We are a specialized names in the fabrication of casein, DM
whey powder, WPC, MPC and lactose manufacturing plant. The Ultra filtration
membrane, Nanofiltration membrane, RO membrane and Ion exchange resins shall
be used for manufacturing DM whey, WPC and MPC. We also supply standard
quality membranes and resins.
Casein is an insoluble milk protein powder produced from pure pasteurized
skimmed milk by controlled acid precipitation. It shall be used as an
ingredient in the manufacture of pharmaceutical products, dietetic and other
specialized foods, cheese products, ice cream and other protein foods.
Casein is prepared by acid precipitation from unheated or short time heated
separated milk, which has a fat content of not more than 0.05%. Higher temp.
reduce solubility since whey proteins become precipitated. Whey and lactose
are removed from the curd thus obtained by heating and then washing with
warm water. The casein is dried to a moisture content of 8-12% and the final
product contains 80-90% Casein, not more than 2% fat and 2-4% ash. To
prevent discoloration through browning by the maillard reaction, the lactose
content should be reduced as much as possible.
Process Description :
Demineralized Whey Powder
Whey contained a high salt content, about 8-12%, which is calculated on Dry
matter basis. Its usefulness as an ingredient in human food is limited. Whey
is demineralized partially (30-50%) and highly (90-95%). Demineralization
involves removal of inorganic salts together with some reduction in the
content of organic ions such as lactates and citrates.
Partial demineralization of whey is done through Nanofiltration membrane
and high demineralization through Nanofiltartion membrane and Ion exchange
Partially demineralized whey concentrate can be used in Ice cream and
Bakery products and highly demineralized whey concentrate powder can be used
in formulas for Infant food.
Whey Protein Concentrate Powder and Lactose
Whey protein concentrates are powder made by drying the retentate from the
Ultra Filtration of whey. They are described in terms of their protein
content, % protein in dry matter basis, ranging from 35% to 85%. The
concentration of whey proteins is primarily achieved by UF and
The permeate of UF membrane is high in lactose content, so that is used for
manufacturing lactose powder. Permeate recovered is concentrated to minimum
62% TS level in an evaporator and then cooled under controlled conditions
for Lactose crystallization. Crystals are washed, decanted and dried to
produce pharma grade lactose.
Milk Protein Concentrate and Lactose
When skimmed milk is pumped through a series of special Ultra Filtration
Membranes under cold temperature conditions the major proteins and part of
lactose along with complete part of milk fat does not pass through the
membrane and comes out as retentate. Around 80 % of ash and only 15 % of the
available NPN in milk are also retained in this part of ash pass through the
membrane coming out as permeate. The retentate coming out is in the range of
18-22 % total solid and permeate is in the range of 18-22 % total solid and
the permeate is in the range of around 5 % total solid contents.
Retentate is thereafter further concentrated up to around 45% TS level
either by using an evaporator or up to around 30 % TS level by using an RO
system. Concentrated liquor is then spray dried to form MPC powder.
Permeate recovered is concentrated to minimum 62% TS level in an evaporator
and then cooled under controlled conditions for Lactose crystallization.
Crystals are washed, decanted and dried to produce pharma grade lactose.