Yao, Lihu, Bhandari, Bhesh R, Datta, Nivedita, Singanusong, Riantong and D'Arcy, Bruce (2003) Crystallisation and Moisture Sorption Properties of Selected Australian Unifloral Honeys. Journal of the Science of Food and Agriculture, 83 (9). pp. 884-888. ISSN 0022-5142

Abstract

The sorption properties of yapunyah (Eucalyptus chropholia) and yellow box (Eucalyptus melliodora) honeys (Australian unifloral honeys) were investigated in a controlled relative humidity (RH) environment at 30 ◦C for 71 days. The original water activity of the honeys affected the sorption properties. These two honeys absorbed moisture at and above 67.9% RH and desorbed moisture at and below 51.4% RH. The crystallisation behaviour of tea tree (Melaleuca quinquenervia) and yapunyah honeys was studied during storage at 13 and 23◦C. The degree of crystallisation wasmonitored by measuring the absorbance at 660 and 665nm using a spectrophotometer. The heat-treated honeys did not show any sign of crystallisation after 5months, whereas a seeding with precrystallised honey induced crystallisation of the same honeys. This crystallisation was more rapid at 13 than at 23 ◦C.

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