All-trans b-carotene molecules have been deposited at room temperature on Cu (1 1 1) and subsequently studied by STM at liquid nitrogen. They form a self-organized multilayer structure. The STM images allow to unambiguously identify single molecules and to resolve important aspects of their internal structure like its curved backbone polyene chain, its attached methyl groups and the b-ionone ri...

Gas-chromatography/mass-spectrometry and sensory descriptive analyses were applied to provide new data on volatile olfactory properties of Aglianico Primitivo (Zinfandel), Italian red wines growing interest. The relationships between sets investigated by multivariate statistical analyses: Principal Component Hierarchical Clustering Analyses (PCA, HCA). A total 35% the volatiles varied significa...

Some oxime ether derivatives of α-ionone (4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one) have been synthesized. Reaction of 4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-ketoxime with various chloro and fluoro aromatic and hetero aromatic compounds gave the corresponding oxime ether derivatives via aromatic nucleophilic substitution (SNAr). The structures of these co...

Native microorganisms present on grapes can influence final wine quality. Chambourcin is the most abundant hybrid grape grown in Pennsylvania and more resistant to cold temperatures fungal diseases compared Vitis vinifera. Here, non-Saccharomyces yeasts were isolated from spontaneously fermenting must three regional vineyards. Using cultured-based methods ITS sequencing, Hanseniaspora Pichia sp...