Određivanje aktivnosti invertaze i dijastaze u različitim uzorcima meda

master's thesis

• Title (english): Determination of invertase and diastaze activity in different honey samples
• Author: Maja Kordić
• 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: 2010-03-10, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Med je namirnica bitnih nutritivnih i ljekovitih svojstava. Kvaliteta meda jedan je od bitnih čimbenika plasmana meda na tržište, koja utječe na njegovu uporabu i važnost u prehrani. Ona se određuje mjerenjem fizikalno-kemijskih svojstava meda. Ta svojstva ovise o mnogim čimbenicima kao što su geografsko i botaničko podrijetlo, klimatski uvjeti, način proizvodnje te uvjeti, način i dužina skladištenja. Cilj ovog rada bio je odrediti aktivnost enzima invertaze u 101 uzorku meda i aktivnost enzima dijastaze u 68 uzoraka meda prikupljenih s područja Republike Hrvatske. Ustanovljeno je da se aktivnost invertaze kretala u rasponu od 0,84 do 33,99 IN, a aktivnost dijastaze između 2,87 do 13,55 DN. Od 101 uzorka u kojima je određena aktivnost invertaze njih 9 ne zadovoljava dodatni kriterij IHC-a. Aktivnost dijastaze određena u samo 2 uzorka od ukupno 68 zadovoljava zahtjev Pravilnika.

Abstract (english)

Honey is foodstuff with important nutritional and therapeutic properties. Quality of honey is one of the mayor factors when placing honey on market. It also has got a great impact on 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 activity of enzyme invertase of 101 honey samples and the activity of enzyme diastase of 68 honey samples collected from areas of Republic of Croatia. It was found that the mass content of the invertase activity varied from 0,84 to 33,99 IN and diastase activity between 2,87 and 13,55 DN. 9 out of 101 honey samples, in which was measured invertase activity, do not satisfie required criteria for IHC. Diastase activity in only 2 honey samples, measured in 68 honey samples, satisfies required criteria for quality.

• Keywords: med; dijastaza; invertaza
• Keywords (english): honey; diastase; invertase
• Language: croatian
• URN:NBN: urn:nbn:hr:159:483599
• Study programme: Title: Food Technology; specializations in: Food Engineering; Course: Food Engineering; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer prehrambene tehnologije; smjer prehrambeno inženjerstvo (diplomirani inženjer prehrambene tehnologije; smjer prehrambeno inženjerstvo)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-08-29 07:44:21