The object of the present invention is to provide a method for manufacturing solid milk having suitable hardness for practical use by manufacturing powdered milk having good compaction moldability. In the manufacturing method of solid milk of the present invention, powdered milk for manufacturing solid milk is produced (S100), and then solid milk is produced by produced powdered milk. This manufacturing process (S100) comprises a gas dispersal process (S112) and a spray drying process (S114). In the gas dispersal process (S112), a prescribed gas is dispersed into liquid milk which is an ingredient of the powdered milk. In the spray drying process (S114), the liquid milk having a dispersed prescribed gas is sprayed, and the sprayed liquid milk is dried. By performing these processes, powdered milk is obtained. Solid milk is manufactured by solidifying the powdered milk.

The object of the present invention is to provide a method for manufacturing solid milk having suitable hardness for practical use by manufacturing powdered milk having good compaction moldability. In the manufacturing method of solid milk of the present invention, powdered milk for manufacturing solid milk is produced (S100), and then solid milk is produced by produced powdered milk. This manufacturing process (S100) comprises a gas dispersal process (S112) and a spray drying process (S114). In the gas dispersal process (S112), a prescribed gas is dispersed into liquid milk which is an ingredient of the powdered milk. In the spray drying process (S114), the liquid milk having a dispersed prescribed gas is sprayed, and the sprayed liquid milk is dried. By performing these processes, powdered milk is obtained. Solid milk is manufactured by solidifying the powdered milk.

Methods of making a powdered milk product are described. The methods may include providing an aqueous milk-sourced mixture, and evaporating water from the aqueous milk-sourced mixture to produce an evaporated milk-sourced mixture having a total solids concentration of 35 wt. % or more. The evaporated milk-sourced mixture may be dried to form the powdered milk product, which may have less than 6 wt. % water. Systems for making the milk powdered product are also described. The systems may include an evaporator to evaporate water from a supply of a milk-sourced mixture to form an evaporated milk-sourced mixture. They may also include a dryer to dry the evaporated milk-sourced mixture and atomize it into the powdered milk product.

Methods of making a powdered milk product are described. The methods may include providing an aqueous milk-sourced mixture, and evaporating water from the aqueous milk-sourced mixture to produce an evaporated milk-sourced mixture having a total solids concentration of 35 wt. % or more. The evaporated milk-sourced mixture may be dried to form the powdered milk product, which may have less than 6 wt. % water. Systems for making the milk powdered product are also described. The systems may include an evaporator to evaporate water from a supply of a milk-sourced mixture to form an evaporated milk-sourced mixture. They may also include a dryer to dry the evaporated milk-sourced mixture and atomize it into the powdered milk product.

A method of production of a homogeneous powdered product from a starting product in a liquid state, the starting product having sugars as at least 60% of its total solids, the method comprising: in the absence of air: pressurizing the starting product to a pressure greater than 1 bar; injecting a gas into the starting product to form a mixture in which the starting product is substantially saturated by the gas; and degassing the mixture into a continuous stream of transport gas such that, on contact with the transport gas, water from the mixture evaporates to leave the homogeneous powdered product.

A solid milk may include 0.5 wt % to 4 wt % of free fat, wherein a total fat content, including the free fat, is 5 wt % or higher. The solid milk may have a porosity of 30% to 50% and a solubility of 5 seconds to 180 seconds, where the solubility is defined as a time required to dissolve the solid milk completely when the solid milk is placed in 100 mL of water at 50 C. and shaken at a rate of 1.5 cycles/sec and an amplitude of 30 cm. The solid milk may have a hardness of 30 N to 300 N, where the hardness is defined as a force causing fracture when a load is applied in a direction in which a surface area of a fracture surface of a sample becomes minimal.

A solid milk may include 0.5 wt % to 4 wt % of free fat, wherein a total fat content, including the free fat, is 5 wt % or higher. The solid milk may have a porosity of 30% to 50% and a solubility of 5 seconds to 180 seconds, where the solubility is defined as a time required to dissolve the solid milk completely when the solid milk is placed in 100 mL of water at 50 C. and shaken at a rate of 1.5 cycles/sec and an amplitude of 30 cm. The solid milk may have a hardness of 30 N to 300 N, where the hardness is defined as a force causing fracture when a load is applied in a direction in which a surface area of a fracture surface of a sample becomes minimal.

The present invention discloses a preparation method of instant bone milk, including: washing edible animal bones and then crushing, adding a certain amount composite effect enhancer, performing two high pressure hydrolysis-instantaneous pressure relief in high pressure hydrolysis chamber, collecting liquid-phase materials, performing centrifugation for degreasing, wet sieving, homogenizing, spray drying to obtain powdered instant bone milk. A device for preparation method of instant bone milk comprises a high-pressure hydrolysis tank, a grading conveying pipe and a gas-liquid separator. The instant bone milk prepared by the present invention has stable chemical structure, uniform particle size distribution and regular normal distribution, high protein solubility and good solution stability. And the preparation method has simple process, low cost equipment and good versatility.

The present invention discloses a preparation method of instant bone milk, including: washing edible animal bones and then crushing, adding a certain amount composite effect enhancer, performing two high pressure hydrolysis-instantaneous pressure relief in high pressure hydrolysis chamber, collecting liquid-phase materials, performing centrifugation for degreasing, wet sieving, homogenizing, spray drying to obtain powdered instant bone milk. A device for preparation method of instant bone milk comprises a high-pressure hydrolysis tank, a grading conveying pipe and a gas-liquid separator. The instant bone milk prepared by the present invention has stable chemical structure, uniform particle size distribution and regular normal distribution, high protein solubility and good solution stability. And the preparation method has simple process, low cost equipment and good versatility.

A dairy product comprising a sweetened dairy composition with a mass ratio of lactose to glucose equal to 1.0:2.7 to 2.6:1.5 and a mass ratio of lactose to galactose equal to 1.0:2.2 to 2.6:1.1. In a second aspect, a method comprises hydrolyzing lactose in the starting dairy composition in a lactase-catalyzed hydrolysis reaction and deactivating the reaction to provide a lactose percent conversion of 46 to 80 wt. %. In a third aspect, a dairy product comprises a fermented sweetened dairy composition comprising a lactose:glucose mass ratio of 0.01:2.4 to 1.0:1.0 and a lactose:galactose mass ratio of 0.01:2.7 to 1.0:1.0. In a fourth aspect, a method comprises hydrolyzing and fermenting lactose in a starting dairy composition, thereby providing a fermented sweetened dairy composition with a lactose percent conversion of 80 to 100 wt. %.