Utjecaj jestivih omotača na pojavu sive plijesni Botrytis cinerea tijekom skladištenja plodova mandarine

master's thesis

• Title (english): The impact of edible coatings on the occurrence of gray mold botrytis cinerea during the storage of mandarin fruits
• Author: Iva Kulaš
• Mentor: Luna Maslov Bandić (mentor)
• Committee member: Luna Maslov Bandić (predsjednik povjerenstva)
• Committee member: Mirna Mrkonjić Fuka (član povjerenstva)
• Committee member: Goran Fruk (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Chemistry); Zagreb
• Defense date and country: 2024-09-30, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Više od 40% voća i povrća ubranog diljem svijeta propadne. Veliki postotak tog gubitka
povezan je s gljivičnim patogenima koji uzrokuju truljenje nakon berbe, poput Botrytis cinerea.
Rješenje ovog problema komplicirano je zbog ograničenja fungicida dostupnih za kontrolu
rasta tog gljivičnog patogena i nameće potrebu za ekološki prihvatljivim alternativama.
Primjenom jestivih omotača na voće prije skladištenja može se na ekološki prihvatljiv način
spriječiti propadanje svježih proizvoda nakon berbe. Jestivi omotači imaju značajnu ulogu u
smanjenju gubitaka poslije berbe kao što su gubitak vlage, sazrijevanje i fizikalno-kemijski
gubici. U ovom radu ispitan je utjecaj tri vrste jestivih omotača (kitozan, zein i kombinacija
'sloj po sloj' kitozana i zeina) na pojavu sive plijesni Botrytis cinerea na plodovima mandarine
tijekom skladištenja. Plodovi mandarine tretirani kitozanom pružaju najveću zaštitu na širenje
infekcije sive plijesni u odnosu na tretman zeinom i otopinom kitozan-zeina. Tretman otopinom
kitozan-zeina pokazao je stabilizaciju i porast TSS uz kontroliran pad TA, što se pokazalo kao
najbolja kombinacija za očuvanje kvalitete mandarina tijekom dužeg skladištenja.

Abstract (english)

More than 40% of fruits and vegetables harvested worldwide fail. A large percentage of this loss is
associated with fungal pathogens that cause rotting after harvest, like Botrytis cinerea. The solution
to this problem is complicated due to the limitations of fungicides available to control the growth
of this fungal pathogen and imposes the need for environmentally friendly alternatives. Applying
edible coatings to fruits before storage can prevent the deterioration of fresh products after harvest
in an environmentally friendly way. Edible coatings play a significant role in reducing post-harvest
losses such as moisture loss, maturation and physicochemical losses. In this paper, the influence of
three types of edible coatings (chitosan, zein and combination of chitosan and zein) on the
appearance of gray mold Botrytis cinerea on mandarin fruits during storage was examined.
Mandarin fruits treated with chitosan provide the highest resistance to the spread of gray mold
infection compared to treatment with zein and chitosan-zein solution. The treatment with chitosanzein
solution showed stabilization and an increase in TSS with a controlled decrease in TA, which
proved to best combination for preserving the quality of mandarins during longer storage.

• Keywords: mandarine; jestivi omotači; kitozan; zein; Botrytis cinerea; skladištenje
• Keywords (english): mandarins; edible coatings; chitosan; zein; Botrytis cinerea; storage
• Language: croatian
• URN:NBN: urn:nbn:hr:204:618932
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologije (magistar/ magistra inženjer/inženjerka agroekologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-11-06 07:49:32