Roles of grape thaumatin-like protein and chitinase in white wine haze formation

Marangon, Matteo, Van Sluyter, Steven C., Neilson, Karlie A., Chan, Cherrine, Haynes, Paul A., Waters, Elizabeth J. and Falconer, Robert J. (2011) Roles of grape thaumatin-like protein and chitinase in white wine haze formation. Journal of Agricultural and Food Chemistry, 59 2: 733-740. doi:10.1021/jf1038234

Author Marangon, Matteo
Van Sluyter, Steven C.
Neilson, Karlie A.
Chan, Cherrine
Haynes, Paul A.
Waters, Elizabeth J.
Falconer, Robert J.
Title Roles of grape thaumatin-like protein and chitinase in white wine haze formation
Journal name Journal of Agricultural and Food Chemistry   Check publisher's open access policy
ISSN 0021-8561
Publication date 2011-01-26
Year available 2010
Sub-type Article (original research)
DOI 10.1021/jf1038234
Volume 59
Issue 2
Start page 733
End page 740
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2011
Language eng
Abstract Grape chitinase was found to be the primary cause of heat-induced haze formation in white wines. Chitinase was the dominant protein in a haze induced by treating Sauvignon blanc wine at 30 °C for 22 h. In artificial wines and real wines, chitinase concentration was directly correlated to the turbidity of heat-induced haze formation (50 °C for 3 h). Sulfate was confirmed to have a role in haze formation, likely by converting soluble aggregates into larger visible haze particles. Thaumatin-like protein was detected in the insoluble fraction by SDS-PAGE analysis but had no measurable impact on turbidity. Differential scanning calorimetry demonstrated that the complex mixture of molecules in wine plays a role in thermal instability of wine proteins and contributes additional complexity to the wine haze phenomenon. © 2010 American Chemical Society.
Keyword Thaumatin-like protein
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Publication Date (Web): December 28, 2010.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2011 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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Created: Fri, 11 Feb 2011, 10:27:47 EST by Dr Robert Falconer on behalf of Aust Institute for Bioengineering & Nanotechnology