Results 21 to 30 of about 1,748,305 (222)

Methamphetamine Enantiomers: From Chemical Synthesis to Biological Fate. [PDF]

Chirality
Methamphetamine is an amphetamine‐type stimulant characterized by a single stereogenic center, resulting in two enantiomers, (R)‐(−)‐methamphetamine and (S)‐(+)‐methamphetamine, with distinct biological and pharmacological profiles. These forms exhibit differences in central nervous system activity, metabolism, excretion, and overall physiological ...
do Espírito Santo LP, de Carvalho RL, Sad JA, Dos Santos PHC, Domingues RS, de Azevedo Cardoso G, Enes KB, Goulart GAC, de Castro Lourenço das Neves M, de Fátima Â.   +9 more
europepmc   +2 more sources

Determination of Oxygen Heterocyclic Compounds in Foods Using Supercritical Fluid Chromatography–Tandem Mass Spectrometry

Foods, 2023
The aim of this research was to determine oxygen heterocyclic compounds in twenty-six Citrus- and cinnamon-flavoured foods using supercritical fluid chromatography in combination with triple-quadrupole mass spectrometry (SFC-QqQ-MS).
Giovanna Cafeo, Antonella Satira, Marina Russo, Monica Mondello, Paola Dugo   +4 more
doaj   +1 more source

Super/subcritical fluid chromatography with packed columns: state of the art and applications

Química Nova, 2014
Separations using supercritical fluid chromatography (SFC) with packed columns have been re-discovered and explored in recent years. SFC enables fast and efficient separations and, in some cases, gives better results than high performance liquid ...
Carla Grazieli Azevedo da Silva, Carol H. Collins   +1 more
doaj   +1 more source

Advanced Development of Supercritical Fluid Chromatography in Herbal Medicine Analysis

Molecules, 2022
The greatest challenge in the analysis of herbal components lies in their variety and complexity. Therefore, efficient analytical tools for the separation and qualitative and quantitative analysis of multi-components are essential.
Min Chen, Shan-Shan Wen, Rui Wang, Qing-Xuan Ren, Chen-Wan Guo, Ping Li, Wen Gao   +6 more
doaj   +1 more source

Supercritical fluid extraction of veterinary drug residues from meat [PDF]

, 1999
End of project ReportExtraction is a key step in the analysis of food samples for residues of veterinary drugs. Over the last ten years there has been increasing interest in alternatives to the use of organic solvents for sample extraction.
O'Keeffe, Mandy J., O'Keeffe, Michael
core   +1 more source

Supercritical fluid chromatography-mass spectrometry enables simultaneous measurement of all phosphoinositide regioisomers

Communications Chemistry, 2022
Phosphoinositide (PIP) species play important roles in a number of cellular events, but the simultaneous quantification of individual PIP species remains challenging using conventional methods.
Yuta Shimanaka, Keiko Matsumoto, Yuki Tanaka, Yuki Ishino, Shenwei Ni, Jun-Lin Guan, Hiroyuki Arai, Nozomu Kono   +7 more
doaj   +1 more source

Comparison of Cuminaldehyde Contents from Cell Suspension Cultures and Seeds of [Bunium persicum (Boiss.) B. Fedtsch.]

Notulae Scientia Biologicae, 2012
The cell suspension culture and seed samples of Bunium persicum were extracted by supercritical fluid, hydrodistillation and solvent methods and analyzed by Gas Chromatography.
Sara KHOSRAVINIA, Seyed Mahdi ZIARATNIA, Abdolreza BAGHERI, Ghadir RAJABZADEH, Seyed Hassan MARASHI   +4 more
doaj   +3 more sources

EXTRACTION OF HERBAL COMPONENTS – THE CASE FOR SUPERCRITICAL FLUID EXTRACTION [PDF]

, 2008
Malaysia is rich in heritage of sources for herbs and medicinal plants. The increasing public awareness of the health, environment and safety hazards associated with the use of organic solvents in herbals processing and the possible solvent ...
Hasan, Masitah, Kumoro, Andri Cahyo
core   +1 more source

Analytical and Preparative Separation of Softwood Lignans by Supercritical Fluid Chromatography

Separations, 2023
Lignans are widespread polyphenolic secondary plant metabolites possessing high biological activity. One of the most promising industrial-scale sources of such compounds is coniferous knotwood, containing a large number of polyphenolic compounds.
Nikolay V. Ul’yanovskii, Aleksandra A. Onuchina, Denis V. Ovchinnikov, Anna V. Faleva, Natalia S. Gorbova, Dmitry S. Kosyakov   +5 more
doaj   +1 more source

Advances of supercritical fluid chromatography in lipid profiling

Journal of Pharmaceutical Analysis, 2019
Supercritical fluid chromatography (SFC) meets with great favor due to its high efficiency, low organic solvent consumption, and the specialty for the identification of the isomeric species.
Yang Yang, Yanshan Liang, Jina Yang, Fengying Ye, Ting Zhou, Li Gongke   +5 more
doaj   +1 more source