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American Chemical Society's Weekly PressPac -- June 3, 2009
Date:6/8/2009

ARTICLE #1 FOR IMMEDIATE RELEASE

Wine in a box? Think "good" not "gauche"
Journal of Agricultural and Food Chemistry

In a surprise discovery that may help boxed wine shake off its image as a gauche alternative to bottles, scientists in Canada are reporting that multilayer aseptic cartons (a.k.a. 'boxes') may help reduce levels of substances that contribute odors to wine and can lower its quality. Their study, the first comprehensive comparison of packaging type to wine quality, is scheduled for the June 10 issue of ACS' Journal of Agricultural and Food Chemistry, a bi-weekly publication.

Gary Pickering and colleagues note that trace amounts of chemicals called alkyl-methoxypyrazines (MPs) are generally negative to wine quality, masking the desirable fruity and floral flavors and giving wine an unpleasant green taste. With the wine industry still searching for a way of reducing MP levels, the scientists decided to look at the effects of wine packaging and closures like corks and screw caps.

They added MPs to red and white wines and monitored levels of MPs for 18 months in wine packaged in boxes and bottles with natural cork, synthetic cork, or screw caps. Boxed wine had less MPs up to 45 percent less than any other packaging. Bottles sealed with synthetic cork and screw caps performed best, with natural corks associated with the highest levels of MPs. One concern with the boxed wine, however, was evidence of greater oxidation of the wine, which itself is undesirable during wine storage.

ARTICLE #1 FOR IMMEDIATE RELEASE
"Effect of Closure and Packaging Type on 3-Alkyl-2-methoxypyrazines and Other Impact Odorants of Riesling and Cabernet Franc Wines"

DOWNLOAD FULL TEXT ARTICLE: http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/jf803720k

CONTACT:
Gary Pickering, Ph.D. <
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Contact: Michael Woods
m_woods@acs.org
202-872-6293
American Chemical Society
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