High-density polyethylene tanks for red wine maturing with oak stavesRecently our group has published the analysis of the performance of the high-density polyethylene tanks from Flextank (Melbourne, Australia). The work has been just accepted in the Journal of the Science of Food and Agriculture where you can read the whole paper Wine evolution and spatial distribution of oxygen during storage in high-density polyethylene tanks.
Background
Porous
plastic tanks are permeable to oxygen due to the nature of the polymers
with which they are manufactured. In the wine industry, these types of
tanks are used mainly for storing wine surpluses. Lately, their use in
combination with oak pieces has also been proposed as an alternative to
mimic traditional barrel aging.
Results
In
this study, the spatial distribution of dissolved oxygen in wine-like
model solution, and the oxygen transfer rate (OTR) of high-density
polyethylene tanks (HDPE), was analysed by means of a non-invasive
opto-luminescence detector. Also, the chemical and sensory evolution of
red wine, treated with oak pieces, and stored in HDPE tanks was examined
and compared against traditional oak barrel aging. The average OTR
calculated for these tanks was within the commonly accepted amounts
reported for new barrels. With regards to wine evolution, a number of
compositional and sensory differences were observed between the wines
aged in oak barrels and those stored in HDPE tanks with oak barrel
alternatives.
Conclusion
The use of HDPE tanks in combination with oak wood alternatives is a viable alternative too for ageing wine.
