Systems and method for removing the yellow color of riboflavin from lactose solutions
AssigneeSPX Flow Technology Danmark A/S
InventorsPeter Wagner, Martin Landerslev
Life of this patent
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Abstract
The disclosure provides methods and apparatuses for removing a yellow color of riboflavin in a lactose solution. The methods include exposing a lactose solution (e.g. milk) containing riboflavin to light under conditions that breakdown riboflavin comprised within the solution to thereby remove the yellow color of riboflavin. The conditions that breakdown include a specific wavelength of light (e.g. light having a wavelength of 360-475 nm) and a specific temperature range (e.g. a temperature of 0-80° C.). In certain embodiments, the duration of the treatment is such that the lactose solution is exposed to a total of 5-20 kW of light.
Claims21
A method of removing yellow color of riboflavin in a lactose solution, the method comprising:
- passing a substantially clear lactose solution comprising riboflavin through a conduit having a light source emitting light at a wavelength of 440-475 nm;
- and
- exposing the lactose solution to 500 [J/kg] to 10000 [J/kg] of light from the light source to breakdown the riboflavin comprised within the solution to thereby remove yellow color of riboflavin as it passes through the conduit.
A method for recovering white lactose crystals from whey comprising passing a whey solution by a light source under conditions to breakdown the riboflavin comprised within the whey, wherein the passing comprises exposing the whey solution to 500 [J/kg] to 10000 [J/kg] of light, and then crystallizing the whey solution to form white crystals.
A method for removing yellow color of riboflavin comprising exposing whey permeate or whey comprising riboflavin at a temperature of 50-80° C. to 500 [J/kg] to 10000 [J/kg] of light having a wavelength of 440-457 nm.
Dependencies are inferred from the claim text.