Wine is an intricate drink, and like all complex beverages, it is subject to putridity. White wine putridity can happen in various methods, however the most typical cause is oxidation.
Oxidation is a chemical response that takes place when wine is exposed to oxygen. This can occur when red wine is left open for too long, or when it is saved in a container that is not airtight. As oxygen responds with the white wine, it causes it to change color and develop off-flavors.
There are a couple of ways to prevent wine wasting. If you can't complete a bottle in one sitting, try to keep it as airtight as possible by utilizing a white wine stopper or putting it into a smaller container.
https://westpennjournal.com/?p=670 With a little care, you can enjoy your white wine without stressing about it going bad.