Dihydroxyacetone in the Floral Nectar of Ericomyrtus serpyllifolia (Turcz.) Rye (Myrtaceae) and Verticordia chrysantha Endl. (Myrtaceae) Demonstrates That This Precursor to Bioactive Honey Is Not Restricted to the Genus Leptospermum (Myrtaceae)

Sylvester A Obeng-Darko; Jean Sloan; Rachel M Binks; Peter R Brooks; Erik J Veneklaas; Patrick M Finnegan

doi:10.1021/acs.jafc.3c00673

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Dihydroxyacetone in the Floral Nectar of Ericomyrtus serpyllifolia (Turcz.) Rye (Myrtaceae) and Verticordia chrysantha Endl. (Myrtaceae) Demonstrates That This Precursor to Bioactive Honey Is Not Restricted to the Genus Leptospermum (Myrtaceae)

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Dihydroxyacetone in the Floral Nectar of Ericomyrtus serpyllifolia (Turcz.) Rye (Myrtaceae) and Verticordia chrysantha Endl. (Myrtaceae) Demonstrates That This Precursor to Bioactive Honey Is Not Restricted to the Genus Leptospermum (Myrtaceae)

Sylvester A Obeng-Darko, Jean Sloan, Rachel M Binks, Peter R Brooks, Erik J Veneklaas and Patrick M Finnegan

Journal of Agricultural and Food Chemistry, Vol.71(20), pp.7703-7709

2023

DOI: https://doi.org/10.1021/acs.jafc.3c00673

PMID: 37191313

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Abstract

dihydroxyacetone

bioactive honey

Ericomyrtus serpyllifolia

Leptospermum

nectar

Verticordia chrysantha

Ma̅nuka honey is known for its strong bioactivity, which arises from the autocatalytic conversion of 1,3-dihydroxyacetone (dihydroxyacetone, DHA) in the floral nectar of Leptospermum scoparium (Myrtaceae) to the non-peroxide antibacterial compound methylglyoxal during honey maturation. DHA is also a minor constituent of the nectar of several other Leptospermum species. This study used high-performance liquid chromatography to test whether DHA was present in the floral nectar of five species in other genera of the family Myrtaceae: Ericomyrtus serpyllifolia (Turcz.) Rye, Chamelaucium sp. Bendering (T.J. Alford 110), Kunzea pulchella (Lindl.) A.S. George, Verticordia chrysantha Endl., and Verticordia picta Endl. DHA was found in the floral nectar of two of the five species: E. serpyllifolia and V. chrysantha. The average amount of DHA detected was 0.08 and 0.64 μg per flower, respectively. These findings suggest that the accumulation of DHA in floral nectar is a shared trait among several genera within the family Myrtaceae. Consequently, non-peroxide-based bioactive honey may be sourced from floral nectar outside the genus Leptospermum.

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Title: Dihydroxyacetone in the Floral Nectar of Ericomyrtus serpyllifolia (Turcz.) Rye (Myrtaceae) and Verticordia chrysantha Endl. (Myrtaceae) Demonstrates That This Precursor to Bioactive Honey Is Not Restricted to the Genus Leptospermum (Myrtaceae)
Authors: Sylvester A Obeng-Darko (Corresponding Author) - The University of Western Australia
Jean Sloan (Author) - CRC for Honey Bee Products
Rachel M Binks (Author) - The University of Western Australia
Peter R Brooks (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Erik J Veneklaas (Author) - The University of Western Australia
Patrick M Finnegan (Corresponding Author) - The University of Western Australia
Publication details: Journal of Agricultural and Food Chemistry, Vol.71(20), pp.7703-7709
Publisher: American Chemical Society
Date published: 2023
DOI: 10.1021/acs.jafc.3c00673
ISSN: 1520-5118
PMID: 37191313
Organisation Unit: School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99726820602621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology

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