http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105319169-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-31 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01N21-41 |
| filingDate | 2014-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105319169-B |
| titleOfInvention | A kind of recognition detection method of sugaring black tea |
| abstract | The invention discloses a kind of recognition detection methods of sugaring black tea, include the following steps：(1) accurate to weigh tealeaves sample, pure water is boiled in addition, and is extracted in boiling water bath, and constant volume is simultaneously cooled to 20~21 DEG C, obtains the prepare liquid containing tea polyphenols and sugar；(2) Brix yields are obtained in the pol for measuring the prepare liquid containing tea polyphenols and sugar with refrangibility meter；(3) absorbance A of the prepare liquid containing tea polyphenols and sugar is measured, cuvette size used is 10mm, and measure wavelength is 540nm；(4) the content X of tea polyphenols is calculated by formula：(5) result judgement：When Brix yields are more than 35%, if the ratio for calculating tea polyphenols/Brix yields in every gram of tealeaves sample of gained is more than 2.5, for normal specimens, if less than or equal to 2.5, for suspicious artificial sugaring sample.The detection method of the present invention can accurately and effectively identify the black tea of questionable person's work sugaring. |
| priorityDate | 2014-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.