The target of this thesis was found content of eight biogenic amines and polyamines, specifically putrescine (PUT), spermidine (SPD), spermine (SPM), histamine (HIM), cadaverine (CAD), 2-phenylethylamine (PEA), tyramine (TYM) and tryptamine (TRM) in growed Agaricus hortensis during storage, frozen and heat treatment. There are many information dealing with these amines in the food in this time, but unfortunately data on the content of amines in edible mashrooms in literature are still missing. The samples were providing from company České houby a.s. in Soběslav. Those mushrooms were immediately processed. Frozen samples in PE sack (plastic bags) were tracked during three months. Boiled, blanched and raw samples of mushrooms were analysed in the beginning of concentration at day 0 and then 1, 2 and 4 days at 6 °C in the storage. Some samples of each experiment monitored after one day of storage at 22°C. Absolutely the highest concentrations found in all experiments with SPD. Changes in the content of amine modified and raw mushrooms during 4 days of storage at 6 ° C flow in both directions. The most important changes are visible immediately after blanching - a significant increase in TYM and even more pronounced in SPM. The increase was also showed in the content of the cooked mushrooms, in the SPD and to a higher volume in SPM. Storage at 22 ° C was mostly affected content PEA - the cooked mushrooms content significantly decreased, but blanched mushrooms increased. Also in raw mushrooms lead storage at this temperature for a significant increase in the SPM. Freezing substantially affect any of the amines. TRM and CAD analysis were not detected; HIM at lower limit was detected after cooking mushrooms and after storage of raw mushrooms at 22 ° C. I hope that the observed data can help extend the data in the literature and offers the opportunity to further focus of research in the field of biogenic amines in edible mushrooms.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:156227 |
| Date | January 2013 |
| Creators | PEKÁRKOVÁ, Jana |
| 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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