I discontinued buying fruit juices or any liquid 'health' drinks years ago. The reason? Well, many of them simply are not healthy as they may have all sorts of stuff in them that you are unaware of.
All drinks which have natural fruits in them either have to have preservatives and other additives included or, they have to be very fresh with a very short shelf life. This is simply not practical for most products that have long supply and distribution chains.
Additionally with this market being so competitive many companies do not actively test their raw ingredients (most of which are imported) to ensure that there is no adulteration. Also, many of them put such an infinitesimal amount of the key fruit that they are promoting that the benefits are more than negated by other fillers and additives.
A classic example of this type of activity has just become public and relates to a pomegranate product which has resulted in a significant fine to the company involved for misleading the public. To read more about it click here
If you want a healthy drink it is much better to buy the fresh fruit and make it yourself, and or get the extra nutrients that you need from a quality supplement.