| Naslov: | Polyphenol profiles in white wines : a ǂcomparative analysis of vinification methods |
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| Avtorji: | ID Mihajlovska, Magdalina (Avtor)
ID Mozetič Vodopivec, Branka (Mentor) Več o mentorju...  |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Raz. nal. na višji ali visoki šoli |
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| Organizacija: | FVV - Fakulteta za vinogradništvo in vinarstvo
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| Opis: | In our graduation seminar, we studied the effects of extended maceration of grape mash on polyphenol extraction in white wine production. Data from the literature show that grape variety plays an important role in the influence of the skin contact procedure on the extraction of phenolics. The polyphenol content of Chardonnay was improved by 24-hour cryomaceration of the mash at 8.0°C and 6.0°C, whereas no such effect was observed at 4.0°C. In the case of Malvasia, the maximum amount of caftaric and caffeic acid was obtained after 21 days of post-fermentation maceration at 16.0°C. These findings underscore the potential of controlled maceration to enrich white wines with greater complexity and antioxidant capacity. However, polyphenols are very susceptible to oxidation, especially during the initial stage of grape processing, leading to the formation of brown pigments and an amber color in such wines, which may also occur during the aging process if the phenolic-rich white wine is not sufficiently protected by other antioxidants. The changes in phenolics during prolonged maceration or aging of vintage white wines are not yet well understood. Further research is needed to elucidate the chemical reactions and transformations of polyphenols during prolonged skin contact and aging in order to develop targeted approaches to produce high-quality white wines with prolonged maceration of the mash with desirable sensory and health-promoting properties. |
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| Ključne besede: | polyphenols, white wine, skin contact, winemaking procedures |
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| Kraj izida: | Nova Gorica |
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| Kraj izvedbe: | Nova Gorica |
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| Založnik: | M. Mihajlovska |
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| Leto izida: | 2024 |
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| Leto izvedbe: | 2024 |
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| Št. strani: | 11 str. |
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| PID: | 20.500.12556/RUNG-9151 |
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| COBISS.SI-ID: | 204537347 |
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| UDK: | 634.8+663.2 |
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| NUK URN: | URN:SI:UNG:REP:PJYV0ZGC |
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| Datum objave v RUNG: | 19.08.2024 |
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| Število ogledov: | 690 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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