How can I store fresh fruit juice in the fridge?

Anonymous
If you like to juice your fruits or vegetables... can you help me out here?
For instance, if someone was to make homemade carrot juice but they wanna keep it fresh for several weeks or a company like V8 spalsh makes veggie drinks but it stays fresh, what do they put in it to prevent it from spoiling? Putting it in the fridge is not good enough because (a) what if I dont want to drink it right away (it will start tasting weird 8 days top lol) and (b) what if I don't have space in my fridge at the moment and I want to keep it on the counter or something? (no doubt it would not be able to stay fresh at room temperature) so again, how do I juice as much as I want and store them for as long as I want but keep them fresh?
Updates
+1 y
This is so weird. The question title I originally wrote was "If you like to juice your fruits and vegetables... can you help me out here?" I even put "putting in the fridge is not good enough" and "what if I dont have space in my fridge at the moment and want to keep it on the counter or something?" So I dont know where the title question with fridge in it came from. Is GAG changing question titles now? Hmmm *rubs chin* lol
How can I store fresh fruit juice in the fridge?
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