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US 2004/0204567 A1Published application
Method of producing electrostatically charged gelatin
AssigneeDel Monte Corporation
InventorsCharles Lin, Jay Dahlgren, Scott Morris, Richard Thompson
Life of this patent
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Abstract
Methods of forming electrostatically charged gelatin are provided. Gelatin is extracted by an acid extraction method (12) thereby producing a gelatin dispersion (14), the pH of which is adjusted to the isoelectric point of the gelatin. The pH of the gelatin dispersion (14) is then further adjusted (22) so as to cause the gelatin to assume an electrostatic charge.
Claims23
A method of forming electrostatically charged gelatin comprising the steps of:
- providing a collagen-containing raw material;
- forming an aqueous slurry with said raw material;
- forming a gelatin dispersion by extracting gelatin from said slurry at a pH of from about 2-3;
- performing a first pH adjustment whereby the pH of said gelatin dispersion is adjusted to the isoelectric point of said gelatin;
- removing non-gelatin impurities from said gelatin dispersion;
- and
- performing a second pH adjustment whereby the pH of said gelatin dispersion is adjusted causing said gelatin to assume an electrostatic charge.
4 more elements
A method of forming electrostatically charged gelatin comprising the steps of:
- providing a collagen-containing raw material;
- forming an aqueous slurry with said raw material;
- forming a gelatin dispersion by extracting gelatin from said slurry;
- performing a first pH adjustment whereby the pH of said gelatin dispersion is adjusted to the isoelectric point of said gelatin;
- performing a second pH adjustment whereby the pH of said gelatin dispersion is adjusted causing said gelatin to assume an electrostatic charge;
- and
- applying a DC electric current to said gelatin dispersion.
4 more elements
Dependencies are inferred from the claim text.