Nope. Nicely written, but dosn't stand scrutiny. Minarls? Which would be much,much more concentrated in a piece of apple? Where would that come from? And so on. Doesn't make sense,
The thing about palatability is a thing though, vingar was used in ancent times (one of the most misunderstood parts of the bible, the soldier that gave vingar to jesus actually did a nice thing).
But I prefer to relay on instincts. Giving kids soda pops to get them drink enough is counterproductive. Actually, it's awful.
Plain water is what you drink when you are thirsty. Masking that urge with whatever flavour imho is counterproductive.