It's all sucked out!

I'm puzzled. Looking over the nutritional label of a bottle of lemonade - which is made with 'real lemons', claims to have 'no significant amount of vitamin C' present. Meanwhile, a bottle of apple juice (by the same brand) lists 150% of the vitamin C recommended daily intake.

Wha? Ummmm, don't lemons have vitamin C? What did they do? Suck all the vitamin C out of the lemonade before bottling it and put it all in the apple juice?