Results 21 to 30 of about 60,310 (255)

Differential analysis of phytochemistry and antioxidant activity in five citrus by-products based on chromatography, mass spectrometry, and spectrum-effect relationships

open access: yesFood Chemistry: X, 2023
The unripe fruit or peel of Citrus aurantium L., Citrus sinensis Osbeck, and Citrus reticulata Blanco are often disregarded due to perceptions of their marginal value.
Jiangyi Luo   +10 more
doaj   +1 more source

Lipidomics dataset of Danio rerio optic nerve regeneration model

open access: yesData in Brief, 2021
The right optic nerve of adult, 6 month to 1 year old, female and male Danio rerio were crushed and collected three days after. Matching controls of uninjured left optic nerves were also collected. The tissue was dissected from euthanized fish and frozen
Jennifer Arcuri   +2 more
doaj   +1 more source

LC-MS-based metabolite profiling of aqueous extract of Pergularia tomentosa L. and its anti-hyperglycemic effect [PDF]

open access: yesIranian Journal of Basic Medical Sciences, 2022
Objective(s): In this study, to find scientific evidence for the traditional use of Pergularia tomentosa as an anti-diabetic remedy, the effects of its aqueous extract on streptozotocin-induced diabetes mellitus in rats were evaluated.Materials and ...
Seyed Hamzeh Hosseini   +5 more
doaj   +1 more source

LC-MS/MS method for the quantitation of serum tocilizumab in rheumatoid arthritis patients using rapid tryptic digestion without IgG purification

open access: yesJournal of Pharmaceutical Analysis, 2022
The quantitation of serum tocilizumab using liquid chromatography tandem-mass spectrometry (LC-MS/MS) method has not been widely applied in clinical settings because of its time-consuming and costly sample pretreatments.
Takashi Mochizuki   +6 more
doaj   +1 more source

Use of LC-Orbitrap MS and FT-NIRS with multivariate analysis to determine geographic origin of Boston butt pork [PDF]

open access: yesInternational 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
openaire   +2 more sources

Enhanced Isotopic Ratio Outlier Analysis (IROA) Peak Detection and Identification with Ultra-High Resolution GC-Orbitrap/MS: Potential Application for Investigation of Model Organism Metabolomes

open access: yesMetabolites, 2018
Identifying non-annotated peaks may have a significant impact on the understanding of biological systems. In silico methodologies have focused on ESI LC/MS/MS for identifying non-annotated MS peaks.
Yunping Qiu   +5 more
doaj   +1 more source

Enhanced LC-ESI-MS/MS Sensitivity by Cationic Derivatization of Organophosphorus Acids

open access: yesMolecules, 2023
The chemical derivatization to enhance the signal intensity and signal-to-noise (S/N) of several organophosphorus (OP) acids in liquid chromatography tandem mass spectrometry (LC-ESI-MS/MS) is illustrated.
Tamar Shamai Yamin   +6 more
doaj   +1 more source

Characterization of Fumonisin A-Series by High-Resolution Liquid Chromatography-Orbitrap Mass Spectrometry

open access: yesToxins, 2014
Fumonisin A-series (FAs) in a reference material of corn sample that was naturally contaminated with fumonisins was characterized using high-resolution liquid chromatography-Orbitrap mass spectrometry (LC-Orbitap MS).
Masayoshi Tamura   +4 more
doaj   +1 more source

Determination of Nicotine and Cotinine in Human Blood by Dried Blood Spot-LC-Orbitrap MS Technique [PDF]

open access: yesJournal 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   +1 more source

Systematic Profiling of the Multicomponents and Authentication of Erzhi Pill by UHPLC/Q-Orbitrap-MS Oriented Rapid Polarity-Switching Data-Dependent Acquisition and Selective Monitoring of the Chemical Markers Deduced from Fingerprint Analysis

open access: yesMolecules, 2018
The analytical platform UHPLC/Q-Orbitrap-MS offers a solution to quality investigation of TCM with high definiteness. Using Erzhi Pill (EZP) as a case, we developed UHPLC/Q-Orbitrap-MS based approaches to achieve systematic multicomponent identification ...
Li Jia   +9 more
doaj   +1 more source

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