
PLAIN-LANGUAGE SUMMARY
An isotopically labeled lepteridine standard was synthesized and used in an LC-MS/MS assay whose measurements correlated strongly with HPLC-UV and fluorescence results in 27 honeys. A derived threshold and fluorescence signal separated tested Manuka from non-Manuka commercial samples with performance similar to classification under the New Zealand regulatory definition.
Reported result
Lepteridine quantification, alone or alongside leptosperin, showed high potential as a rapid Manuka-honey screening method.
Study design
isotope-dilution LC-MS/MS assay and commercial-sample classification
Mānuka plant, bees and New Zealand origin
Tested material
Mānuka, kānuka and comparator honey samples or analytical standards described by the publication.
Limitations
The threshold was derived from a finite commercial sample set, and lepteridine is not itself part of the cited New Zealand regulatory definition.
Funding & conflicts
Not yet transcribed from the primary publication.
Applicability guardrail
Treat lepteridine as a screening marker requiring confirmatory multi-marker analysis rather than stand-alone proof of regulatory authenticity.
Scientific reference
Lin et al. (2020). Utility of the Leptospermum scoparium Compound Lepteridine as a Chemical Marker for Manuka Honey Authenticity. ACS Omega. https://doi.org/10.1021/acsomega.0c00486
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.