A wide range of factors can influence the composition of fruits. Despite all the known, and sometimes unknown, influences, the experience shows that a large number of parameters and values are subject to statistical laws. It is thus possible to establish minimum or maximum values and/or ranges for several characteristics that are frequently found in a typical fruit juice.
The Reference Guidelines of the AIJN Code of Practice (CoP) attempt to consolidate such minimum and maximum values and/or ranges which can then be used to evaluate juices with regards to quality, authenticity and identity. The AIJN CoP for the Evaluation of Fruit and Vegetable Juices is accepted and used by the National Fruit Juice Associations within the EU, by national food inspections as well as by fruit processors and traders all around the world. It is also acknowledged by the EU Commission.