Chemical Composition and Quality Assessment of Apis mellifera Honey in Australia

Abstract

Honey is a natural product highly valued for its nutritional, therapeutic, and economic significance, with its quality and composition influenced by botanical and geographical origins. Australian honey is particularly unique due to its indigenous floral sources and diverse geographic regions. In this study, 267 honey samples were collected from across Australia during the 2020–2023 production seasons. Physicochemical properties, including moisture content (regional means ranged from 15.4 to 17.8 g/100 g), pH (3.97–4.45), free acidity (13.0–26.8 meq/kg), diastase activity (17.4–39.5 DN, Schade scale) 5-hydroxymethylfurfural (HMF) (2.1–15.7 mg/kg), electrical conductivity (0.37–0.88 mS/cm), water-insoluble solids, and sugar composition, were analyzed. Significant correlations were observed between electrical conductivity and pH (r = 0.64) as well as HMF and free acidity (r = 0.50). The results demonstrate a wide diversity in the composition of Australian honey, influenced by climatic conditions, flowering periods, and postharvest practices. These findings provide valuable insights into the quality and uniqueness of Australian honey, paving the way for further research to expand the database, identify distinct characteristics, and ensure product authenticity and integrity.