A concentrate is a form of substance that already has most of its basic components (in case of liquid: solvent) removed. Typically, this will remove water from solution or suspension, such as drainage from fruit juice. One of the benefits of producing concentrates is the reduction of weight and volume for transportation, since the concentrate can be reconstituted at the time of use with the addition of solvent.
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Concentrations of soft drinks
The process of concentrating orange juice was patented in 1948. It was originally developed to provide World War II troops with a reliable source of vitamin C. Currently, the majority of orange juice retail is made from a concentrated orange juice concentrate.
Most sodas and soft drinks are produced as highly concentrated syrup and then diluted with carbonated water directly before consumption or bottling. Such concentrated syrup is sometimes sold to end consumers because the price is relatively cheap and the weight savings are quite large. Thickened milk is also produced for heavy transportation and resistance to decay.
Most juice and soda concentrates have a long shelf life due to high sugar content and/or additional preservatives.
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References
Source of the article : Wikipedia