The Science Behind Our Mānuka Leaf
Mānuka leaf from our trees in Whakatāne
Mānuka Chemotype Profiling
Mānuka (Leptospermum scoparium) expresses different chemo types across New Zealand, each with its own natural chemical profile. Scientific research has established that there are at least 10–12 different mānuka tree chemo types across New Zealand and within these chemo types the mānuka compounds can also vary.
At Native Tree Farm, our plantation grown mānuka has been scientifically analysed over the years. This profiling gives clarity around the natural compounds within our leaf and supports consistent formulation for product development.
Chemotype Identification
Our mānuka leaf has undergone scientific testing to understand its:
- Flavonoid profile
- Antioxidant capacity — ORAC in leaf powder
- Tannin concentration
- Volatile (essential oil) structure
- Water soluble compounds
- Free amino acids
This analysis establishes a framework for our cultivated strain rather than relying on generalised assumptions about mānuka and that they are all the same.
Compounds Identified in Our Mānuka Leaf
Flavonoids
Our mānuka leaf contains a defined flavonoid profile consistent with compounds documented within specific strains of Leptospermum scoparium. These compounds are examined in relation to anxiolytic (relaxing) and antioxidant properties.
Antimicrobial
In hot water the leaf extract exhibits strong antimicrobial inhibitory activity against pathogens such as E. coli.
Tannins
Natural occurring tannins contribute to the structural integrity and astringent character of the leaf.
Volatile Compounds
The leaf tissue contains compounds that are associated with the aromatic and antimicrobial character of mānuka. These contribute to both infusion and distillation applications — herbal tea, powder and essential oil.
Antioxidant Capacity
Our mānuka leaf powder demonstrates a high antioxidant capacity. Comparative testing has shown levels exceeding a number of commonly well known and referenced botanicals.
Why Does Chemotype Matter?
Identifying the chemo type gives a clearer understanding of the flavour, and its bioactive properties.
Flavour Expression
The flavour of our mānuka leaf reflects a variety of factors. Firstly its natural profile, its growing environment and lastly the way we harvest and process it.
Its flavour can be described as gentle, floral and lightly earthy with subtle green notes.