Regional, Annual and Individual Variation in the Dihydroxyaceton Content of the Nectar of Mānuka (Leptospermum scoparium) in New Zealand

Simon William; Jessica King; Maria Revell; Merilyn Manley-Harris; Megan Balks; Franziska Janusch; Michael Kiefer; Michael Clearwater; Peter R Brooks; Murray Dawson

doi:10.1021/jf5045958

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Regional, Annual and Individual Variation in the Dihydroxyaceton Content of the Nectar of Mānuka (Leptospermum scoparium) in New Zealand

Journal article

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Regional, Annual and Individual Variation in the Dihydroxyaceton Content of the Nectar of Mānuka (Leptospermum scoparium) in New Zealand

Simon William, Jessica King, Maria Revell, Merilyn Manley-Harris, Megan Balks, Franziska Janusch, Michael Kiefer, Michael Clearwater, Peter R Brooks and Murray Dawson

Journal of Agricultural and Food Chemistry, Vol.62(42), pp.10332-10340

2014

DOI: https://doi.org/10.1021/jf5045958

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Abstract

dihydroxyacetone

leptospermum scoparium

cultivar

manuka

nectar

New Zealand

honey

A method was designed and validated for analysis of dihydroxyacetone (DHA) in the floral nectar of mānuka (Leptospermum scoparium). The method was applied to samples collected from different regions of the North Island and the Nelson region of the upper South Island of New Zealand during the period 2009-2012 as well as to nectar samples from some Australian Leptospermum species. The ratio of DHA to total sugar (DHA/Tsugar) was classified as low (less than 0.001 mg mg-1), moderate (0.001-0.002 mg mg-1) and high (>0.002 mg mg-1). Inter- and intra-regional variation were observed as well as inter-annual variation with variation from low to high classification occurring within one region and from low to moderate between years. Australian species also demonstrated elevated levels of DHA in the nectar. Some garden cultivars were shown to produce very high levels of nectar DHA/Tsugar and a survey of cultivars was undertaken; cultivars with single flowered red or pink flowers were the most common producers of very high levels of nectar DHA/Tsugar.

Details

Title: Regional, Annual and Individual Variation in the Dihydroxyaceton Content of the Nectar of Mānuka (Leptospermum scoparium) in New Zealand
Authors: Simon William (Author) - University of Waikato, New Zealand
Jessica King (Author) - University of Waikato, New Zealand
Maria Revell (Author) - University of Waikato, New Zealand
Merilyn Manley-Harris (Author) - University of Waikato, New Zealand
Megan Balks (Author) - University of Waikato, New Zealand
Franziska Janusch (Author) - Reutlingen University, Germany
Michael Kiefer (Author) - Reutlingen University, Germany
Michael Clearwater (Author) - University of Waikato, New Zealand
Peter R Brooks (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Murray Dawson (Author) - Landcare Research New Zealand, New Zealand
Publication details: Journal of Agricultural and Food Chemistry, Vol.62(42), pp.10332-10340
Publisher: American Chemical Society
Date published: 2014
DOI: 10.1021/jf5045958
ISSN: 0021-8561
Copyright note: Copyright © 2014 American Chemical Society. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Journal of Agricultural and Food Chemistry, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/jf5045958
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99449094302621
Output Type: Journal article

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