December 12, 2018

Fruit Juice

Fruit juice is available in a wide variation ranging from citrus to tropical fruits. Since these products provide good nutritional value, they are preferred by a large majority of the population. In many instances, fruit juice is incorporated as a part of the daily breakfast routine as they provide daily quota of minerals and vitamins in one serving. With increased number of consumers globally following the trend of healthier lifestyles the demand for fruit juice has increased tremendously causing manufacturers to develop new variants and sometimes not follow legal production practices.

Problems in the fruit juice industry can be serious when it comes to raw materials for the production of fruit juices. 

Illegal practices include use of sugar syrup or dry sugar to concentrate fruit juice and thus increase the percentage of dry matter.  In actuality the problem is much more significant, as cheaters are trying to accelerate the evaporation process with the addition of sugar when concentrating fruit juice, which is associated with lower energy consumption and a shortening the concentration process.  Such concentrate is then difficult to detect as illegal practice, whether it has added sugars or if its origin is only from fruit. 

Another way, which is much more present, is that the fruit is sipping into sugar syrups.  This is called “the new osmotic drying technology”, and in fact, the osmosis is carried out, and then the fruit, based on the difference in osmotic pressure releases juice into that sugar syrup.  At the end of the process,  “candied fruit” which is referred to as “osmotically dried fruit” is produced and also a “concentrated fruit juice” which is actually a sugar syrup with flavorings and fruit colors.

Following pictures show the osmotically dried blueberries and oranges.

Another problem is related to the production of freshly squeezed natural fruit juice without the addition of sugar or water in relation to reconstituted fruit juices obtained from fruit concentrates by water dilution. This problem is especially present in the production of fruit juices produced from citrus fruits. The problem which is related to the production of freshly squeezed natural fruit juices from citrus is particularly associated with the fact that citrus fruits are grown at locations close to the Equator. The biggest challenges are related to transport conditions because the transport of freshly squeezed natural fruit juices from these locations to Europe and to other locations in the world is a major problem due to spoilage of goods. That is why concentration is carried out and in this way, it reduces the possibility of spoilage during the long-term transport of fruit juices. These concentrates are then again diluted with water when they arrive at the location of production and reconstituted fruit juices are placed on the market as such.

For the above specified reasons, the price of fruit juice which is obtained from fruit concentrates in relation to freshly squeezed natural fruit juice is not the same, and freshly squeezed natural fruit juices are always more expensive compared to reconstituted fruit juices produced from fruit concentrates. Consequently, it is fraudulent to misleading such products and to mislead consumers to believe that it is a matter of freshly squeezed natural fruit juice and in this way to achieve economic profit by fraud.

This opens up the possibility of inspections to analyze raw materials from producers of fruit juices and to determine what kind of raw material producers use in the production of their products. And furthermore opens up the possibility for producers to check the authenticity of raw materials which they buy from the third parties and for their own production of fruit juices.

EIM-IRMS® method is the only method available that can protect consumers, producers and importers from counterfeit products and illegal practices described above.