LC-DAD-ESI-MS/MS characterization of phenolic compounds in wines from Vitis vinifera Shesh i bardhe and Vlosh cultivars was written by Topi, Dritan;Kelebek, Hasim;Guclu, Gamze;Selli, Serkan. And the article was included in Journal of Food Processing and Preservation in 2022.Category: alcohols-buliding-blocks The following contents are mentioned in the article:
Phenolic compounds in white wines produced by cv. Shesh i bardhe, and red wines produced by cv. Vlosh, two native grape cultivars of Albania, was investigated by using Liquid Chromatog.-Diode Array Detection-Electrospray Ionization-Tandem Mass Spectrometry (LC-DAD-ESI-MS/MS). A total of 32 phenolic compounds including phenolic acids, flavan-3-ols, flavonols, and stilbenes were identified in both wines, with flavanols the main family contributing to total phenolics, from 45.3% to 89.9%. Gallic acid, procyanidin dimer, and trans-caftaric acid were found main compounds in both wines. Significant differences have been found depending on the region and vintage. It was observed that total phenolic content in wines from the Durresi region stands higher compared to wines originating from the Tirana region. As a result, significant variations were found among the cultivars in terms of the phenolic profiles, and Shesh i bardhe wines phenolic compounds were much higher than the Vlosh wines. This is the first study on the phenolic compounds of the white wine from Shesh i bardhe grape cv. and red wine produced by Vlosh cv. in Albania. The presence of 30 phenolic compounds was identified through LC-DAD-ESI-MS/MS, with flavanols the main family contributing to total phenolics, from 45.3% to 89.9%. Gallic acid, procyanidin dimers, as well as resveratrol were found in both wines. This study involved multiple reactions and reactants, such as (2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6Category: alcohols-buliding-blocks).
(2S,3R,4S,5S,6R)-2-(3-Hydroxy-5-((E)-4-hydroxystyryl)phenoxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 27208-80-6) belongs to alcohols. Alkyl halides are often synthesized from alcohols, in effect substituting a halogen atom for the hydroxyl group. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.Category: alcohols-buliding-blocks
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts