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    Reducing green characters in Cabernet Sauvignon

    Access Status
    Fulltext not available
    Authors
    Wilkinson, Kerry
    Kennedy, Ursula
    Pierce, Kieran
    Gibberd, Mark
    Date
    2007
    Type
    Conference Paper
    
    Metadata
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    Citation
    Wilkinson, Kerry and Kennedy, Ursula and Pierce, Kieran and Gibberd, Mark. 2007. Reducing green characters in Cabernet Sauvignon, in R.J. Blair, P.J. Williams, I.S. Pretorius (ed), 13th Australian Wine industry Technical Conference, Jul 28 2007, pp. 193-196. Adelaide: Australian Wine Industry Technical Conference Inc.
    Source Title
    Proceedings - 13th Australian Wine Industry Technical Conference
    Source Conference
    13th Australian Wine industry Technical Conference
    ISBN
    0975105442
    Faculty
    School of Agriculture and Environment
    Faculty of Science and Engineering
    Department of Agribusiness and Wine Science
    School
    Muresk Institute
    URI
    http://hdl.handle.net/20.500.11937/4143
    Collection
    • Curtin Research Publications
    Abstract

    Viticultural and oenological approaches to reduce 3-isobutyl-2-methoxypyrazine (IBMP) concentrations in wine are discussed. Variation in vine vigour and crop yield were found to be correlated with wine IBMP concentrations. Fruit derived from high vigour vines yielded between 2- and 4-fold higher wine IBMP concentrations than fruit derived from low vigour vines. When a 50% crop thinning treatmentwas applied to low vigour vines, no effect on wine IBMP content was observed. However, the same treatment resulted in a 1.3-fold higher concentration of IBMP when applied to high vigour vines. Trials were conducted to evaluate the capacity of commercial yeast strains to reduce IBMP levels during fermentation. Wines fermented with CSM and ICV-D21 yeasts had slightly lower IBMP levels than wines fermented with E C1118. No significant differences in sensory attributes between wines were apparent.

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