[zaarn]

Not to my knowledge, the acidity of the juice helps a lot to get more awake very quickly, pure sugar itself doesn't help that much to get the continous effect.

[bfuller]

..but coffee is also acidic? what am I missing here?

[zaarn]

Coffee is mostly bitter in taste, Orange juice or Ananas juice is fairly sweet and acidic in taste in comparison.

[bfuller]

So you are supposing the taste has something to do with it? because on the ph scale oj and coffee are pretty close. Sounds extremely subjective.

[zaarn]

Likely yes.

[bfuller]

I do find that a glass of oj gets me "moving" rather quickly in the morning