Određivanje nekih parametara kvalitete u uzorcima različih vrsta meda

master's thesis

• Title (english): Determination of few quality parametars in different honey samples
• Author: Karmen Matković
• Mentor: Nada Vahčić (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Quality Control); (Laboratory for Food Quality Control); Zagreb
• Defense date and country: 2009-07-14, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Kvaliteta meda je najvažniji parametar koji utječe na njegovu uporabu, prehrambenu važnost i plasman na tržište. Med koji se nalazi na tržištu, kvalitativno se razlikuje u više faktora kao što su geografsko i botaničko podrijetlo, klimatski uvjeti, uvjeti proizvodnje, pakiranje, uvjeti i vrijeme skladištenja. U ovom radu, ispitano je 137 uzoraka meda prikupljenih s područja Republike Hrvatske i Republike Slovenije. Ispitivanje je provedeno u svrhu određivanja fizikalnokemijskih parametara. Određivan je maseni udio hidroksimetilfurfurala, udio prolina i specifični kut rotacije. Podaci su statistički obrađeni, pri ćemu su dobiveni sljedeći rezultati: maseni udio HMF-a se kretao od 0,19 mg/kg do 65,66 mg/kg, udio prolina od 6,17 mg/kg do 1189,04mg/kg i specifični kut rotacije od -18,0 do +17,0. Tri uzorka ne zadovoljavaju zahtjev Pravilnika o kakvoći meda i drugih pčelinjih proizvoda za dozvoljeni maseni udio HMF-a, a 52 uzoraka ne zadovoljava dodatni kriterij IHC-a za dozvoljeni udio prolina. Za specifični kut rotacije nema propisanih vrijednosti.

Abstract (english)

Honey quality is the most important parameter that influences on its usage, nutritional importance and comercial ranking. Honey samples that are available commercially, differ in quality on account of various factors like geografical and botanic origin, climate, processing conditions, packaging, conditions and time of storage. The aim of this study was to specify physico-chemical properties of 137 honey samples collected from areas of Republic of Croatia and Republic of Slovenia. Content of hydroxymethylfurfural (HMF), content of proline and specific optical rotation were determined and the facts have been statisticly analyzed. It was found that the mass content of HMF varied from 0,19 mg/kg to 65,66 mg/kg, content of proline from 6,17 mg/kg to 1189,04 mg/kg and specific optical rotation from -18,0 to +17,0. Three samples do not satisfy the conditions given by Croatian regulations for HMF, and 53 samples do not satisfy the conditions given by IHC for proline. There are no regulations for specific optical rotation.

• Keywords: hidroksimetilfurfural (HMF); med; prolin; specifični kut rotacije
• Keywords (english): honey; hydroxymethylfurfural (HMF); proline; specific optical rotation
• Language: croatian
• URN:NBN: urn:nbn:hr:159:608223
• Study programme: Title: Food Technology; specializations in: Nutrition; Course: Nutrition; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer prehrambene tehnologije; smjer nutricionizam (diplomirani inženjer prehrambene tehnologije; smjer nutricionizam)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-08-30 13:02:36