Sadržaj bioaktivnih komponenti matičnog soka i voćne kaše goji bobica (Lycium barbarum)

master's thesis

• Author: Iva Jagatić
• Mentor: Sandra Voća (mentor)
• Committee member: Sandra Voća (predsjednik povjerenstva)
• Committee member: Nadica Dobričević (član povjerenstva)
• Committee member: Boris Duralija (član povjerenstva)
• Committee member: Jana Šic Žlabur (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Sustainable Technologies and Renewable Energy Sources); Zagreb
• Defense date and country: 2017-06-09, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy; Fruit Growing

Abstract

Goji je drvenasta grmolika biljka iz porodice Solanaceae čiji su plodovi bogatog sadržaja biološki aktivnih spojeva, vitamina, minerala, karotenoida. Cilj ovog rada bio je utvrditi kemijski sastav i sadržaj bioaktivnih tvari u uzorcima svježih plodova goji bobica, matičnog soka i kaše te temeljem dobivenih rezultata utvrditi postoje li razlike u nutritivnom sastavu navedenih uzoraka. Analizom nutritivnog sastava istraživanih uzoraka svježih plodova goji bobica, kaše i matičnog soka utvrđene su značajne razlike u sastavu bioaktivnih tvari: vitamina C, beta karotena, fenola, flavonoida i neflavonoida. U uzorcima voćne kaše goji bobica dokazan je znatno veći sadržaj bioaktivnih tvari i veći antioksidacijski kapacitet u usporedbi s uzorcima matičnog soka i svježih plodova. Iskoristivost soka kod goji bobica je vrlo niska, svega 35,79 %, no s obzirom na rezultate nutritivnog sastava, sok goji bobica predstavlja važan proizvod. Temeljem dobivenih rezultata može se utvrditi kako su prema nutritivnom sastavu i sadržaju bioaktivnih tvari uzorci voćne kaše najznačajniji izvor hranjivih tvari, dok se najveća prisutnost vitamina C i beta karotena nalazi u svježim plodovima goji bobica.

Abstract (english)

Goji is a woody shrub plant in the family Solanaceae with fruits rich in biologically active compounds, vitamins, minerals, carotenoids. The aim of this study was to determine the chemical composition and bioactive compounds content in fresh goji berries, goji juice and fruit pulp. Based on the results of nutritional composition to determine the differences between analyzed goji samples. The nutritional composition analysis of the studied goji samples (fresh berries, juice and pulp) showed significant differences in the content of bioactive compounds: vitamin C, beta carotene, phenols, flavonoids and non-flavonoids. In samples of goji pulp a significantly higher content of bioactive compounds and antioxidant capacity was determined compared with juice samples and fresh berries. The juice yield from goji berries is relatively very low, only 35,79 %, but according to the results of nutritional composition, goji juice is an important product. Based on the research results can be concluded that, according to the nutritional composition and content of bioactive compounds, samples of goji pulp represent the most valuable source of nutrients while the highest content of vitamin C and beta carotene was determined in fresh goji berries.

• Keywords: goji bobice; nutritivni sastav; sok; voćna kaša; bioaktivni spojevi; antioksidacijski kapacitet
• Keywords (english): goji berries; nutritional composition; juice; pulp; bioactive compound; antioxidant capacity
• Language: croatian
• URN:NBN: urn:nbn:hr:204:676682
• Study programme: Title: Horticulture; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka hortikulture (magistar/ magistra inženjer/inženjerka hortikulture)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-07-26 08:14:05