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Determination of aliphatic aldehydes C1–C5 with headspace solid phase microextraction in tap water: derivatization in-solution versus on-fiber
Short-chain aliphatic aldehydes are hazardous environmental pollutants and important biomarkers of various diseases. The development of effective...
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Highly sensitive analysis of low-molecular-mass aldehydes in beverages using a hydroxylamine reagent by high-performance liquid chromatography with fluorescence detection
In this study, a fluorescent reagent, 4-((aminooxy)methyl)-7-hydroxycoumarin (AOHC), was for the first time applied to label the low-molecular-mass...
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Selective determination of formaldehyde by high-performance liquid chromatography with porous graphitic carbon column using N,N′-bis(9-anthrylmethyl)propane-1,3-diamine as derivatizing reagent
Aromatic compounds containing two secondary amino groups were designed and prepared as new derivatizing reagents for aldehydes. One of them, N,N′ -bis(...
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Chemoenzymatic conversion of glycerol to lactic acid and glycolic acid
Catalytic valorization of raw glycerol derived from biodiesel into high-value chemicals has attracted great attention. Here, we report chemoenzymatic...
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Flavor stability assessment of lager beer: what we can learn by comparing established methods
Beer is prone to flavor changes during aging that influence consumer acceptance within shelf life. The shelf life of beer is defined as the period...
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Dimethylamine oxidation by homogenic (Fe+2 and UV) and heterogenic (CuO) activated peroxydisulfate
Oxidation of water or wastewaters with classical oxidants such as chloramine, chlorine dioxide, ozone or permanganate may lead to formation of...
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Aniline-based catalysts as promising tools to improve analysis of carbonyl compounds through derivatization techniques: preliminary results using dansylacetamidooxyamine derivatization and LC-fluorescence
Derivatization techniques based on α-effect amines and H + catalysis are commonly used for the measurement of carbonyl compounds (CCs), whether in...
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Influence of the oxidation in the aromatic composition and sensory profile of Rioja red aged wines
Rioja is one of the most important Spanish wine regions, and commonly produces wines with good aging potential. The quality of Rioja aged wines is...
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Sensitive Determination of Quinones by High-Performance Liquid Chromatography-Electrospray Ionization-Tandem Mass Spectrometry with Methanol Derivatization
Quinones are a class of compounds having substantial toxicity and pharmacological function. This work has produced a derivatization method for...
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Amino acid dependent formaldehyde metabolism in mammals
Aldehyde dehydrogenase class 3, encoded by ADH5 in humans, catalyzes the glutathione dependent detoxification of formaldehyde. Here we show that ADH5...
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Headspace gas-chromatographic determination of formaldehyde in urine
A method is proposed for determining formaldehyde by headspace gas chromatography using an o -(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA)...
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Metabolite Profiling of In Vitro Plant Systems
Gas chromatography-mass spectrometry is one of the base analytical platforms used in plant metabolite profiling. The remarkable recent methodological...
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Application of Solid-Phase Microextraction Combined with Derivatization for Polar Compound Sampling in Environmental Analysis
Solid-phase microextraction (SPME) is a solvent-free sample preparation technique using a fused-silica fiber coated with an appropriate stationary...
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Environmental and biological determination of acrolein using new cold fiber solid phase microextraction with gas chromatography mass spectrometry
Acrolein is a pollutant released daily to the indoor environment from different sources. The present study reports the development of a simple and...
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Metabolite Profiling of In Vitro Plant Systems
Gas chromatography-mass spectrometry is one of the base analytical platforms used in plant metabolite profiling. The remarkable recent methodological...
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Gas-diffusion microextraction coupled with spectrophotometry for the determination of formaldehyde in cork agglomerates
In this work, a simple methodology was developed for the extraction and determination of free formaldehyde content in cork agglomerate samples. For...
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Fish and Fishery Products: Quality Indices
This chapter discusses about the different thermal and nonthermal processing techniques for fish and fish product preservation. It also discusses in...
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Surfactant-Alumina-Coated Magnetic Nanoparticles as an Efficient Aldehydes Adsorbent Prior Their Determination by HPLC
Separation and determination of trace levels of low-molecular weight aldehydes are very important from water suppliers’ point of view. Modified...
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A GC/MS method for determination of succinylacetone in Arabidopsis thaliana
Succinylacetone was known to be a toxic metabolite of tyrosine in human and animals caused by blockage of the final step in tyrosine degradation...
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HS-SPME/GC-MS methodologies for the analysis of volatile compounds in cork material
Two methods based on headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography–ion trap mass spectrometry (GC-IT/MS) were...
