Abstract:
In red wines from grapes grown in Moldova, polyphenols, which have a pronounced
antioxidant activity are represented mainly monomeric anthocyanins and their derivatives (cianidina,
delphinidin, peonidina, petunidina), flavonoids (quercetin and rutin) and stilbenes (resveratrol). Using
high performance liquid chromatography (HPLC) determines differently principal monomeric
polyphenols content, resveratrol, quercetin and routine dry red wine grapes. Separation schemes
developed can be successfully used to study phenolic compounds in wine during various
investigations.
Were studied stilbene compounds in red wine grape grown in Moldova, the different years of harvest,
from different manufacturers. It was found that the content of these compounds in wines analitzate
are: quercetin (0.4 to 107) mg/dm3, routine - (0.7 to 14.6) mg/dm3, rezveratrol - (1.2 to 9.5) mg/dm3.
Concentrations, these substances contained in red wine Moldovan allow sufficient to assume their
biological activity because, according to the statements of many scholars, namely the group of
polyphenols act as antioxidants and antimutagenic human body.