Kakvoća pčelinjeg voska na međunarodnom tržištu

master's thesis

• Title (english): Quality of beeswax on the international market
• Author: Gloria Ledinski
• Mentor: Lidija Svečnjak (mentor)
• Committee member: Lidija Svečnjak (predsjednik povjerenstva)
• Committee member: Dragan Bubalo (član povjerenstva)
• Committee member: Marko Vinceković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2021-07-09, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Zbog nedostatka zakonske regulative i obvezne kontrole kakvoće, pčelinji je vosak česta meta patvorenja i rastući problem diljem svijeta. Cilj je ovog rada bio utvrditi kakvoću pčelinjeg voska na meĎunarodnom trţištu. Uzorci pčelinjeg voska (satnih osnova i blokova voska) prikupljeni su iz 33 Zemlje svijeta (n=300) te analizirani metodom infracrvene (FTIR-ATR) spektroskopije. Rezultati su pokazali kako je 166 (55,3 %) uzoraka bilo patvoreno parafinom (51 %) i stearinom/stearinskom kiselinom (4,3 %). Udio parafina u patvorenim uzorcima kretao se od 3,5 do 100 %, a stearina/stearinske kiseline od 1,5 do 29,2 %. Najviši udjeli parafina (> 90 %) utvrĎeni su u uzorcima iz Bosne i Hercegovine, Srbije i Kine, a stearin/stearinska kiselina su detektirani u uzorcima iz Belgije i Nizozemske. Patvorine nisu utvrĎene samo u uzorcima iz nekoliko europskih zemalja (Luksemburg, Švedska i Ujedinjeno kraljevstvo), afričkih zemalja (Kamerun, Kongo, Etiopija) te Australije, Novog Zelanda, Kanade, Rusije i Vijetnama. Rezultati ovog istraţivanja ukazuju na hitnu potrebu za rješavanjem problema patvorenja pčelinjeg voska na meĎunarodnoj razini.

Abstract (english)

Due to the lack of legislation and mandatory quality control, beeswax is a frequent target of adulteration and a growing problem worldwide. The aim of this study was to determine the quality of beeswax on the international market. Beeswax samples (comb foundations and beeswax blocks) were collected from 33 countries (n=300), and analysed by infrared (FTIR-ATR) spectroscopy. The results have revealed that 166 (55.3%) samples were adulterated with paraffin (51%) and stearin/stearic acid (4.3%). The proportion of paraffin in adulterated samples ranged from 3.5 to 100%, and of stearin/stearic acid from 1.5 to 29.2%. The highest proportions of paraffin (> 90%) were detected in samples from Bosnia and Herzegovina, Serbia and China, while stearin/stearic acid were detected in samples from Belgium and Netherlands. Adulterants were not found only in samples from several European countries (Luxembourg, Sweden and the United Kingdom), African countries (Cameroon, Congo, Ethiopia), as well as Australia, New Zealand, Canada, Russia and Vietnam. The results of this study indicate an urgent need to resolve the problem of beeswax adulteration on international level.

• Keywords: pčelinji vosak; kakvoća; patvorenje; meĎunarodno trţište
• Keywords (english): beeswax; quality; adulteration; international market
• Language: croatian
• URN:NBN: urn:nbn:hr:204:911757
• 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: Open access
• Created on: 2021-11-16 09:55:06