2021
DOI: 10.3390/ma14102472
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A Rheological Analysis of Biomaterial Behaviour as a Tool to Detect the Dilution of Heather Honey

Abstract: Heather honey is a valuable and rheologically special type of honey. Its above-average selling price may motivate its intentional violation with a mixture of honey from another botanical origin, the price of which is lower on the market. This work deals with the rheological properties of such devalued heather honey in order to determine the changes in the individual rheological parameters depending on the degree of dilution of the heather honey. For this purpose, a differently diluted heather honey sample seri… Show more

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Cited by 8 publications
(9 citation statements)
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“…Most honeys are Newtonian fluids [18][19][20][21][22][23][24][25][26] characterized by constant viscosity (η) at a fixed temperature, which can be described by Newton's law for flow (Equation (1)) showing a linear relation between shear stress (σ) and shear rate ( (1) However, some honeys, including heather honey, New Zealand manuka honey, Indian karvi honey, Nigerian honey, buckwheat, white-clover honey and several eucalyptus honeys show non-Newtonian behaviour, with viscosity values that change with shear rate at constant temperature [2,8,11,23,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. For non-Newtonian fluids, the shear stress (SS)/shear rate (SR) ratio defines the apparent viscosity (η app ) of the fluid at constant temperature, similarly to that of Newtonian fluids; however, this coefficient changes with SR while the dynamic viscosity of Newtonian fluids is SR-independent.…”
Section: Rheological Modelsmentioning
confidence: 99%
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“…Most honeys are Newtonian fluids [18][19][20][21][22][23][24][25][26] characterized by constant viscosity (η) at a fixed temperature, which can be described by Newton's law for flow (Equation (1)) showing a linear relation between shear stress (σ) and shear rate ( (1) However, some honeys, including heather honey, New Zealand manuka honey, Indian karvi honey, Nigerian honey, buckwheat, white-clover honey and several eucalyptus honeys show non-Newtonian behaviour, with viscosity values that change with shear rate at constant temperature [2,8,11,23,[27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45]. For non-Newtonian fluids, the shear stress (SS)/shear rate (SR) ratio defines the apparent viscosity (η app ) of the fluid at constant temperature, similarly to that of Newtonian fluids; however, this coefficient changes with SR while the dynamic viscosity of Newtonian fluids is SR-independent.…”
Section: Rheological Modelsmentioning
confidence: 99%
“…Steady shear and dynamic shear assays have been performed to analyse the rheological properties of honey of different botanical sources and origins, either in its liquid state or in its crystallised form [2,8,11,15,18,23,24,27,31,32,34,35,[37][38][39]43,45,50,54,64,68,74,75]. Additionally, parameters calculated from oscillatory measurements are very susceptible to physical and chemical changes, justifying their usefulness in the rheological evaluation of honey.…”
Section: Rheological Properties Of Honeymentioning
confidence: 99%
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