The thesis Phthalates in yoghurts during storage focuses on monitoring of phthalic acid esters in yogurt samples in relation to their storage period. The analyzed phthalates are di-2-(ethylhexyl)-phthalate (DEHP) and di-n-butyl-phthalate (DBP), which are among the most commonly used polymeric plasticizers, especially polyvinyl chloride. I analyzed samples of yoghurt with 1 % and 5 % chia and bamboo fiber and then subsequently compared them with natural yogurts. In total, I analyzed 120 samples of yoghurt, for which I measured DBP concentrations ranging from 0.2 mg.kg-1 to 7.7 mg.kg-1 of the original raw material and concentration of undetected values of DEHP in range up to 2.6 mg.kg-1 of the original raw material. While analyzing the yoghurt packaging, I measured average DBP values of 174.1 μg.dm-2 (68.0 μg.g-1 plastic) and DEHP values of 26.2 μg.dm-2 (10.2 μg.g-1 plastic). After prior preparation of samples, I used high performance liquid chromatography to do the phthalates analysis.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:426830 |
| Date | January 2018 |
| Creators | Stará, Markéta |
| 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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