How long does a bottle of wine last after it is opened?

Re:How long does a bottle of wine last after it is opened? by danwills on Saturday January 23, 2021 @11:32PM (#25889267)

It takes a fair amount of pressure or reduced temperature (or both) to get enough CO2 dissolved for the resulting beverage to be noticeably 'sparkling' (Source: Friends force-carbonating home-brewed beer in a keg (in a fridge) w/CO2 cylinder). Don't think it would happen much from just filling the air space with CO2 at room temp and pressure.

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Re:How long does a bottle of wine last after it is opened? by amluto on Sunday January 24, 2021 @12:05AM (#25889458)

Sticking dry ice in a drink will make it taste noticeably carbonated. This is 1 atm of CO2 at the freezing point.

(Carbonating to 1 atm does not produce much fizz — it only produces any at all because the CO2 offgasses as the drink warms, but bubbles and the taste of carbonation are different phenomena.)

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Re:How long does a bottle of wine last after it is opened? by klodolph on Sunday January 24, 2021 @01:44AM (#25889892)

You’re being downvoted, but this matches my experience. A depleted can of CO2 gas produces weak carbonation, similar to dry ice.

One of the tricks to CO2 canisters is that CO2 liquefies around 6 atm at room temperature, so a canister of CO2 will maintain that pressure until the liquid CO2 is depleted. Dry ice produces about 1 atm of vapor pressure (obviously) which matches the vapor pressure you get when displacing air.

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