magistrsko delo
Tanja Kobal (Author), Marjana Regvar (Reviewer), Katarina Vogel-Mikuš (Mentor)

Abstract

Glive predstavljajo velik izziv v agroživilskih sistemih, saj lahko povzročijo bolezni pri rastlinah in s tem zmanjšajo pridelek, kvarijo živila in lahko vplivajo na kakovost končnega izdelka, nekatere izmed njih pa proizvajajo tudi mikotoksine, ki so lahko škodljivi za ljudi in živali. V zadnjem času se raziskave uporabe tehnologije hladne plinske plazme osredotočajo tudi na področje dekontaminacije mikroorganizmov s semen in drugih živil, saj ta predstavlja okolju bolj prijazno alternativo kemijski obdelavi hrane. V tej raziskavi smo testirali uspešnost dekontaminacije gliv Alternaria alternata, Aspergillus flavus, Aspergillus niger, Cladosporium cladosporioides, Epicoccum nigrum, Fusarium graminearum, Fusarium fujikuroi, Fusarium oxysporum in Fusarium proliferatum z nizkotlačno hladno plinsko plazmo (NHPP) z umetno okuženih semen navadne ajde. Pri vseh glivah je bila z daljšanjem časa obdelave z NHPP uspešno znižana stopnja okuženih semen. Po daljši obdelavi semen z NHPP (120 s in več) je bila dosežena popolna dekontaminacija gliv Alternaria alternata, Aspergillus flavus, Aspergillus niger, Cladosporium cladosporioides in Fusarium graminearum. Glive iz rodu Fusarium so bile manj občutljive na obdelavo z NHPP, kar je verjetno povezano s strukturo spor. Po daljši obdelavi z NHPP kali zelo malo semen, zato je dolga obdelava semen z NHPP primerna za shranjevanje in uporabo v prehrani, ne pa tudi za setev.

Keywords

nizkotlačna hladna plinska plazma;dekontaminacija;glive;protiglivna sredstva;navadna ajda;kolonizacija semen;varna hrana;trajnostne tehnologije;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL BF - Biotechnical Faculty
Publisher: [T. Kobal]
UDC: 633.12:52-726(043.2)
COBISS: 162357763 Link will open in a new window
Views: 62
Downloads: 28
Average score: 0 (0 votes)
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Other data

Secondary language: English
Secondary title: Decontamination of selected fungal species from common buckwheat seeds with low-pressure cold gas plasma
Secondary abstract: Fungi represent a major challenge in agro-food systems, as they can cause diseases in plants and food spoilage that can affect the quality of the final product. Some fungi also produce mycotoxins, which cause diseases in people and livestock. Recently, the use of cold plasma technology has also been focused on the area of decontamination of microorganisms from seeds and other food material. Plasma treatment is a more environmentally friendly alternative to chemical food processing. In this research, the effectiveness of the decontamination of the fungi Alternaria alternata, Aspergillus flavus, Aspergillus niger, Cladosporium cladosporioides, Epicoccum nigrum, Fusarium graminearum, Fusarium fujikuroi, Fusarium oxysporum and Fusarium proliferatum from the surface of artificially infected buckwheat seeds with low-pressure cold gas plasma (LPCP) was examined. With increasing exposure to LPCP the infection rate of seeds was successfully reduced. After more prolonged exposure of seeds to LPCP (120 s and more), complete decontamination was attained for the fungi Alternaria alternata, Aspergillus flavus, Aspergillus niger, Cladosporium cladosporioides and Fusarium graminearum. Other selected fungi from Fusarium genus were generally less susceptible to LPCP treatment, which could be related to the structure of their spores. After prolonged exposure of seeds to LPCP the germination was almost ceased. Thus, longer exposure to LPCP is suitable for seeds intended for storage and food use, but not for further sowing.
Secondary keywords: low-pressure cold gas plasma;decontamination;fungi;antifungal agents;common buckwheat;seed colonization;food safety;sustainable technologies;
Type (COBISS): Master's thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Biotehniška fak., Oddelek za biologijo, Magistrsko delo magistrskega študijskega programa 2. stopnje Ekologija in biodiverziteta
Pages: 1 spletni vir (1 datoteka PDF (X, 46 str.))
ID: 19849258