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Determination of Benzo(α)pyrene in Infant Formula Using High Performance Liquid Chromatography and Dispersive Liquid–Liquid Microextraction [PDF]

Pharmaceutical Sciences, 2023
Background: Benzo(α)pyrene (BaP) is one of the most familiar polycyclic aromatic hydrocarbons (PAHs) to evaluate food safety and quality and can be present in infant formulas An analytical method for the extraction and quantification of BaP in infant ...
Akram Faridi, Mahboob Nemati
doaj   +1 more source

Determination of secoisolariciresinol diglucoside by high performance liquid chromatography

浙江大学学报. 农业与生命科学版, 2008
High performance liquid chromatography-photodiode array detection-elctrospray ionizationmass spectrometry (HPLC-PAD-ESI-MS) method was used to determine secoisolariciresinol diglucoside (SDG) qualitatively and quantitatively. Precision, stability, limits
ZHANG Wen-bin, XU Shi-ying, WANG Zhang, YANG Rui-jin, LU Rong-rong   +4 more
doaj   +1 more source

Measurement of stable isotopic enrichment and concentration of long-chain fatty acyl-carnitines in tissue by HPLC-MS

Journal of Lipid Research, 2006
We have developed a new method for the simultaneous measurements of stable isotopic tracer enrichments and concentrations of individual long-chain fatty acyl-carnitines in muscle tissue using ion-pairing high-performance liquid chromatography ...
Dayong Sun, Melanie G. Cree, Xiao-jun Zhang, Elisabet Bøersheim, Robert R. Wolfe   +4 more
doaj   +1 more source

Determination of stigmasterol hydroperoxides using high-performance liquid chromatography-mass spectrometry with atmospheric pressure chemical ionization

Czech Journal of Food Sciences, 2004
A new specific method using high-performance liquid chromatography-mass spectrometry (HPLC-MS) for the detection of stigmasterol hydroperoxides was developed.
S. Kemmo, V. Ollilainen, A.-M. Lampi, V. Piironen   +3 more
doaj   +1 more source

Core-Shell, Ultrasmall Particles, Monoliths, and Other Support Materials in High-Performance Liquid Chromatography.

Analytical Chemistry, 2016
A review of the developments that have taken place in the area of supports for high performance liquid chromatography in recent years.
N. Tanaka, D. McCalley
semanticscholar   +1 more source

Thermostable neutral metalloprotease from Geobacillus sp. EA1 does not share thermolysin's preference for substrates with leucine at the P1′ position

FEBS Letters, EarlyView.
Knowing how proteases recognise preferred substrates facilitates matching proteases to applications. The S1′ pocket of protease EA1 directs cleavage to the N‐terminal side of hydrophobic residues, particularly leucine. The S1′ pocket of thermolysin differs from EA's at only one position (leucine in place of phenylalanine), which decreases cleavage ...
Grant R. Broomfield, Torsten Kleffmann, David J. Saul, Sigurd M. Wilbanks   +3 more
wiley   +1 more source

New trends in liquid chromatography and their utilization in analysis of beer and brewery raw materials. Part 3. Comparison of HPLC and UHPLC determination of α- and β-acids.

Kvasný průmysl, 2012
The traditional method of High Performance Liquid Chromatography (HPLC) was compared with the currently increasingly used Ultra- High Performance Liquid Chromatography (UHPLC) on a representative group of 11 hop samples.
Marie JURKOVÁ, Pavel ČEJKA, Jana OLŠOVSKÁ   +2 more
doaj   +1 more source

ESI-MS fragmentation pathways of some 1,2,4-triazole-3-thiones, the intermediate compounds in the synthesis of active pharmaceutical ingredients

Журнал органічної та фармацевтичної хімії, 2020
Aim. To determine the fragmentation pathways of eight 1,2,4-triazole-3-thiones, which are intermediate products in the synthesis of active pharmaceutical ingredients of potential and registered pharmaceutical formulations. Results and discussion. HPLC-
Borys O. Varynskyi, Andriy G. Kaplaushenko   +1 more
doaj   +1 more source

C‐mannosylation promotes ADAMTS1 activation and secretion in human testicular germ cell tumor NEC8 cells

FEBS Letters, EarlyView.
C‐mannosylation is a unique form of protein glycosylation. In this study, we demonstrated that ADAMTS1 is C‐mannosylated at Trp562 and Trp565 in human testicular germ cell tumor NEC8 cells. We found that C‐mannosylation of ADAMTS1 is essential for its secretion, processing, enzymatic activity, and ability to promote vasculogenic mimicry. These findings
Takato Kobayashi, Takehiro Suzuki, Ryota Kawahara, Natsumi Harai, Naoshi Dohmae, Siro Simizu   +5 more
wiley   +1 more source

Structural dynamics of the plant hormone receptor ETR1 in a native‐like membrane environment

FEBS Letters, EarlyView.
The present study unveils the structural and signaling dynamics of ETR1, a key plant ethylene receptor. Using an optimized nanodisc system and solution NMR, we captured full‐length ETR1 in a native‐like membrane environment. Our findings reveal dynamic domain uncoupling and Cu(I)‐induced rigidification, providing the first evidence of metal‐triggered ...
Moritz Lemke, Nils Alexander Lakomek, Georg Groth   +2 more
wiley   +1 more source