Enzymatic modifications of grape skin phenolics A new look at wine maceration ?

Anne S. Meyer, Anis Arnous

Research output: Contribution to journalJournal articleResearchpeer-review


Phenolic compounds are decisive for the colour and sensory properties of wines. Especially in the making of red wines, the optimal retrieval of phenolics from the grape skins is crucial for obtaining wines having optimal colour, flavour, and mouth feel properties. Exogenous enzymes are widely used during the wine grape maceration to obtain high juice yield and initial extraction of flavour components, and in the case of red wines for obtaining better initial extraction of colour. Until now, this maceration has mainly been considered as an extraction step. Recent data have shown that significant changes of the phenolics may occur via enzyme catalyzed reactions already during the maceration. These recent findings provide a new base for understanding and promoting phenolic conversions during wine making, and may lead to new enzymatic maceration strategies and novel grape pomace valorisation processes in the wine industry.
Original languageEnglish
JournalAgro Food Industry Hi-Tech
Issue number1
Pages (from-to)26-29
Publication statusPublished - 2010


  • enzymatic conversion
  • Grape phenolics
  • maceration

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