Analiza właściwości moszczów winnych i win na przykładzie winnicy z Dolnego Śląska
Analysis of properties grape musts and wines on the example of vineyard from Dolny Śląsk

Summary/Abstract: The aim of this research was to perform studies on the chemical composition of grape must and wine, total polyphenols, and resveratrol content rating. Measurements began with a probe of the grape juice (grape must), then lead throughout the period of fermentation of wine and ended with a yearly product to track changes in the chemical composition of wine and polyphenols in the wine at various stages of production. The research material consisted of wine Czarne from Winnica Świdnicka to compare the test results, were also analyzed other dry red wine on the market. It has been shown a high content of resveratrol in wine Czarne approx. 180 mg/l, compared with the test commercial wine Chateau Barrail Bordeaux 25 mg/l. It revealed the presence of other stilbene in the tested wines, but their contents wine Czarne was significantly higher, which can result from prolonged maceration and the characteristics of the wine grape variety

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