Results 11 to 20 of about 313,222 (315)
Use of LC-Orbitrap MS and FT-NIRS with multivariate analysis to determine geographic origin of Boston butt pork [PDF]
International Journal of Food Properties, 2022 To avoid fraudulent practices, LC-Orbitrap and FT-NIRS combined with multivariate analysis was used to distinguish between 53 Korean and foreign Boston butt samples; forty were used to establish the calibration model and 13 were used as an external validation set. Twenty metabolites were determined to be good indicators of geographic origin.
Lee Ji Hye +4 more
semanticscholar +4 more sources
Public LC-Orbitrap-MS/MS Spectral Library for Metabolite Identification [PDF]
bioRxiv, 2020 ABSTRACT Liquid chromatography-mass spectrometry(LC-MS)-based untargeted metabolomics studies require high-quality spectral libraries for reliable metabolite identification. We have constructed EMBL-MCF, an open LC-MS/MS spectral library that currently contains over 1600 fragmentation spectra from 435 authentic ...
Prasad Phapale +5 more
openaire +2 more sources
Practical Protocol for Making Calibration Curves for Direct and Sensitive Quantitative LC Orbitrap-MS of Large Neuropeptides. [PDF]
Mass Spectrom (Tokyo), 2020 Peptides larger than 3-4 kDa, such as neuropeptide Y (NPY), orexin-B, and alpha-MSH, have practical issues that arise when conducting direct and sensitive quantitative liquid chromatography (LC) orbitrap-FT mass spectrometry (MS) due to their adsorption and low ionization efficiency, especially in standard solutions. A mixing solvent consisting of 0.5%
Yamagaki T, Yamazaki T.
europepmc +4 more sources
Improved LC−MS Method for the Determination of Fatty Acids in Red Blood Cells by LC−Orbitrap MS [PDF]
Analytical Chemistry, 2011 We report a new method for fast and sensitive analyses of biologically relevant fatty acids (FAs) in red blood cells (RBC) by liquid chromatography mass spectrometry (LC-MS). A new chemical derivatization approach was developed forming picolylamides from FAs in a quantitative reaction.
Xingnan, Li, Adrian A, Franke
openaire +3 more sources
Frontiers in Chemistry, 2021 Among the phencyclidine (PCP) and synthetic cathinone analogs present on the street market, 3-methoxyphencyclidine (3-MeO-PCP) is one of the most popular dissociative hallucinogen drugs, while 3-methylmethcathinone (3-MMC) is a commonly encountered ...
Giampietro Frison +12 more
doaj +2 more sources
LC-ESI/LTQ-Orbitrap-MS Based Metabolomics in Evaluation of Bitter Taste of Arbutus unedo Honey
Molecules, 2021 Strawberry tree honey is a high-value honey from the Mediterranean area and it is characterised by a typical bitter taste. To possibly identify the secondary metabolites responsible for the bitter taste, the honey was fractionated on a C18 column and the
Paola Montoro +3 more
doaj +2 more sources
Metabolomics Benefits from Orbitrap GC–MS—Comparison of Low- and High-Resolution GC–MS
Metabolites, 2020 The development of improved mass spectrometers and supporting computational tools is expected to enable the rapid annotation of whole metabolomes. Essential for the progress is the identification of strengths and weaknesses of novel instrumentation in ...
Daniel Stettin +2 more
exaly +3 more sources
Determination of Nicotine and Cotinine in Human Blood by Dried Blood Spot-LC-Orbitrap MS Technique [PDF]
Journal of Analytical & Pharmaceutical Research, 2016 Background Dried blood spot DBS have been applied in many application as alternate analytical solution for limitations and challenges in conventional methods and validated methods demand by DBS technique are still required in nicotine Nic research area Aim The development and validation of a new bioanalytical method for simultaneous ...
Awwad, Ahmad Abu +2 more
openaire +2 more sources
Antioxidants, 2022 This study aimed to assess and correlate the phenolic content and the antioxidant activity of the methanol extracts of the stems, roots, flowers, and leaves of Echinops spinosus L. from north-eastern Algeria.
Amel Bouzabata +8 more
doaj +2 more sources
ChromatographiaAbstract Polygonati Rhizoma, as a traditional medicinal herb, possesses pharmacological effects enhancing physical strength and immunity. In this study, a systematic analysis of the monosaccharide and non-polysaccharides components in Polygonati Rhizoma was conducted using pre-column derivatization high-performance liquid chromatography (HPLC ...
Ling Liang +7 more
openaire +2 more sources