http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102030788-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c419d81f6e9abdd3a6f33c5ad12a5af6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H1-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H15-24 |
| filingDate | 2011-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ffbbf9bba2af98d947b61ad694ecd41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ed0ff7d920072ffda7012228e31e746 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d14efe5d5363ea4d5582eb66ae837c6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9fdd08f48692e4bae8c5b02685a7c8f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23d477d3a4943ee005b000d042b8f6b5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b93dd86d2bdf3e2760bf6bd0af51dba |
| publicationDate | 2014-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102030788-B |
| titleOfInvention | Method for preparing rebaudioside C |
| abstract | The invention relates to a method for preparing high-purity stevioside rebaudioside RC, and belongs to the technical field of food additives. In the method, stevioside is used as a raw material, rebaudioside RC content in the raw material is about between 3 and 15 percent, and recrystallization technology and column chromatography technology are combined. The method comprises the following steps of: performing recrystallization by dissolving the stevioside which serves as the raw material in methanol; stirring and crystallizing at the temperature of 4 DEG C for 24 to 48 hours; recovering a solvent from crystallization mother liquor under reduced pressure to obtain a concentrate; performing silica gel column chromatography on the concentrate under the conditions that a stationary phase is silica gel with particle size of between 200 and 300 meshes, the weight of the silica gel mixed with a sample is 2.5 times that of the concentrate and the mass of pure silica gel is 20 to 50 times that of the concentrate; performing elution by using a mixed solvent system of trichloromethane and ethanol in the ratio of 2 to 1 or dichloromethane and ethanol in the ratio of 2 to 1, wherein water content in the ethanol is 2 to 10 percent; and collecting rebaudioside RC-containing main section eluent, mixing, concentrating, drying, detecting and packaging. By the method, a rebaudioside C product with purity of more than 95 percent can be obtained; and the method has a simple process and is suitable for large-scale industrial production. |
| priorityDate | 2011-01-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.