A large variety of fruits can be used to obtain by the appropriate technological process different kinds of semi – finished product starting from fresh fruits just harvested from field or stored in controlled atmosphere warehouses. The ripeness degree, the freshness and the cleanness of the raw materials are very important to obtain a high quality juice.
A fruit juice can be considered a suspension of water, sugars (manly: glucose – fructose – sucrose), fibers, acids, essences, vitamins, proteins, minerals, pigments and pectic-substances.
The most common semi – finished products are:
- Puree’ single strength or concentrate
- Cloudy or pulpy juices single strength or concentrate (which contain insoluble solid particles)
- Clear juice single strength or concentrate (without the insoluble substances)