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TRIBOLOGY OF PEKMEZ (GRAPE MOLASSES)-TAHİN (SESAME PASTE) MIXTURES
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A new field of texture analysis
called “tribology” or “thin film rheology” that might explain the food texture
throughout oral processing has become important. In this study, tribological
experiments for samples containing pekmez and tahin at 30:70, 40:60 and 50:50
(w/w) were conducted by using a modified pin-on-disk tribometer. In the
Stribeck curves hydrodynamic and boundary regions were determined. For the
mixture containing pekmez:tahin at 50:50, hydrodynamic region started at a
lower speed compared to other samples, which indicated a developing a thin
lubrication film between contact surfaces. The friction decreased with the oil
content of the sample. This was more profound in the lower speed region for all
samples. Tribological data provided more distinct evaluation compared to the
viscosity data which were close to each other due to similar composition of
samples. Further research are needed on tribological properties of foods, their
relation to rheology and sensory analysis.
Title: TRIBOLOGY OF PEKMEZ (GRAPE MOLASSES)-TAHİN (SESAME PASTE) MIXTURES
Description:
A new field of texture analysis
called “tribology” or “thin film rheology” that might explain the food texture
throughout oral processing has become important.
In this study, tribological
experiments for samples containing pekmez and tahin at 30:70, 40:60 and 50:50
(w/w) were conducted by using a modified pin-on-disk tribometer.
In the
Stribeck curves hydrodynamic and boundary regions were determined.
For the
mixture containing pekmez:tahin at 50:50, hydrodynamic region started at a
lower speed compared to other samples, which indicated a developing a thin
lubrication film between contact surfaces.
The friction decreased with the oil
content of the sample.
This was more profound in the lower speed region for all
samples.
Tribological data provided more distinct evaluation compared to the
viscosity data which were close to each other due to similar composition of
samples.
Further research are needed on tribological properties of foods, their
relation to rheology and sensory analysis.
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