http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103204765-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_49504edcd058dbee0dd7f6f8f506c0a4 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-732 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C33-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-76 |
| filingDate | 2013-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_08f786d4ef1b432714d800dc10a7ab74 |
| publicationDate | 2014-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103204765-B |
| titleOfInvention | Method for extracting solanesol and chlorogenic acid from discard tobacco leaves |
| abstract | The invention provides a method for extracting solanesol and chlorogenic acid from discard tobacco leaves. The method comprises the following steps: (1) subjecting the discard tobacco leaves to reflux extraction with an aqueous ethanol solution with a concentration of 90 to 97% at a temperature of 35 to 40 DEG C and then filtering an extract with a ceramic membrane; (2) subjecting the extract to reduced pressure condensation at a temperature of 38 to 42 DEG C so as to obtain a dried substance; (3) dissolving the dried substance with water, carrying out filtration with the ceramic membrane, subjecting a filtrate to reduced pressure condensation so as to obtain a concentrate and standing a filter residue for subsequent usage; (4) dissolving the filter residue with ethyl acetate, carrying out filtration with the ceramic membrane, carrying out chromatographic separation by using a silica gel column, carrying out elution with absolute ethyl alcohol and subjecting an eluate to condensation and then to crystallization so as to obtain solanesol; and (5) carrying out chromatographic separation on the concentrate obtained in step (3) by using a macro-porous resin, carrying out elution with an aqueous ethanol solution with a concentration of 55 to 65%, condensing an eluate, adjusting a pH value to 3 to 3.5 and carrying out crystallization so as to obtain chlorogenic acid. The method provided by the invention has a simple process, is convenient to operate, effectively improves the utilization rate of the discard tobacco leaves, reduces production cost for chlorogenic acid and solanesol, has high yield and can effectively guarantee large scale production. |
| priorityDate | 2013-01-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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