Study on Rapid Detection Technology of Illegal Chemical Compounds Added to External Poultices.

Topical poultices and applied medical devices that can relieve a variety of cervical vertebrae and lumbar vertebrae pain may have illegal additives of pharmaceutical drugs or analogues have additional health risks, but customers may not be aware of what they are using. National Medical Products Administration reviewed and approved "Supplementary test method for identification and content determination of 17 chemicals in affixed medical devices" drafted by Shandong Provincial Institute of Medical Devices and Drug Packaging Inspection in January 2022, but the test method is simple in sample processing and difficult to extract the chemical components in the paste that may cause the phenomenon of missing detection of most illegal added chemical drugs. In this work, the sample handling and extraction methods have been improved and optimized, the content of illegal added chemicals in 47 batches of affixed medical devices was determined by HPLC-MS/MS method and was detected in 37 batches, and the non-steroidal anti-inflammatory drug nimesulide and aspirin were detected in most samples.

Metabolomics analysis of Ligustri Lucidi Fructus at different harvest times during the whole growing period based on ultra-high-performance liquid chromatography with mass spectrometry.

After medicinal market research, it was found that the harvest time of Ligustri Lucidi Fructus (LLF) was chaotic in practice. In order to determine the optimal harvest period of LLF to ensure its pharmacological activity, metabolomics analysis of LLF at different harvest times based on ultra-high-performance liquid chromatography-triple quadrupole-(linear ion trap)-tandem mass spectrometry was established. In this study, 166 differential metabolites (DMs) in 448 metabolites at different harvest times were screened out based on variable importance in projection value, and among them, 94 DMs with regular trends of change in relative content (59 increased and 35 decreased with the growth period) were chosen to further research.

Simultaneous determination and quality evaluation of 16 compounds in Ligustri Lucidi Fructus covering different regions and processed products using ultra-high-performance liquid chromatography-mass spectrometry.

A quantitative analysis method and a chemical pattern recognition method were developed to evaluate raw Ligustri Lucidi Fructus (LLF) from different regions and different processed products. In this study, a comprehensive strategy using ultra-high-performance liquid chromatography-mass spectrometry quantitative analysis method was established for the simultaneous determination of 16 components in 47 batches of LLF covering 19 regions belonging to 8 provinces and 24 batches of different processed products (steamed LLF without auxiliary material, wine-steamed LLF, salt-steamed LLF, and vinegar-steamed LLF). The results of this study indicated that the proposed method was reliable and accurate for the rapid analysis proved by detection limit, quantification limit, precision, and accuracy.