http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104450853-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P13-12 |
| filingDate | 2014-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104450853-B |
| titleOfInvention | It is a kind of to recycle the method that acetyl DL methionine prepares L methionine |
| abstract | The method that acetyl DL methionine prepares L methionine is recycled the present invention relates to a kind of, be the described method comprises the following steps：Amino-acylase is dissolved in the acetyl DL methionine aqueous solution, resolution reaction is carried out, the crystallization of L methionine and the mother liquor containing acetyl D methionine is obtained；In the mother liquid obtained middle addition NaOH aqueous solution, racemization is carried out, racemization liquid is obtained；Racemization liquid is cooled and solution ph is adjusted with acetic acid, sodium acetate trihydrate crystallization and concentrate is obtained；Acetic anhydride is added in gained concentrate, acylation reaction is carried out, sodium acetate trihydrate crystallization and the mother liquor containing acetyl DL methionine is obtained, the mother liquor is used to prepare L methionine as the acetyl DL methionine aqueous solution.The method that the present invention is provided realizes recycling for acetyl DL methionine, waste liquid is reduced during L methionine is prepared and useless solid, realizes green production. |
| priorityDate | 2014-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.