Nutritivni sastav češnjaka (Allium sativum L.) iz ekološkog i konvencionalnog uzgoja

master's thesis

• Title (english): Nutrient composition of garlic from organic and conventional breeding
• Author: Antonija Franjić
• Mentor: Sandra Voća (mentor)
• Committee member: Sandra Voća (predsjednik povjerenstva)
• Committee member: Nadica Dobričević (član povjerenstva)
• Committee member: Sanja Fabek Uher (član povjerenstva)
• Committee member: Jana Šic Žlabur (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Technology, Storage and Transport); Zagreb
• Defense date and country: 2017-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Češnjak (Allium sativum L.) je jedna od najpopularnijih vrsta iz porodice lukova koja sadrži brojne biološki aktivne tvari, uključujući minerale, vitamine, aminokiseline i polifenolne spojeve koji pokazuju značajnu antioksidacijsku aktivnost. Na nutritivna svojstva i sadržaj bioaktivnih komponenata utječu klimatski uvjeti, ekotip i način uzgoja, a češnjak iz ekološkog uzgoja smatra se nutritivno kvalitetnijim u odnosu na češnjak iz konvencionalnog uzgoja.
Glavni cilj ovog diplomskog rada bio je utvrditi razlike u kemijskom i nutritivnom sastavu lukovica češnjaka porijeklom iz ekološkog i konvencionalnog uzgoja. U svrhu utvrđivanja nutritivnog sastava provedene su sljedeće analize: sadržaj suhe tvari (%), sadržaj topljive suhe tvari (%), sadržaj ukupnih kiselina (%), pH- vrijednost, sadržaj vitamina C (mg/100 g svježe tvari), sadržaj ukupnih fenola: flavonoida i neflavonoida (mg GAE/100 g svježe tvari) i antioksidacijski kapacitet.
Temeljem dobivenih rezultata može se zaključiti kako češnjak iz ekološkog uzgoja pokazuje značajno veću nutirtivnu kvalitetu posebice u sadržaju fenolnih spojeva i vitamina C.

Abstract (english)

Garlic (Allium sativum L.) is one of the most popular species of onions which contains many biologically active substances including minerals, vitamins, amino acids, and polyphenolic compounds that exhibit significant antioxidant activity. The nutritional properties and the content of bioactive components are influenced by climatic conditions, ecotype and production method, and ecological garlic is considered nutritionally superior than garlic from conventional production.
The main objective of this thesis was to analyze the nutritional composition of garlic bulbs which is orginating from ecological and conventionalproduction. Following chemical analysis, in purpose of determining nutritional composition, was conducted: dry matter content (%), soluble dry matter content (%), total acidity content (%), pH-value, vitamin C content (mg/100g), total phenols content: flavonoids and noflavonoids (mgGAE/100 g) and antioxidant capacity.
Based on the obtained results it can be concluded that garlic which is orginating from ecological breeding shows a significantly higher nutritional quality, especially in the content of phenolic compounds and vitamin C.

• Keywords: češnjak; ekološki uzgoj; vitamin C; polifenoli; antioksidacijski kapacitet
• Keywords (english): garlic; ecological production; vitamin C; polyphenol; antioxidant capacity
• Language: croatian
• URN:NBN: urn:nbn:hr:204:029465
• 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
• Repository: Repository Faculty of Agriculture University of Zagreb
• Created on: 2017-11-20 10:38:40