Abstract
Wine aroma is defined as the cumulative effect of smell, taste and mouth-feel. Free and glycosidically bound aroma compounds (GBAC) were found in wine. The glycosidic aroma precursors are non-odorous. Most advances have been made in free aroma compounds from wine in recent decades. However, the glycosidically bound aroma compounds have received much less consideration than free aroma compounds. Acids and enzymes are responsible for transferring these glycosidic aroma precursors to aromatic compounds. This review provides an overview of recent developments in isolation, hydrolysis and characterization for glycosidic aroma precursors in wines, as well as their biological applications. It looks like that the GBAC had important biological applications, such as, genetic engineering, immobilization, aroma enhancement and biosynthesis. It will help to better understand the GBAC and free aroma compounds of wines.
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