A5028637234- Fermentation and Sensory Analysis
- Analytical Chemistry and Chromatography
- Horticultural and Viticultural Research
- Advanced Chemical Sensor Technologies
- Biochemical Analysis and Sensing Techniques
- Synthesis and Biological Evaluation
- Alcohol Consumption and Health Effects
- Tea Polyphenols and Effects
- Phytochemicals and Antioxidant Activities
- Meat and Animal Product Quality
- Nutritional Studies and Diet
- Metabolomics and Mass Spectrometry Studies
- Chemical Reactions and Isotopes
- Consumer Attitudes and Food Labeling
- Chromatography in Natural Products
- Fluorine in Organic Chemistry
Dienstleistungszentrum Ländlicher Raum
2006-2014
Centre for Addiction and Mental Health
2009
TU Dresden
2009
Chemisches und Veterinäruntersuchungsamt Karlsruhe
2009
Public Health Ontario
2009
University of Toronto
2009
Background: The research aimed to study the quality of cheap alcohol products in Poland. These included unrecorded alcohols (i.e., home‐produced or illegally imported), estimated constitute more than 25% total consumption and fruit wines. Methods: A sample ( n = 52) was collected from local markets chemical analyses were conducted. parameters studied alcoholic strength, volatiles (methanol, acetaldehyde, higher alcohols), ethyl carbamate, inorganic elements, food additives including...
Aroma changes in Chardonnay and Riesling base wines caused by the second fermentation were investigated a targeted component analysis: A stable isotope dilution approach using headspace solid phase microextraction coupled online to gas chromatography mass spectrometry (HS-SPME-GC-MS) was applied quantify 37 compounds relevant for sparkling wine aroma. In an enrichment experiment, glycosylated precursors isolated from one used double original amount these wines. Along with increased...
A method for the analysis of homologous series alkanals, (E)-2-alkenals, and (E,E)-2,4-alkadienals is described utilizing a headspace solid-phase microextraction (HS-SPME) step on-fiber derivatization with O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine (PFBHA) hydrochloride. Oxime derivatives formed on fiber are desorbed in gas chromatographic injector analyzed by comprehensive 2-D GC coupled to quadrupole MS (GC x GC-qMS). Selecting specific fragment ions within electron impact mass spectra...
Dissolved and headspace oxygen concentrations were monitored during microoxygenation (MOX) treatments before after malolactic fermentation (MLF) of Pinot noir. The implementation a noninvasive, fluorescence-based measurement system allowed precise determination in red wine the gaseous above surface. (DO) increased up to 1 0.5 mg/L second half pre-MLF post-MLF MOX experiments, respectively. Untreated control wines showed maximum DO only 0.1 at end trials. For both pre- was sufficiently...
Abstract A previously described synthetic route for preparation of 2‐methoxy‐3‐alkylprazines (MPs) based on condensation glyoxal with an α ‐amino acid amide, followed by methylation iodomethane yields 3‐alkyl‐1‐methyl‐1H‐pyrazin‐2‐ones ( N ‐methyl derivatives), rather than the designated 2‐methoxy‐3‐alkylpyrazines O derivatives). Despite similar nuclear magnetic resonance and mass spectral properties, gas chromatographic (GC) retention indices differ significantly, indicating chemical...