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Determination of selected metals in fruit compotes
Hauerlandová, Petra ; Vespalcová, Milena (referee) ; Diviš, Pavel (advisor)
This diploma thesis deals with the determination of some metals in fruit compotes packed in cans. There is described the production of fruit compotes and metal packaging legislation relating to the studied issues, the possibility of contamination of food packaging components, packaging corrosion, metal migration from packaging and techniques used for the analysis of metals in the food industry. Concentrations of metals in 14 different fruit compotes from a commercial network in the Czech Republic were determined by ICP-MS technique in the experimental part. Concentrations of metals were detected only in the juice of stewed fruit, because the juice is in direct contact with the surface of packaging, and metals are transferred first into it. The measured values were compared with the maximum permissible levels of metals in fruit compote determined by European legislation. In some cases there were found higher concentrations of tin, but other metals did not exceed the allowable amounts. Concentrations of metals in the compote varied depending on the kind of compote, which could be due to a different chemical composition of compotes depending on the origin of food and process of the fruit production, or a different cans coating material.
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Speciální diety ve výživě a terapii u psů
Buchníčková, Daniela
The thesis presents the basics of dog nutrition and especially special diets that are used in dog nutrition as a part of the therapy or disease prevention. In a practical part are results of observation which was held in one year duration on animal clinic. This work provides data about dogs with disease in 2022, where a special diet was recommended. It was found that 85 patients came to the veterinary clinic and were recommended the Royal Canin Revocery veterinary diet which is suitable for dogs after surgery, during hospitalization and after recovery, when was necessary to supprot nutritional recovery and holding the muscle mass. The second most common recommended diet was the Royal Canin Hypoallergenic for patients with a proven intolerance to a certain food intolerance (71 dogs). On the third place, were 34 new patients with the gastrointestinal tract disease. Furthermore, the total amount of special diets for the year 2022 was evaluated, it was divided into granulated and canned feed. It was found that tins were more sold out compare to the dry food. The most sold cans were Royal Canin Gastrointestinal low fat diet and Royal Canin Recovery. In the last part of the thesis is a specific case of patient which was diagnosed with acute kidney failure. For the period of three months at homecare, the dog was feed with special Royal Canin Renal which was determined for his disease. After three months after the diagnosis of acute kidney disease and feeding the special diet a biochemical examination was done for the check the effect of a special diet.
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Determination of selected metals in fruit compotes
Hauerlandová, Petra ; Vespalcová, Milena (referee) ; Diviš, Pavel (advisor)
This diploma thesis deals with the determination of some metals in fruit compotes packed in cans. There is described the production of fruit compotes and metal packaging legislation relating to the studied issues, the possibility of contamination of food packaging components, packaging corrosion, metal migration from packaging and techniques used for the analysis of metals in the food industry. Concentrations of metals in 14 different fruit compotes from a commercial network in the Czech Republic were determined by ICP-MS technique in the experimental part. Concentrations of metals were detected only in the juice of stewed fruit, because the juice is in direct contact with the surface of packaging, and metals are transferred first into it. The measured values were compared with the maximum permissible levels of metals in fruit compote determined by European legislation. In some cases there were found higher concentrations of tin, but other metals did not exceed the allowable amounts. Concentrations of metals in the compote varied depending on the kind of compote, which could be due to a different chemical composition of compotes depending on the origin of food and process of the fruit production, or a different cans coating material.
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