Enhanced membrane separation of monosaccharides utilizing concentration polarization
US5008189A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Jun 20, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/803
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Membrane separation of monosaccharides from an aqueous solution containing higher saccharides and saccharifying enzyme is considerably improved when the separation is performed under conditions where the polarization modulus for the enzyme is between 10 and 1,000, especially when the latter is between 50 and 500. A process utilizing this constraint affords a considerable savings in enzyme residence time and enzyme usage, and permits glucose of at least 94% purity to be prepared using membranes with a molecular weight cutoff as high as 70,000 with partial saccharification of thinned starch to give glucose levels in the range of 65-90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.