This thesis deals with the qualitative and quantitative representation of vitamins in the meat-vegetables based infant food. The work is divided into the theoretical and the experimental part. The theoretical part describes a child nutrition and the vitamins. In the chapters, dealing with vitamins, is a description of particular vitamins, their biological functions in the body, the recommended daily dose and their stability during food processing. These chapters concern fat-soluble vitamins (vitamin A, D, E and K) and water-soluble vitamins (B-group vitamins and vitamin C) as well. The work deals with nutrition of infants, toddlers and young children under age of 10 years too. For the each age group there is given the daily recommended dose of vitamins. Experimental part deals with the quantification of vitamins (retinol, ascorbic acid, A-tocopherol and B-carotene) by the HPLC analysis in the samples of the meat-vegetables based infant food. The influence of storage time and conditions (exposure to daylight vs storage in the dark) was measured on concetration of the examined vitamins in the samples. The results were statistically analyzed using software Statistica 12 (Wilcoxon signed-rank test, linear regression, p<0,05) and showed, that all monitored vitamins degrades during storage. The concetration of vitamins in the product is also influenced by the storage conditions (the faster degradation of vitamins occurred in samples exposed to daylight).
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:362618 |
| Date | January 2016 |
| Creators | Solčány, Veronika |
| 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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