Fizikalno-kemijski sastav fenolnih spojeva i antioksidativna aktivnost plodova bazge (Sambucus nigra L.)

master's thesis

• Title (english): Physico-chemical composition, phenolic compounds and antioxidative activity of elderberries (Sambucus nigra L.)
• Author: Dunja Horžić
• Mentor: Branka Levaj (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Technology of Fruits and Vegetables Preservation and Processing); Zagreb
• Defense date and country: 2005-10-14, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Geografski položaj RH prikladan je za razvoj brojnih vrsta samoniklog jestivog bilja. Bazga predstavlja samo jednu od mnogobrojnih vrsta divljeg voća koje se mogu uspješno iskoristiti kao sirovina za različite prehrambene proizvode. Stoga je cilj ovog rada bio ispitati fizikalno-kemijski sastav, ukupne fenole i antocijane u plodovima bazge ubranim u okolici Gospića, Požege i Zagreba. U istim uzorcima određen je sastav i količina fenolnih spojeva primjenom tekućinske kromatografije visoke djelotvornosti (HPLC) uz UV-Vis Photo Diode Array detekciju. Određena je i antioksidativna aktivnost primjenom DPPH metode. Količina ukupnih fenola u bobicama bazge značajno se razlikovala i bila je najviša u bobicama ubranim u okolici Gospića (1169.8 mg GAE/100 g). Antocijani bili su zastupljeni u rasponu koncentracija od 209,41 – 314,57 mg/100 g. Antioksidativna aktivnost kretala se od 72,83% do 78,26%.

Abstract (english)

Geographical position of RC is appropriate for growth of numerous edible wild plants. Elder is one of many species of wild fruit that can be successfully used as raw material for different food products. Purpose of this work was to investigate physico-chemical composition, total phenol content and anthocyanins in elderberries harvested in Gospić, Požega and Zagreb area. The same samples were tested for type and amount of phenolic compounds by means of high performance liquid chromatography (HPLC) with UV-Vis Photo Diode Array detection. Antioxidative activity was determined using DPPH metod. Amount of total phenolics in elderberries significantly differed. Highest values were detected in elderberries harvested in Gospić area (1169.8 mg GAE/100 g). Amount of anthocyanins varied from 209,41 to 314,57 mg/100 g. Antioxidative activity varied from 72,83% to 78,26%.

• Keywords: Antioksidativna aktivnost; antocijani; fenolne tvari; HPLC; plodovi bazge
• Keywords (english): Antioxidative activity; anthocyanins; elderberry; HPLC; phenolic compounds
• Language: croatian
• URN:NBN: urn:nbn:hr:159:610171
• 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: 2017-09-12 07:39:56