testing of natural & synthetic wine corks joseph credo samuel lin kevin oertel matt lawton...
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![Page 1: Testing of Natural & Synthetic Wine Corks Joseph Credo Samuel Lin Kevin Oertel Matt Lawton Joseph Credo Samuel Lin Kevin Oertel Matt Lawton](https://reader035.vdocument.in/reader035/viewer/2022062313/56649ce15503460f949ac72e/html5/thumbnails/1.jpg)
Testing of Natural&
Synthetic Wine Corks
Testing of Natural&
Synthetic Wine Corks
Joseph CredoSamuel LinKevin OertelMatt Lawton
Joseph CredoSamuel LinKevin OertelMatt Lawton
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History Of CorksHistory Of Corks Cork was known back in Greece and
Rome to have this great property and for having that great 'sealing property'.
In medieval times they tried to use wood in their sacks and pottery urns.
When they developed glass bottles in
the 17th century, wood did not work any more as a stopper.
Cork was rediscovered and used ever since.
Cork was known back in Greece and Rome to have this great property and for having that great 'sealing property'.
In medieval times they tried to use wood in their sacks and pottery urns.
When they developed glass bottles in
the 17th century, wood did not work any more as a stopper.
Cork was rediscovered and used ever since.
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Cork ProblemCork Problem
TCA
– is the single most prevalent wine defectassociated w/ natural cork
-it can be generated by a variety of means – most commonly by fungal metabolism of chlorophenols
TCA
– is the single most prevalent wine defectassociated w/ natural cork
-it can be generated by a variety of means – most commonly by fungal metabolism of chlorophenols
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Kinds of Wine CorksKinds of Wine Corks
SOLID COMPOSITE
NATURAL SYNTHETIC
WINE CORKS
SOLID COMPOSITE
NATURAL SYNTHETIC
WINE CORKS
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Consumer’s Preferred Characteristics for a High
Quality CorkRank (1-5; 1 – highest, 5 – lowest)
Consumer’s Preferred Characteristics for a High
Quality CorkRank (1-5; 1 – highest, 5 – lowest)
1) Extraction Characteristics2) Physical Appearance3) Wine Absorption4) Physical Dimensions5) Natural Materials
1) Extraction Characteristics2) Physical Appearance3) Wine Absorption4) Physical Dimensions5) Natural Materials
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Tests:Tests:- Measurement/Observation- Compression - Weight
- Measurement/Observation- Compression - Weight
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Tests:Tests:
-Conductivity-Conductivity
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Results: Compression TestResults: Compression TestStress vs. Strain
0
20
40
60
80
100
120
140
160
180
0 0.05 0.1 0.15 0.2 0.25 0.3Strain
Str
es
s
Natural
1+1plot
Italian
smallsynthetic
Kenwood
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Modulus of ElasticityModulus of ElasticityModulus Elasticity of the Different Corks
y = 12188x
y = 1746.6x + 0.5748
y = 1357.2x + 1.0102
y = 987.43x - 0.7006
y = 5459.3x
-10
0
10
20
30
40
50
60
70
80
0 0.005 0.01 0.015 0.02 0.025 0.03 0.035
Strain
Stre
ss
Natural
1 + 1
Italian
Kenwood
Small
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Extraction ForcesExtraction Forces
Natural = 52.5lbs
Synthetic(Italian) = 100 lbs
1+1 = 115 lbs
Natural = 52.5lbs
Synthetic(Italian) = 100 lbs
1+1 = 115 lbs
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Conductivity TestConductivity TestKenwood – too bigSynthetic (Italian) – too bigSynthetic (Small) – too bigNatural – 0.533 MohmsNatural (Compressed) –
1.74 Mohms1+1 – 2.20 Mohms1+1 (Compressed) – 2.58 Mohms
Kenwood – too bigSynthetic (Italian) – too bigSynthetic (Small) – too bigNatural – 0.533 MohmsNatural (Compressed) –
1.74 Mohms1+1 – 2.20 Mohms1+1 (Compressed) – 2.58 Mohms
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ReferenceReference
www.corkskegs.com
www.stratsplace.com/how_corks.html
www.corkqqc.com
www.corkskegs.com
www.stratsplace.com/how_corks.html
www.corkqqc.com