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of components that vary in assay; therefore, quality control of these components remains a challenge. In recent years, chromatography methods, such as high-performance liquid chromatography (HPLC) [ 15 – 17 ], gas chromatography–mass spectrometry (GC
), especially TCM preparations, depends on multiple constituents, but not a single compound. The present quality control method of quantifying one or two major components recorded in Chinese Pharmacopoeia can hardly ensure the clinical effectiveness. Therefore
reactions are indicating to the need for development of effective marker systems for isolation and identification of the individual components. Standardisation, stability and quality control for herbal drugs are feasible, but difficult to accomplish [ 1
serious reactions are indicating to the need for development of effective marker systems for isolation and identification of the individual components. Standardisation, stability and quality control for herbal drugs are feasible, but difficult to
values [ 7, 8 ]. Therefore, it is urgent to monitor changes in chemical compositions of trifoliate oranges occurring during the fermentation process for the quality control of fermented trifoliate oranges. In this study, high-performance liquid
irritation action, endocrine disrupting potential, and possible participation in the process of carcinogenesis [ 32 ]. Thus, the determination of these substances in pharmaceuticals and cosmetics is an important analytical task regarding quality control and
environment, and humans [ 26 ]. The aim of the study was to develop a simple, fast, inexpensive, and GAC-compliant method for the determination of metaldehyde, which could be easily adopted in routine activities of a quality control laboratory
, and reproducible for the determination of LNG, EMG, ALG, and PGN, and they were validated showing satisfactory data for all the parameters tested. The developed methods can be conveniently used by quality control laboratories. The new methods were
microbiological laboratories, especially those in the clinical area [ 25 ]. However, in the case of laboratories for microbiological quality control of pharmaceutical products, studies are limited, making it difficult to compare the results obtained from this
situation suggests that results of analysis of reference standards can vary from laboratory to laboratory [ 35 ]. Quality control of food analysis is of great importance because only precise analytical results can allow valid assumptions to be drawn
