Commonly employed pretreatments in the manufacture of fermented milk are filtration, clarification, and homogenization.
Filtration is carried out by pumping milk through specially woven cloth. This results in the removal of extraneous matter. Filtration of the recombined dairy powders is also helpful in the removal of undissolved or scorched particles from the base mix. This may be further helpful in minimizing wear and tear to the homogenizer orifice and minimizing the deposition of milk solids on the heat exchanger plates.
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