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Vsebnost težkih kovin v tunini
Muratović, Kanija (Author), Abramovič, Helena (Mentor) More about this mentor... This link opens in a new window, Vidrih, Rajko (Reviewer)

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Abstract
Tunina je vir več esencialnih hranil, vsebuje številne vitamine in minerale ter je bogata z nenasičenimi omega-3 maščobnimi kislinami zaradi česar velja za zdravo in kakovostno hrano. Vendar pa so raziskave pokazale, da vsebuje tunina tudi velike količine težkih kovin, kar potencialno ogroža človekovo zdravje. Arzen, kadmij, živo srebro in svinec so toksični elementi, ki se pogosto akumulirajo v mesu rib, kar lahko ob prevelikem vnosu vodi do zdravstvenih težav. Evropska komisija je v dokumentu No 1881/2006 tako določila maksimalne vrednosti, ki so dovoljene za težke kovine. Meja za vsebnost živega srebra je 1 mg/kg tunine, za svinec je 0,3 mg/kg tunine ter za kadmij 0,1 mg/kg tunine. V obravnavanih raziskavah za večino vzorcev niso zaznali prekoračenih maksimalnih dovoljenih količin v mesu rib. Tune, ki so vsebovale previsoke koncentracije težkih kovin, so bile ujete na industrijsko razvitem, onesnaženem in vulkansko aktivnem območju. V raziskavah so potrdili povezavo med velikostjo ribe in akumulacijo težkih kovin. Literaturni podatki kažejo, da je z velikostjo ribe koncentracija težkih kovin višja. Kljub temu, da je vsebnost toksičnih elementov, ki so jih določili v tunini, pod postavljeno mejo, priporočajo raziskovalci zmerno uživanje ribjega mesa, da ne pride do prekoračitve dopustnih tedenskih vnosov težkih kovin.

Language:Slovenian
Keywords:tuna, težke kovine, arzen, živo srebro, kadmij, svinec, analizne metode, maksimalne dovoljene količine, dopustni tedenski vnos težkih kovin
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:BF - Biotechnical Faculty
Year:2018
Publisher:[K. Muratović]
UDC:637.56:597.556.334.111:543.272
COBISS.SI-ID:4896888 This link opens in a new window
Views:1437
Downloads:382
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Secondary language

Language:English
Title:The content of heavy metals in tuna meat
Abstract:
Tuna fish is a source of more essential nutrients, contains vitamins and minerals, and is rich in unsaturated omega- 3 fatty acids. Therefore, fish are considered as healthy and good quality food. However, research shows that in addition to all benefits that consumption of tuna meat shows, tuna also contain large quantities of heavy metals that can potentially threaten human health. Arsenic, lead, cadmium and mercury are toxic elements, which are often accumulated in fish meat. The European Commission has therefore set maximum concentration limits for heavy metals in document: No 1881/2006. The limit for total mercury is 1 mg/kg of tuna, lead is 0.3 mg/kg of tuna and for cadmium is 0.1 mg/kg of tuna. According to studies, in most samples, maximal allowed quantities in fish meat were not exceeded. Samples, which contained excessive concentrations of heavy metals, were obtained from fish caught in a polluted and volcanic active area. Research has confirmed the correlation between the fish size and the accumulation of heavy metals. According to literature data, a higher concentration of heavy metals was detected in adult fish. Despite the fact that toxic elements in the tuna are detected below the limit, researchers recommend moderate consumption of fish meat in order to avoid excess of tolerable weekly intake.

Keywords:tuna fish, heavy metals, arsen, mercury, cadmium, lead, analytical methods, maximum allowable limits, tolerable weekly intake

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