In the paper reported are results of quality control of juices and nectars produced by the members of Voluntary Control System (DSK) (samples purchased on the market or taken during audits) and for the companies which are not members of DSK (samples purchased on the market). Particular attention was paid to products which share on the market is the largest. These were orange, grapefruit and apple juices. The analysis covered the most important parameters that allow qualifying products as authentic or adulterated. In particular cases, taking the advantage of cooperation with SGF/QUISEE, analysis were made in German laboratories to check authenticity of products declared as "direct juice" (analysis of stable isotopes 18O/16O) and to check presence of oligosaccharides and aroma compounds. Most products available on the Polish market already fulfil requirements of Code of Practice. However, there are evident cases of adulteration. In most cases it is dilution of juices and simultaneous addition of sugars and acids. Apple juices are good example. Retailers and official control bodies were informed in detail (including companies' names) about the situation and the proper action was requested. In all investigated black currant nectars excessive amount of sorbitol was found, which indicates addition of other fruit juices reach in sorbitol. In many cases declaration of producers on the labeling were not true. Nevertheless, it may be stated that in the last year quality improvement of investigated products was observed, compared to previous years. Taking into consideration changes in Polish legislation (withdrawal of the Polish Standards concerning juices and nectars and harmonisation of the Polish law with the requirements of the European Union) producers will be obliged to adjust to EU food law. VCS will control this adjustment This will help gaining consumer confidence to juices, nectars and fruit drinks, contributing to consumption increase of these products and will contribute to further development of the Polish fruit juice industry.
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