Ultrafiltration method
US4523999A · kind A · utility
18Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Dec 16, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P13/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for removing impurities including humic substances, gums, polysaccharides, proteins or a mixture thereof from an amino acid fermented liquor obtained from cane, beet molasses, or a mixture thereof, said amino acid being selected from the group consisting of glutamic acid, lysine, and a mixture thereof; said method comprising: PA0 (a) adjusting the pH of the fermented liquor to a value of from 2-5 to precipitate said impurities, said impurities having an isoelectric point falling within a pH range of 2-5; PA0 (b) ultrafiltering said impurities from said fermented liquor using a semipermeable ultrafiltration membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.