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US 2010/0143424 A1Published application
Casein nanoparticle
AssigneeFUJIFILM Corporation
InventorKatsuhiko KANAZAWA
Life of this patent
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Abstract
It is an object of the present invention to provide: a positively charged nanoparticle which can be produced without using surfactants or synthetic polymers, the size of which can be controlled, which is stable at acidic condition, and which contains an active substance therein; and a method for producing the same. The present invention provides a casein particle, wherein zeta potential is positive.
Claims13
A casein particle, wherein zeta potential is positive.
A casein particle having a mean particle diameter from 10 nm or more to less than 300 nm, which is produced by the following steps (a) and (b):
- (a) a step of mixing casein into an acidic aqueous medium from pH 0.5 or more to less than pH 7;
- and
- (b) a step of increasing the pH of the solution obtained in the step (a) above to a pH value that is ±pH 0.5 or more apart from the isoelectric point of the casein, while stirring the solution.
Dependencies are inferred from the claim text.