Simultaneous determination of toxic compounds produced during fermentation of wine.

The objective of this study was to investigate the need to use of GC×GC to quantify toxic compounds (acetaldehyde, formaldehyde, ethyl carbamate and acrolein) produced during the fermentation of Syrah wine

Evaluation of toxic compounds produced during the elaboration of Syrah wines.

The objective of this study was to verify the occurrence of four toxic compounds (acetaldehyde, formaldehyde, ethyl carbamate and acrolein) in Syrah wines through the use of comprehensive two-dimensional gas chromatography with time-of-flight mass spectrometry detection

Influence of stage of ripeness and time of maceration of Syrah grapes on levels of toxic compounds in wines.

The aim of this study was to evaluate the influence of ripeness stage and time of maceration of Syrah grapes on the levels of six toxic compounds (formaldehyde, acetaldehyde, ethyl carbamate, furan, furfural and acrolein) formed during the vinification

Characterization of risk exposure to carbonyl and furan compounds through wine consumption.

The objective of this study was to: (i) quantify acetaldehyde, formaldehyde, ethyl carbamate, furan, furfural and acrolein in wine using headspace-solid phase microextraction (HS-SPME) and comprehensive two-dimensional gas chromatography coupled to time-of-flight mass spectrometric detection (GC×GC/TOFMS) and (ii) characterize the risk of exposure to these toxic compounds through wine consumption

Influence of vineyard managements on aroma of Merlot wines.

The objective of this study is to evaluate the influence of vineyard managements on aroma of Campanha Gaúcha Merlot wines through quantitative descriptive analysis (QDA), gas chromatography ? olfactometry (GC - O) and comprehensive two - dimensional gas chromatography coupled to time-of -flight mass spectrometric detection (GC × GC/TOFMS)

Characterization of volatile and sensory profile of Cabernet Sauvignon wines produced in six different vineyards of the Campanha Gaúcha region, Brazil.

XV Congresso Latino-Americano de Viticultura e Enologia E XIII Congresso Brasileiro de Viticultura e Enologia. Bento Gonçalves-RS, 3 a 7 de Novembro de 2015

Pion-Production in Heavy-Ion Collisions at SIS energies

We investigate the production of pions in heavy-ion collisions in the energy range of $1$ - $2$ GeV/A. The dynamics of the nucleus-nucleus collisions is described by a set of coupled transport equations of the Boltzmann-Uehling-Uhlenbeck type for baryons and mesons. Besides the $N(938)$ and the $\Delta(1232)$ we also take into account nucleon resonances up to masses of $1.9 GeV/c^2$ as well as $\pi$-, $\eta$- and $\rho$-mesons. We study in detail the influence of the higher baryonic resonances and the $2\pi$-production channels ($NN\to NN \pi\pi$) on the pion spectra in comparison to $\pi^-$ data from $Ar + KCl$ collisions at $1.8$ GeV/A and $\pi^0$-data for $Au+Au$ at 1.0 GeV/A. We, furthermore, present a detailed comparison of differential pion angular distributions with the BEVALAC data for Ar + KCl at 1.8 GeV/A. The general agreement obtained indicates that the overall reactions dynamics is well described by our novel transport approach.Comment: 31 pages, 18 figures (inlcuded), to appear in Z. Phys.

Evaluating the typicality of the aroma of Syrah tropical wines from the Sub-middle São Francisco Valley employing gas chromatography coupled to olfactometry detection (GC-O).

With the aim to evaluate the peculiarities of wines produced in that region, this study focused on the characterization of the volatile profile and the determination of key odorant compounds in Syrah wine. Syrah wine was prepared at Embrapa Semiarido, Petrolina-PE from grapes obtained from a winery located in the city of Casa Nova-BA