Određivanje masenog udjela prolina te aktivnosti invertaze i dijastaze u različitim uzorcima meda

master's thesis

• Title (english): Determination of proline mass content, invertase and and diastaze activity in different honey samples
• Author: Lidija Lucić
• 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: 2012-05-02, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Med je namirnica značajnih nutritivnih i ljekovitih svojstava, čija kvaliteta utječe na njegovu uporabu i važnost u prehrani. Kvaliteta se određuje mjerenjem fizikalno-kemijskih parametara meda. Ti parametri ovise o mnogim čimbenicima kao što su geografsko i botaničko podrijetlo, klimatski uvjeti, način proizvodnje te uvjeti, način i vrijeme skladištenja. Cilj ovog rada bio je odrediti maseni udio prolina, aktivnost enzima invertaze i dijastaze u 39 uzoraka meda prikupljenih s područja Republike Hrvatske. Maseni udio prolina kretao se u rasponu od 98,4 do 843,6 mg/kg, aktivnost invertaze kretala se u rasponu od 2,7 do 28,4 IN, a aktivnost dijastaze između 4,1 do 39,0 DN. Od 39 uzorka u kojima je određen maseni udio prolina 4 uzorka ne zadovoljavaju kriterij Codex Alimentarius Commission, dok za aktivnost invertaze njih 2 ne zadovoljavaju kriterij Codex Alimentarius Commission-a. Aktivnost dijastaze određena u 8 uzoraka od ukupno 39 ne zadovoljava zahtjev Pravilnika.

Abstract (english)

Honey is food stuff with signicifant nutritional and therapeutic properties whose quality impacts its use and human nutrition. Quality is determined by measuring, physicochemical properties of honey. Those properties depend on numerous factors such as geographical and botanical origin, climate, processing, conditions and time of storage. The aim of this study was to determine content of proline, activity of enzymes invertase and the diastase of 39 honey samples collected from areas of Republic of Croatia. Mass content of proline varied from 98,4 to 843,6 mg/kg, diastase activity between 4,1 and 39,0 DN and invertase activity between 2,7 to 28,4 IN. Four out of 39 honey samples, in which was measured content of proline and 2 out of 39 for invertase activity, do not satisfie required criteria for Codex Alimentarius Commission. Diastase activity in 8 honey samples, measured in 39 honey samples, do not satisfies required criteria for quality too.

• Keywords: med; prolin; dijastaza; invertaza
• Keywords (english): honey; proline; diastase; invertase
• Language: croatian
• URN:NBN: urn:nbn:hr:159:822973
• 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: 2017-05-17 13:10:06