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Flavonoids, phenolic acids and abscisic acid in Australian and New Zealand Leptospermum honeys

Yao, Lihu and Datta, Nivedita and Tomas-Berberan, Francisco A and Ferreres, Federico and Martos, Isabel and Singanusong, Riantong (2003) Flavonoids, phenolic acids and abscisic acid in Australian and New Zealand Leptospermum honeys. Food Chemistry, 81 (2). pp. 159-168. ISSN 0308-8146

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Abstract

Flavonoids, phenolic acids and abscisic acid of Australian and New Zealand Leptospermum honeys were analyzed by HPLC. Fifteen flavonoids were isolated in Australian jelly bush honey (Leptospermum polygalifolium), with an average content of 2.22 mg/100 g honey. Myricetin (3,5,7,3′,4′,5′-hexahydroxyflavone), luteolin (5,7,3′,4′-tetrahydroxyflavone) and tricetin (5,7,3′,4′,5′-pentahydroxyflavone) were the main flavonoids identified. The mean content of total phenolic acids in jelly bush honey was 5.14 mg/100 g honey, with gallic and coumaric acids as the potential phenolic acids. Abscisic acid was quantified as twice the amount (11.6 mg/100 g honey) of the phenolic acids in this honey. The flavonoid profile mainly consisted of quercetin (3,5,7,3′,4′-pentahydroxyflavone), isorhamnetin (3,5,7,4′-tetrahydroxyflavone 3′-methyl ethyl), chrysin (5,7-dihydroxyflavone), luteolin and an unknown flavanone in New Zealand manuka (Leptospermum scoparium) honey with an average content of total flavonoids of 3.06 mg/100 g honey. The content of total phenolic acids was up to 14.0 mg/100 g honey, with gallic acid as the main component. A substantial quantity (32.8 mg/100 g honey) of abscisic acid was present in manuka honey. These results showed that flavonoids and phenolic acids could be used for authenticating honey floral origins, and abscisic acid may aid in this authentication.

Item Type: Article
Uncontrolled Keywords: ResPubID18340, honey, Leptospermum, botanical origin, flavonoids, phenolic acids, floral markers, Abscisic acid
Subjects: FOR Classification > 1199 Other Medical and Health Sciences
Faculty/School/Research Centre/Department > School of Biomedical and Health Sciences
Depositing User: VUIR
Date Deposited: 03 Jun 2011 04:57
Last Modified: 20 Jul 2014 00:39
URI: http://vuir.vu.edu.au/id/eprint/2518
DOI: 10.1016/S0308-8146(02)00388-6
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Citations in Scopus: 83 - View on Scopus

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