Non-Newtonian behaviour of heather honey
Non-Newtonian behaviour of heather honey
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DOI：
10.1016/j.jfoodeng.2011.01.013
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发表时间：
2011-06
影响因子：
5.5
通讯作者：
M. Witczak;L. Juszczak;D. Gałkowska
中科院分区：
文献类型：
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作者：
M. Witczak;L. Juszczak;D. Gałkowska
本研究的目的是评估石南花蜂蜜的流变特性，包括粘弹性。据称，石南花蜂蜜表现出非牛顿剪切稀化行为，具有屈服应力倾向，而且它们也具有触变性。描述样品流动行为的 Herschel-Bulkley 模型的参数取决于蜂蜜的种类、含水量和测量温度。振荡流变学数据表明，在整个频率范围内，损耗模量优于存储模量。此外，复数粘度对角频率的显着依赖性证实了石南花蜂蜜的非牛顿和粘弹性行为。
The aim of this research was to evaluate the rheological properties including viscoelasticity of heather honeys. It was stated that heather honeys exhibited non-Newtonian, shear-thinning behaviour with tendency to yield stress and they were thixotropic, as well. The parameters of the Herschel–Bulkley model describing flow behaviour of samples depended on the kind of honey, its water content, and the measurement temperature. Oscillatory rheology data revealed that the loss modulus predominated over the storage one in the whole frequency range. Moreover, significant dependence of complex viscosity on angular frequency confirmed non-Newtonian and viscoelastic behaviour of heather honeys.