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RHEOLOGICAL PROPERTIES OF SELECTED LIGHT COLORED JORDANIAN HONEY 

Authors: Shahera Zaitoun a;  Abd Al-Majeed Ghzawi b;  Kamal I. M. Al-Malah b; Basim Abu-Jdayil c
Affiliations:   a Dept. of Bio-Agricultural Technology, Al-Balqa Applied University, Al-Salt, Jordan
b Dept. of Plant Production, Jordan University of Science and Technology, Irbid, Jordan
c Dept. of Chemical Engineering, Jordan University of Science and Technology, Irbid, Jordan
DOI: 10.1081/JFP-100002192
Publication Frequency: 6 issues per year
Published in: journal International Journal of Food Properties, Volume 4, Issue 1 March 2001 , pages 139 - 148
Subject: Food Analysis;
Formats available: HTML (English) : PDF (English)
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Abstract

The rheological properties of Apple, Besromia, Citrus, and Ziziphus types of light colored Jordanian honey were examined. The types of honey used were identified via assessing the source of nectar using pollen analysis (Melissopalynology). The moisture content of honey samples was indirectly assessed via measuring the refractive index of the sample using a refractometer. A rotational, concentric cylinder viscometer was used to measure rheological properties of honey samples. The apparent viscosity was measured as a function of the shear rate. In addition, the apparent viscosity was measured, at constant shear rate at 2.2 s-1, as a function of shearing time. Newton's law of viscosity was found to adequately describe the flow behavior of honey samples. The apparent viscosity was found to decrease with temperature, and the temperature dependency of viscosity was found to follow the Arrhenius model. Moreover, the viscosity was also found to decrease with moisture content of honey. An exponential fit was used to describe the water content dependency of viscosity.
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