Detection of Trace Oxygen on Wine Quality in Wine Bottle Packaging

Oxygen plays an important role in wine storage and shelf display. The trace amount of oxygen promotes the polymerization of tannins, which makes the color of the wine brighter and more stable in color, and at the same time makes the wine fuller and reduces the green taste of the new wine. In addition, it also contributes to the volatilization of aromatic substances (aromatic odors) in wine, making the fruit more intense and rich. However, excessive oxygen can cause the wine to lose its nutrition and taste and even deteriorate due to excessive oxidation. Wine bottles are mainly glass bottles. Although oxygen cannot pass through the glass material, the bottle body is not integrated with the bottle cap. Even if the bottle body and bottle cap have high barrier properties, oxygen will still pass through cork stoppers or gaskets. Into the glass, so the detection and control of the amount of oxygen penetration has fallen to the bottle sealing part of the oxygen permeability test up.
The United States ASTM F1307 standard specifies the oxygen permeability testing requirements for containers (including bottle packaging). The “PERME Bomi OX2/230 Series Oxygen Permeability Test System” produced by Labthink (Landscape) complies with this standard. Effectively solved the need for wine companies to test the oxygen permeability of wine bottles.
The package sealing structure of wines is generally in the form of crown caps, gaskets and cork stoppers. Usually people will think that this type of wine bottle packaging can completely block out the oxygen without worrying about the oxygen permeability of the product after packaging, not to worry about the loss of taste and oxidative deterioration caused by excessive oxygen. In fact, this is not the case. Experiments have shown that the amount of oxygen that can be brought about by the mouth of wine is far greater than people think. Taking the example of the finished glass bottle encapsulated in an aluminum bottle cap as an example, in a standard laboratory environment, Labthink's PERME Bomi OX2/230 oxygen transmission rate test system was used for testing, and the oxygen permeability data obtained were as follows:
Material
Test conditions: in the air
Glass bottle (aluminum bottle cap)
0.031 ml/pak.day
From the above data, it can be seen that the oxygen penetration of the glass bottle (aluminum bottle cap sealing) is not only present, but the amount of permeation is not small. If only the shelf life of 5 years is calculated, the total amount of oxygen permeation is surprisingly large. This shows that if the control is not good, excess oxygen will enter the wine bottle and affect the quality of the wine. Therefore, the amount of oxygen through the sealed portion of the bottle of wine can not be ignored, but it also has to attract the attention of manufacturers.

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