Chitosan-glucan complex, method for its production and end uses
US4368322A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 23, 1981 |
| Grant date | Jan 11, 1983 |
| Priority date | — |
| Expiry date | Feb 23, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12P19/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method for preparing a chitosan-glucan complex is disclosed, which comprises the steps of subjecting filamentary fungal masses from certain fungal species such as Allomyces, Aspergillus, Penicillium, Mucor, Phycomyces, Choanephora, Zygorrhynchus and like fungi, to a treatment with a concentrated aqueous solution of a strong alkali brought to its boiling point and for a time of from 4 to 6 hours. This treatment removes a number of undesirable components since a deacetylation of chitin occurs, the soluble components being concurrently removed. Foaming substances, if present, may be removed by a preliminary treatment with a solution of strong alkalies, with a lower concentration than that of the solution used for chitin deacetylation. The products thus obtained lend themselves well to the preparation of columns capable of retaining certain compounds or elements, e.g. transition metal ions and can be used for flocculation reaction, in chromatographic reactions and many other uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.