http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114736257-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47d0c46a02d59ba47699c84801c25a1f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b9620896c0dbd7af5824125f0970fa7 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H19-067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P19-385 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H1-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H1-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H19-067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P19-38 |
| filingDate | 2022-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ea058f74f13f9976d4bb10dafc25a5e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18e447d7cc6c0fe432f75da2a8d451a4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f877afacc73ca7a3f99828dacdadda2a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e2bdd90255693148d08ec9498dd61ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_038959d579af0f867aad5f576d197fc5 |
| publicationDate | 2022-07-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114736257-A |
| titleOfInvention | A kind of method for separating and extracting uridine from uridine-containing catalytic liquid |
| abstract | The invention discloses a method for separating and extracting uridine from a uridine-containing catalytic liquid, comprising the following steps: (1) mixing the uridine-containing catalytic liquid with polyethylene glycol and separating the liquids, and the lower layer is a uridine catalytic liquid (2) the obtained uridine catalytic liquid is subjected to nanofiltration to collect the nanofiltration permeate; (3) the obtained nanofiltration permeate is evaporated and concentrated to obtain a uridine concentrate; (4) the obtained uridine concentrate is adjusted to pH Then, seed crystals were added, and the mixture was stirred for crystallization. The crystallization system in the present invention is a water system, and it is unnecessary to add any reagents, thereby reducing the cost of crystallization. The crystallization process of the invention is completed within 12 hours to obtain bright white crystals, the yield of primary crystallization is more than 60%, the total crystallization yield after multiple crystallization or nested crystallization is more than 90%, and the purity of the crystal is more than 98%. , yield and cost are higher than the prior art. |
| priorityDate | 2022-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 186.