Method of producing electrostatically charged gelatin
View Patent ↗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.
1. A method of forming electrostatically charged gelatin comprising the steps of:
(a) providing a collagen-containing raw material;
(b) forming an aqueous slurry with said raw material;
(c) forming a gelatin dispersion by extracting gelatin from said slurry at a pH of from about 2-3;
(d) performing a first pH adjustment to adjust the pH of said gelatin dispersion to the isoelectric point of said gelatin;
(e) removing non-gelatin impurities from said gelatin dispersion formed in step (d); and
(f) performing a second pH adjustment to adjust the pH of said gelatin dispersion from step (e) causing said gelatin to assume an electrostatic charge.
2. The method of claim 1 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion thereby causing said gelatin to assume a negative electrostatic charge.
3. The method of claim 2 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion to between about 10-12.
4. The method of claim 1 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion thereby causing said gelatin to assume a positive electrostatic charge.
5. The method of claim 4 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion to between about 2-3.
6. The method of claim 1 , the isoelectric point of said gelatin being from about 4.5-5.5.
7. The method of claim 1 , further comprising the step of passing a DC electric current through said gelatin dispersion formed in step (f).
8. The method of claim 1 , further comprising the step of removing moisture from said gelatin dispersion formed in step (f) thereby forming a gelatin concentrate.
9. The method of claim 8 , further comprising the step of sterilizing said gelatin concentrate.
10. The method of claim 1 , further comprising the step of spray drying said gelatin dispersion formed in step (f).
11. The method of claim 1 , said impurities removal step comprising filtering said gelatin dispersion.
12. The method of claim 11 , said filtering step comprising a first filtration to remove insoluble materials from said gelatin dispersion, and a second filtration to remove non-gelatin proteins from said gelatin dispersion.
13. A method of forming electrostatically charged gelatin comprising the steps of:
(a) providing a collagen-containing raw material;
(b) forming an aqueous slurry with said raw material;
(c) forming a gelatin dispersion by extracting gelatin from said slurry;
(d) performing a first pH adjustment to adjust the pH of said gelatin dispersion to the isoelectric point of said gelatin;
(e) performing a second pH adjustment to adjust the pH of said gelatin dispersion from step (d) causing said gelatin to assume an electrostatic charge; and
(f) applying a DC electric current to said gelatin dispersion from step (e).
14. The method of claim 13 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion thereby causing said gelatin to assume a negative electrostatic charge.
15. The method of claim 14 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion to between about 10-12.
16. The method of claim 13 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion thereby causing said gelatin to assume a positive electrostatic charge.
17. The method of claim 16 , said second pH adjustment step comprising adjusting the pH of said gelatin dispersion to between about 2-3.
18. The method of claim 13 , the isoelectric point of said gelatin being from about 4.5-5.5.
19. The method of claim 13 , step (f) comprising applying a positive DC electric current to said gelatin dispersion.
20. The method of claim 13 , step (f) comprising applying a negative DC electric current to said gelatin dispersion.
21. The method of claim 13 , further comprising the step of removing moisture from said gelatin dispersion formed in step (f) thereby forming a gelatin concentrate.
22. The method of claim 21 , further comprising the step of sterilizing said gelatin concentrate.
23. The method of claim 13 , further comprising the step of spray drying said gelatin dispersion formed in step (f).