Fizikalno-kemijska svojstva bagremova meda s područja Krapinsko-zagorske županije

master's thesis

• Title (english): Physicochemical properties of black locust honey from the area of Krapina-zagorje county
• Author: Martina Krog
• Mentor: Dragan Bubalo (mentor)
• Committee member: Dragan Bubalo (predsjednik povjerenstva)
• Committee member: Lidija Svečnjak (član povjerenstva)
• Committee member: Nenad Jalšenjak (član povjerenstva)
• Committee member: Saša Prđun (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2019-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Područje Krapinsko-zagorske županije jedinstveno je područje s obzirom na bagremove sastojine na razini RH. Stoga je cilj rada bio utvrditi botaničko podrijetlo i fizikalno-kemijske parametre uzoraka bagremova meda s različitih lokaliteta, kao i utvrditi korelacije između uniflornosti meda s električnom provodnošću i pH vrijednošću. U uzorcima meda je utvrđeno botaničko podrijetlo, udio vode, električna provodnost, pH vrijednosti i sadržaj hidroksimetilfurfurala. Raspon uniflornosti se kretao 24 - 80%. Statistički značajno niža vrijednost električne provodnosti je bila utvrđena u uzorcima meda iz 2016. (0,15 mS/cm) u odnosu na one iz 2017. (0,19 mS/cm). U uzorcima meda iz 2016. godine je bilo utvrđeno statistički značajno više (4,98 mg/kg) HMF-a u odnosu na one iz 2017. godine (3,69 mg/kg). Između uniflornosti i pH vrijednosti meda je bila utvrđena srednje jaka pozitivna korelacija (r=0,36), a između električne provodnosti i uniflornosti meda srednje jaka negativna korelacija (r=-0,47).

Abstract (english)

The area of Krapina-Zagorje County is a unique region of Croatia covered with black locust forests which provide a plethora of distinctive and prestigious honey. The aim of this work was to determine the botanical origin and physico-chemical parameters of black locust honey samples from different localities. Furthermore, this paper established a correlations between the uniflorality of honey with electrical conductivity and pH value. Samples of honey that were tested determined a botanical origin, water content, electrical conductivity, pH and hydroxymethylfurfural content. Levels of uniflorality ranged from 24 - 80%. There was a low statistically significant value of electrical conductivity determined in honey samples from 2016 (0.15 mS / cm) compared to those from 2017 (0.19 mS / cm). In the 2016 honey samples, a high statistically significant value of HMF was found (4.98 mg/kg) compared to 2017 (3.69 mg/kg). There was a medium-positive correlation confirmed between the uniflorality and pH of black locust honey (r=0.36) and a medium-negative correlation (r=-0.47) between electrical conductivity and honey uniflorality.

• Keywords: Krapinsko-zagorska županija; bagremov med; botaničko podrijetlo; fizikalno-kemijski parametri
• Keywords (english): Krapina-Zagorje County; black locust honey; botanical origin; physicochemical parameters
• Language: croatian
• URN:NBN: urn:nbn:hr:204:774832
• Study programme: Title: Organic Agriculture with Agrotourism; Study programme type: university; Study level: graduate; Academic / professional title: magistar / magistra inženjer/inženjerka ekološke poljoprivrede i agroturizma (magistar / magistra inženjer/inženjerka ekološke poljoprivrede i agroturizma)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2019-10-30 07:42:07