Udio bioaktivnih spojeva u rizomu dvodomne koprive (Urtica dioica l.)

undergraduate thesis

• Title (english): Content of bioactive compounds in root of stinging nettle (Urtica dioica l.)
• Author: Hedviga Planinčić
• Mentor: Verica Dragović Uzelac (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: 2016-07-11, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology

Abstract

Cilj ovog istraživanja bio je odrediti utjecaj gnojidbe tla dušikom na udio bioaktivnih spojeva (fenolni spojevi) u rizomu dvodomne koprive. Kao kontrolni uzorak korišten je rizom uzgojen na tlu koje nije tretirano gnojivom, a drugi rizom na tlu koje je tretirano gnojivom u količini 100 kg N/ha. Ekstrakcija ukupnih fenola provedena je primjenom destilirane vode i 50 %-tne vodene otopine etanola (v/v) uz primjenu ultrazvučne kupelji. Fenolni spojevi (ukupni fenoli, flavan-3-oli i hidroksicimetne kiseline) su određeni spektrofotometrijski. Utvrđene su veće koncentracije svih skupina fenolnih spojeva u rizomima koji su tretirani gnojivom u odnosu na netretirane.

Abstract (english)

The aim of this study was to determine the influence of nitrogen fertilization on the content of bioactive compounds (phenolic compounds) in stinging nettle root. The controlled sample used was the cultivated stinging nettle root, which was not treated with nitrogen fertilization. The other sample of stinging nettle root was treated with a solution of 100 kg N/ha nitrogen fertilization. The extractions of total phenols was performed in ultrasound bath using distilled water and 50% aqueous ethanol (v/v) as extraction solvent. Phenolic compounds (total phenols, flavan-3-ols and hydroxycinnamic acid) were detected by spectrophotometric method. The higher amounts of bioactive compounds are determined in the stinging nettle root with 100 kg N/ha fertilization.

• Keywords: fenolni spojevi; rizomi koprive; gnojidba dušikom
• Keywords (english): phenolic compounds; nettle root; nitrogen fertilization
• Language: croatian
• URN:NBN: urn:nbn:hr:159:693208
• Study programme: Title: Food Technology; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka prehrambene tehnologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-04-24 10:55:35