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Ndjiya et al
Greener Journal of Agricultural Sciences Vol. 2 (4), pp. 152-161, August 2012
ISSN: 2276-7770
Research
Paper
Manuscript Number:07281213
A
mechanical blender
for homogenization
of the pulps
of
guava
Ndjiya Ngasop1, Haman-Djalo2, Nso Emmanuel1 and
Kayem
Joseph1
1Department
of Process
Engineering,
National Advanced
School of
Agro-Industrial
Sciences
(ENSAI),
Ngaoundéré,
Cameroon.
2Department
of Physics,
the Faculty of Science
(FS),
Ngaoundéré,
Cameroon.
Corresponding Author’s Email: ndjiyangasop @ yahoo.fr
Abstract:
Conventional juices settle
regardless of the production method used. In order to
achieve a complete homogenization, it often requires
chemical additives. In a world increasingly conscious of its
food consumption, we expect to explore a new way of
producing homogeneous juice, without additives, by using a
mechanical mixer and refine it later with one of the new
physical processes. Applied to guava pulp, the influence of
the water / guava ratio at constant volume is an important
factor through which several parameters were monitored. To
achieve this, the quantification of the mechanical power of
the mill allowed us to measure the actual energy required to
obtain a product having a particle size distribution
determined.
Thus the Reynolds number and the shear rate of the grinder
with respect to the volume, the torque of the mill and the
Reynolds number based on the rate were monitored. After
having determined the volume range corresponding to the
optimum grinding, particle size distribution at different
positions of the mill has been mastered by the influence of
dilution at constant volume.
Keywords: homogenization, guava, blender, mechanical
power, shear rate.
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