Results 11 to 20 of about 49,752 (253)

Determination of α-hydroxy acids in cosmetics by UHPLC-MS/MS

Shanghai yufang yixue
ObjectiveTo establish a UHPLC-MS/MS quantitative method for the determination of glucuronic acid， tartaric acid， glycolic acid， malic acid， lactic acid， citric acid， DL-2-hydroxybutyric acid sodium， mandelic acid， benzilic acid， hydroxycaprylic acid ...
RU Ge, XU Yong, HAN Jing, ZHANG Kai, PENG Xingsheng, ZHENG Rong   +5 more
doaj   +2 more sources

A Strategy for Identification and Structural Characterization of Compounds from Plantago asiatica L. by Liquid Chromatography-Mass Spectrometry Combined with Ion Mobility Spectrometry

Molecules, 2022
Plantago asiatica L. (PAL) as a medicinal and edible plant is rich in chemical compounds, which makes the systematic and comprehensive characterization of its components challenging.
Hongxue Gao, Zhiqiang Liu, Fengrui Song, Junpeng Xing, Zhong Zheng, Shu Liu   +5 more
doaj   +1 more source

Pharmacokinetics and Metabolism Study of Deep-Sea-Derived Butyrolactone I in Rats by UHPLC–MS/MS and UHPLC–Q-TOF-MS

Marine Drugs, 2021
Butyrolactone I (BTL-I) is a butanolide isolated from the deep-sea-derived fungus, Aspergillus sp. It provides a potential new target for the prevention and treatment of food allergies.
Liang Wu, Chun-Lan Xie, Xian-Wen Yang, Gang Chen   +3 more
doaj   +1 more source

Development of a novel UHPLC-MS/MS method for the determination of ochratoxin A in tea [PDF]

Heliyon, 2021
The mycotoxin Ochratoxin A (OTA) is responsible for producing many effects on human and animal health. In this work, the evaluation of the presence of OTA in tea beverage samples consisted of extraction and preconcentration through the solidification of a floating organic drop (DLLME-SFO) combined with an additional octadecyl silane clean-up step.
Mariel Cina, María del Valle Ponce, Luis Dante Martinez, Soledad Cerutti   +3 more
openaire   +5 more sources

Recent Developments Toward Integrated Metabolomics Technologies (UHPLC-MS-SPE-NMR and MicroED) for Higher-Throughput Confident Metabolite Identifications

Frontiers in Molecular Biosciences, 2021
Metabolomics has emerged as a powerful discipline to study complex biological systems from a small molecule perspective. The success of metabolomics hinges upon reliable annotations of spectral features obtained from MS and/or NMR. In spite of tremendous
Rajarshi Ghosh, Rajarshi Ghosh, Rajarshi Ghosh, Rajarshi Ghosh, Guanhong Bu, Guanhong Bu, Brent L. Nannenga, Brent L. Nannenga, Lloyd W. Sumner, Lloyd W. Sumner, Lloyd W. Sumner, Lloyd W. Sumner   +11 more
doaj   +1 more source

Determination of Antiviral Drugs and Their Metabolites Using Micro-Solid Phase Extraction and UHPLC-MS/MS in Reversed-Phase and Hydrophilic Interaction Chromatography Modes

Molecules, 2021
Two new ultra-high performance liquid chromatography (UHPLC) methods for analyzing 21 selected antivirals and their metabolites were optimized, including sample preparation step, LC separation conditions, and tandem mass spectrometry detection.
Luboš Fical, Maria Khalikova, Hana Kočová Vlčková, Ivona Lhotská, Zuzana Hadysová, Ivan Vokřál, Lukáš Červený, František Švec, Lucie Nováková   +8 more
doaj   +1 more source

Characterization of URB Series Synthetic Cannabinoids by HRMS and UHPLC–MS/MS

Pharmaceuticals, 2023
A large number of synthetic cannabinoids are included in new psychoactive substances (NPS) and constitute an open research area in analytical pharmaceutical and toxicology when methods are needed to unambiguously identify these substances and their ...
Marco Agostini, Donata Favretto, Caterina Renzoni, Susanna Vogliardi, Andrea Duranti   +4 more
doaj   +1 more source

Ultra-high performance liquid chromatography-MS/MS (UHPLC-MS/MS) in practice: analysis of drugs and pharmaceutical formulations

Future Journal of Pharmaceutical Sciences, 2019
Background UHPLC-MS/MS is connected in various research facilities for the qualitative and quantitative investigation of a pharmaceutical substance, pharmaceutical items, and biological specimen.
Ravsaheb H. Rathod, Suraj R. Chaudhari, Amod S. Patil, Atul A. Shirkhedkar   +3 more
doaj   +1 more source

Correlation between quality and geographical origins of Leonuri Herba revealed by the qualitative fingerprint profiling and quantitative determination of chemical components

Chinese Medicine, 2022
Background Leonuri Herba (Yimucao) is a very common Chinese herbs for treating menstrual and maternal diseases for thousands of years in China. However, the herb collected in different origins was easily found in the markets which induce the unstable ...
Kelly Yinching Lam, Yinghao Wang, Tszking Lam, Chuenfai Ku, Wingping Yeung, Zhongzhen Zhao   +5 more
doaj   +1 more source

Application of chromatographic methods for quality control of cannabinoid impurities in products containing Cannabidiol [PDF]

Pharmacia
Strict quality control of impurities in legitimate cannabidiol products and in cannabis “novel foods” is necessary due to the increased health risks from side effects associated with these impurities.
Dobrina Tsvetkova, Ivanka Pencheva, Lily Peikova   +2 more
doaj   +3 more sources