Results 31 to 40 of about 1,536,305 (296)
Analysis of total urinary catecholamines by liquid chromatography: methodology, routine experience and clinical interpretations of results [PDF]
, 1983 A simple routine method is described for simultaneous assay of total urinary adrenaline, noradrenaline and dopamine. The catecholamines are pre-purified on a small ion-exchange column, separated by reversed phase ion-pair liquid chromatography, and are ...
Schleicher, E. D. +2 more
core +1 more source
Composition and Antioxidant Activity of Essential Oils of H.B.K. grown in Colombia
Natural Product Communications, 2008 Microwave-assisted hydrodistillation, simultaneous distillation-solvent extraction, and supercritical fluid extraction, were used to isolate secondary metabolites from two Lippia origanoides chemotypes growing wild in Colombia.
Elena Stashenko +4 more
doaj +1 more source
Calibration of ultrafiltration membranes against size exclusion chromatography columns [PDF]
, 2010 Using the extension of the concept of universal calibration parameter, yielding a relation between the hydrodynamic volume of molecules and the elution volume in sizeexclusionchromatography (SEC), to retention coefficients in ultrafiltration (UF), we ...
Aimar, Pierre, Meireles, Martine
core +1 more source
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
, 2012 Jasmonic acid (JA) is an essential plant hormone involved in plant development and defense system. There are four stereoisorneric forms of JA and they act quite differently in vivo.
Wu, Hongliang +6 more
core +1 more source
Development of fast ion chromatography [PDF]
, 2005 Fast ion chromatography has been applied to short (3 cm) silica based ODS columns with a view to achieving rapid determinations of selected inorganic anions.
Connolly, Damian
core +3 more sources
Degradation mechanism of the von Willebrand factor A2 domain by nattokinase
FEBS Letters, EarlyView.Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto +3 more
wiley +1 more source
Natural Product CommunicationsIntroduction Cannabinoid receptors CB1 and CB2 are the primary endogenous receptors with which cannabinoids interact, inducing a variety of physiological and psychological effects.
Westley Cruces +6 more
doaj +1 more source
Recent Trends in Graphene-Based Sorbents for LC Analysis of Food and Environmental Water Samples
Molecules, 2023 This review provides an overview of recent advancements in applying graphene-based materials as sorbents for liquid chromatography (LC) analysis. Graphene-based materials are promising for analytical chemistry, including applications as sorbents in ...
João V. B. Borsatto +1 more
doaj +1 more source
Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis
FEBS Letters, EarlyView.Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee +7 more
wiley +1 more source