Prinos i sadržaj specijaliziranih metabolita mladih izdanaka aromatičnog bilja

master's thesis

• Title (english): Yield and content of specialized metabolites in the aromatic herbs microgreens
• Author: Mia Vrbanić
• Mentor: Sanja Fabek Uher (mentor)
• Committee member: Sanja Fabek Uher (predsjednik povjerenstva)
• Committee member: Jana Šic Žlabur (član povjerenstva)
• Committee member: Sanja Radman (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Vegetable Crops); Zagreb
• Defense date and country: 2023-09-29, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Microgreens ili mladi izdanci beru se u fazi kotiledona i nepotpuno razvijenih prvih pravih listova 7 do 21 dan nakon sjetve. Smatraju se nutritivno bogatim namirnicama te imaju visok antioksidativni učinak. Cilj rada bio je utvrditi utjecaj tri supstrata (komercijalni supstrat za uzgoj presadnica, mješavina komercijalnog supstrata i kokosovih vlakana, kokosova vlakna) na količinu suhe tvari, ukupnih klorofila i karotenoida, ukupnih fenola, vitamina C i antioksidacijskog kapaciteta mladih izdanaka piskavice (Trigonella foenum-graecum), vlasca (Allium schoenoprasum), korijandra (Coriandrum sativum), dragoljuba (Tropaeolum majus) i bosiljka (Ocimum basilicum). Najveći prinos mladih izdanaka (2,15 kg/m2) ostvaren je na komercijalnom supstratu. Izdanci dragoljuba, piskavice i korijandra izdvajali su se najvećim sadržajem vitamina C. U mladim izdancima korijandra uzgajanim na kokosovim vlaknima utvrđen je najveći sadržaj suhe tvari (22,48 %). Supstrat je utjecao na količinu ukupnih fenola, kojih je bilo najviše u izdancima uzgojenim na kokosovim vlaknima (234,28 mg GAE/100 g svježe mase), a najmanje u izdancima uzgojenim na komercijalnom supstratu (124,33 mg GAE/100 g svježe mase). Mladi izdanci svih testiranih vrsta bilježe visok antioksidacijski kapacitet koji je varirao između 1928,74 i 2494,58 μmol TE/L.

Abstract (english)

Microgreens are harvested at the stage of fully developed cotyledons and incompletely developed first pair of leaves. They are considered as nutrient-rich foods and have high antioxidant capacity. The aim of this study is to determine the effect of three substrates (commercial seedling substrate, a mixture of commercial substrate and coconut fiber, coconut fibers) on dry matter, total chlorophyll and carotenoid content, total phenolics, vitamin C and antioxidant capacity of fenugreek (Trigonella foenum-graecum), chives (Allium schoenoprasum), coriander (Coriandrum sativum), nasturtium (Tropaeolum majus) and basil (Ocimum basilicum) microgreens. The highest yield of microgreens (2.15 kg/m2) was obtained on commercial substrate. The highest vitamin C content was obtained in microgreens of nasturtium, fenugreek and coriander. The highest dry matter content (22.48%) was found in coriander microgreens sown on coconut fiber. The substrate affected the total phenolic content, which was the highest on the coconut fiber substrate (234.28 mg GAE /100 g fresh weight) and lowest on the commercial seedling substrate (124.33 mg GAE /100 g fresh weight). The microgreens of all tested species had high antioxidant capacity, ranging from 1928.74 to 2494.58 μmol TE/L.

• Keywords: supstrat; ukupni fenoli; vitamin C; suha tvar; antioksidacijski kapacitet
• Keywords (english): substrate; total phenolics; vitamin C; dry matter; antioxidant capacity
• Language: croatian
• URN:NBN: urn:nbn:hr:204:859072
• 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: 2023-10-12 08:55:09