Sadržaj metala i polumetala u komercijalno dostupnim uzorcima riže s hrvatskog tržišta: procjena rizika za zdravlje potrošača

master's thesis

• Title (english): Metal and metalloid content in commercially available rice samples from the Croatian market: consumer health risk assessment
• Author: Karla Tomljanović
• Mentor: Ivana Rumora Samarin (mentor)
• Committee member: Zoran Zorić (predsjednik povjerenstva)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Quality Control); (Laboratory for Food Chemistry and Biochemistry); Zagreb
• Defense date and country: 2022-05-05, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Nutrition

Abstract

Riža (Oryza Sativa) je jednogodišnja biljka iz porodice trava koja se smatra jednom od najčešće konzumiranih žitarica u svijetu. Predstavlja važan izvor energije zbog visokog sadržaja ugljikohidrata te vrijedan izvor mikronutrijenata. Može sadržavati povećane razine toksičnih elementa, posebice As, što predstavlja ozbiljan zdravstveni rizik. Cilj ovog rada bio je odrediti sadržaj metala i polumetala u 58 uzoraka riže s hrvatskog tržišta primjenom metode ICP-MS, istražiti povezanost između razina elemenata u riži i načina prerade (bijela, pretkuhana i integralna), uzgoja (konvencionalni i organski) i podrijetla riže te procjeniti nutritivnu korist i rizke konzumacije riže zbog unosa različitih elemenata na zdravlje potrošača. Bijela riža sadrži manje Mg, P, K, Fe, Fe, Mn, Co, Zn i Se od integralne te manje P, K i Ca od pretkuhane riže. Riže podrijetlom iz Europske Unije imaju više As i manje Se od riža podrijetlom iz Azije. Način uzgoja riže može utjecati na mineralni sastav riže.

Abstract (english)

Rice (Oryza Sativa) is a staple food considered one of the most consumed grains in the world. It is an important source of energy due to its high carbohydrate content and a valuable source of micronutrients. Rice may contain increased levels of toxic elements, especially As, which poses a serious health risk. The aim of this study was to determine the content of metals and metalloids in 58 rice samples from the Croatian market using the ICP-MS method, to investigate the relationship between element levels in rice and processing method (white, parboiled and brown), cultivation (conventional and organic) and rice origin and to assess the risk to consumer health. White rice contains lower levels of Mg, P, K, Fe, Fe, Mn, Co, Zn and Se than brown and lower levels of P, K and Ca than parboiled rice. Rice from the European Union has higher As and lower Se levels than rice from Asia. The cultivation method can affect the mineral composition of rice.

• Keywords: riža; esencijalni i toksični mineralni elementi; procjena unosa
• Keywords (english): rice; essential and toxic elements; intake assessment
• Language: croatian
• URN:NBN: urn:nbn:hr:159:224863
• Study programme: Title: Nutrition; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra nutricionizma (magistar/magistra nutricionizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-06-29 10:23:44