http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103645072-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f09f3a813bd85ebf544576abc7f54b64 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N1-42 |
| filingDate | 2013-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b62b360f2ff2dafea631531a5cb84c41 |
| publicationDate | 2014-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103645072-A |
| titleOfInvention | Flue-cured tobacco freeze-drying sample preparation method |
| abstract | A flue-cured tobacco freeze-drying sample preparation method. The invention belongs to the technical field of flue-cured tobacco fresh tobacco leaf freeze-drying sample preparation, and particularly relates to a method which performs freeze drying of flue-cured tobacco fresh tobacco leaves by a freeze dryer, and prepares dry samples for storage and test analysis. The method comprises the following steps: cutting flue-cured tobacco fresh tobacco leaves into tobacco sample fine strips with a length less than 3 mm, putting the fine strips into a freeze dryer which is precooled to below -40 DEG C, completely freezing the tobacco leaf fine strips, when the temperature reaches -40 DEG C, turning on a condenser of the freeze dryer to decrease the temperature to below -50 DEG C, turning on a vacuum pump, performing sublimation drying of the tobacco sample, when drying is complete, taking the tobacco sample out, and crushing the tobacco sample to prepare a dry sample. The method of the invention is easy to operate and master; tobacco leaves freeze-dried by the method is easy to crush; the method maintains the original color and chemical components of the tobacco leaves, and solves the problem that true values of chemical components in fresh tobacco leaves, or in tobacco leaves at a certain specific moment in the adjustment process are difficult to determine because of the rapid degradation of compounds, especially pigment and polyphenol, at high temperature during fresh tobacco leaf sample preparation. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104990779-A |
| priorityDate | 2013-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.