For the production of fruit juice, fruit and vegetable juice is concentrated from stone, pomacious and soft fruit from approx. 11 % TS to approx. 72 % TS or citrus juice is concentrated from 10 % TS to 60 - 70 % TS. Normally evaporation plants are used for this. Before or during the evaporation process, volatile aroma substances are extracted from thin juice. These aroma substances are removed and added to the fruit juice later on for intensifying the typical fruit flavor. The concentration of fruit and vegetable juice means: