Mar 29, 2018

Now technically, glucose in it's cyclic form has a linkage called a hemiacetal, and this linkage can break, particularly in the presence of ${H}^{+}$ ions. Lemonade doesn't have a ton of ${H}^{+}$ ions, but the reaction would occur a bit more. The reaction already occurs in solution (in an equilibrium), but might be more likely to react in acidic lemonade.