This diploma thesis deals with monitoring changes in vitamin C content in food supplements due to storage conditions. Changes were observed for two types of effervescent tablets with different vitamin C content (40 mg and 500 mg). Each type was packed into a tablet tub with different caps - molecular sieve, silica gel, and only the cap itself. The analysis was carried out immediately after the production and subsequently after 3 months. The vitamin C content was determined by titration and high-performance liquid chromatography. Based on the measurements, it was found that the storage time after 3 months and the type of cap did not have a significant effect on the vitamin C content of the effervescent tablets. Differences may occur due to imperfect homogenization and degradation of vitamin C in daylight. During the supplementary evaluation the solubility time, flavour and colour were determined by dissolving effervescent tablets. As a result of supplementary evaluation all the effervescent tablets, both in the first and second assessments, exhibited the properties declared by the producer.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:427092 |
| Date | January 2018 |
| Creators | Preislerová, Stefanie |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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