P1 - Brock University

onioneyedtoiletBiotechnology

Feb 20, 2013 (4 years and 3 months ago)

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PREVENTING CORK TAIN
T

USING
GREEN METHODS IN SILICON CHEMISTRY

Ivan Bartakovic
, and Paul M. Zelisko
*

Brock University,
Department of Chemistry and Centre for Biotechnology 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
pzelisko@brocku.ca


A major concern for wine producers around the world has been contamination of wine by
trichloroanisole (TCA); a compound which is
believed to originate in cork closures and imparts a musty, mouldy taste and odour to wine

at very low levels
. In order to circumvent this
problem, we are exploring the use of silicon
-
based coatings on cork clos
ures as physical barriers against TCA.
The m
ammalian digestive
enzyme,

trypsin, has been shown to catalyze
the cross
-
linking of silicone poly
mers

and to mediate the hydrolysis, and subsequent
condensation, of silane percursors

in sol
-
gel chemistry.
The so
l
-
gels formed under tryptic conditions may
be applied
to various surfaces
and
cured to form a silica
-
based

coating
.

This p
resentation will provide an overview of our efforts in
preventing the migration of
TCA
into wine
from cork stoppers using
coatings
synthesized via

enzyme
-
mediated
sol
-
gel

chemistry
.




(
1)
Silva Pereira, C; Figueiredo Marques, JJ; San Romao, MV. Cork Taint in Wine: Scientific Knowledge and Public Perception


A Critical Review.

Critical
Reviews in Microbiology
,

2000
, 26(3), 147
-
162

(
2
)
Frampton, M.; Vawda, A.; Fletcher, J.; Zelisko, P.M. Enzyme
-
Mediated Sol

Gel Processing of Alkoxysilanes.
Chem. Commun.
,
2008
, 5544
-
5546. (
3
)
Zelisko, P.M.; Arnelien, R.; Dudding, T.; Simionescu, R.; Stanisic, H. Enzyme Mediated Cross
-
Linking of Silicone
Polymers.
Polymer Preprints
,
2007
,
48(2)
, 984
-
985.

(
4) Frampton, M, Simionescu, R.; Zelisko, P.M.
Enzyme
-
mediated Synthesis of Silsesquioxane
s
.
Silicon
,
2009
, DOI:
10.1007/s12633
-
009
-
9004
-
4
.







Type of Presentation

(please check):



Oral


Poster


Complete your abstract by replacing the text in the example above

(figures should fit in the
confines of the box)
. Please
select the
type of presentation that you would like to make
and
e
-
mail the completed form, as a Word document to
pzelisko@brocku.ca

by
May

1
8
, 20
12
.
We regret that abstracts received after this date cannot be considered.

Ab
stracts that extend
beyond the space allotted may be edited for length.