Does Potassium Sorbate cause off flavors over time - and how long does this process take?

This article claims the following:

The second limitation of potassium sorbate is the length of time it is effective. Once added to wine it stays in the desireable form of sorbic acid only for a short time. Over time it breaks down into ethyl sorbate which can add notes of pineapple or celery to your wine. The change into ethyl sorbate is not preventable. By using potassium sorbate winemakers are putting a definite shelf life on their wines before they pick up these off flavors.

I wasn't able to find any more articles that verified that potassium sorbate causes off flavors over time, and, more importantly, how long it takes for potassium sorbate to degrade into ethyl sorbate.

Topic potassium-sorbate wine homebrew

Category Mac

1
answered at

I have never noticed it causing off flavours in any of my country wines.

Some have been in the cellar for 2-3 years.

1
answered at

I've used Potassium Sorbate in a few wine recipes and haven't noticed any issues with off taste. Commercial wineries use it too and I doubt they'd be doing it if it would change the flavor profiles of cellerable wines.

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