Določitev nekaterih fizikalno-kemijskih parametrov ajdovega medu

Peras, Ivana (author), Bertoncelj, Jasna (mentor)

Ajdov med spada med redkejše vrste slovenskega medu, zato je bil namen raziskave določiti nekatere njegove fizikalno-kemijske parametre in s tem dopolniti bazo podatkov o ajdovem medu. Desetim vzorcem ajdovega medu slovenskih čebelarjev smo določili vsebnost vode, električno prevodnost, vrednost pH, vsebnost prostih kislin, laktonov in skupnih kislin, diastazno število, vsebnost skupnih fenolnih spojin, antioksidativno učinkovitost ter parametre barve L*, a* in b*. Rezultate smo primerjali z zahtevami Pravilnika o medu (2011) ter z rezultati raziskav domačih in tujih avtorjev. Ugotovili smo, da slovenski čebelarji pridelujejo kakovosten ajdov med, saj so z izjemo enega vzorca, katerega električna prevodnost je bila previsoka, vsi vzorci medu ustrezali pravilniku glede vsebnosti vode, električne prevodnosti, prostih kislin in diastaznega števila. Vsebnost skupnih fenolnih spojin je bila v analiziranih vzorcih ajdovega medu v območju od 272,1 do 510,4 mgGA/kg, antioksidativna učinkovitost, izražena kot % inhibicije, pa je variirala med 14,3 in 68,2 %. Vzorci ajdovega medu so se razlikovali po barvi, temnejši vzorci medu so imeli večjo vsebnost skupnih fenolnih spojin.

• Language: Slovenian
• Keywords: ajdov med, fizikalno-kemijske lastnosti, voda, električna prevodnost, vrednost pH, kisline, laktoni, diastazno število, fenolne spojine, antioksidativna učinkovitost, barva
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Publisher: [I. Peras]
• Year: 2019
• PID: 20.500.12556/RUL-110412
• UDC: 638.162:638.165.8:633.12:543.2/.9
• COBISS.SI-ID: 5096824
• Publication date in RUL: 14.09.2019

PERAS, Ivana, 2019, Določitev nekaterih fizikalno-kemijskih parametrov ajdovega medu [online]. Bachelor’s thesis. I. Peras. [Accessed 2 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=110412

Secondary language

• Language: English
• Title: Determination of selected physico-chemical parameters of buckwheat honey

Abstract

Buckwheat honey is one of the less known types of Slovenian honey so the aim of this graduation thesis was to determine some of its physico-chemical parameters and to update the existing buchwheat honey database. Ten samples of buckwheat honey from Slovenian beekeepers were analysed on water content, electrical conductivity, pH value, free acid, lactone and total acid contents, diastase number, total phenolic content, antioxidant activity and color parameters L*, a* and b*. Obtained results were compared with prescribed values in Honey Regulation (2011) and with results from other studies. The Slovenian beekeepers produce high quality buckwheat honey. With the exception of one honey sample whose electrical conductivity was too high, all honey samples complied with the Honey Regulation regarding water content, electrical conductivity, free acids and diastase number. The content of total phenolic compounds in the analysed buckwheat honey samples ranged from 272.1 to 510.4 mgGA/kg, and the antioxidant activity, expressed as % of inhibition, varied between 14.3 and 68.2 %. Samples of buckwheat honey varied in colour, darker honey samples had a higher total phenolic content.

• Keywords: buckwheat honey, physico-chemical properties, water, electrical conductivity, pH value, acids, lactones, diastase number, phenolic compounds, antioxidant activity, colour