Severity: Warning
Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 1034
Function: getPubMedXML
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3152
Function: GetPubMedArticleOutput_2016
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
Objective: To establish HPLC fingerprint method for the quality evaluation and discrimination of Callicarpa nudiflora.
Methods: The chromatographic fingerprint of the 12 samples was determined by injecting 20 microL of the sample solution each time on a reversed phase Agilent TC-C18 column with the gradient elution solvent system composed of 0.30% HAc solution and acetonitrile. The flow rate was 1.0 mL/min, the column temperature was maintained at 30 degrees C and the detection wavelength was set at 254 nm.
Results: The HPLC fingerprint of Callicarpa nudiflora was set up,which included 20 common peaks, and the similarities of 12 samples were basically more than 0.90. Also,3 components were identified.
Conclusion: The method is accurate, repeatable, reliable and can fully reflect the chemical composition information, which can be used for the discrimination and the quality control of Callicarpa nudiflora.
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