The main aim of this study was to monitor and evaluate nitrate contents in vegetables, offered in the network of markets, from anti-nutritive point of view. The nitrate content was monitored in common vegetable types in the course of a year. The selected supermarkets were used as the source of samples. The ion-selective electrode measurement method was used to set the nitrate content. The analysed samples were provided in Billa markets in Jindřichův Hradec and in Heidenreichstein in Austria. In total 149 samples were analysed, 71 were provided in the Czech markets and 78 in Austria. The leaf and root vegetables were tested, especially lettuce, iceberg lettuce, a carrot, a parsley and a radish. The lowest measured value 21 mg NO3-.kg-1 was taken from the parsley from the Czech Republic. The highest nitrate content was detected in the lettuce also originated from the Czech production and reached 5200 mg NO3-.kg-1. In the final comparison with the neighbouring Austria, the Czech samples have shown, except for the carrot, higher nitrate contents.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:154611 |
| Date | January 2013 |
| Creators | RŮŽEK, Marek |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
Page generated in 0.0022 seconds