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Title:Izolacija encimov in proteinov iz celic črne kvasovke Wallemia Ichthyophaga z uporabo mehanskega postopka : diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje
Authors:ID Kresnik, Marko (Author)
ID Leitgeb, Maja (Mentor) More about this mentor... New window
ID Čolnik, Maja (Comentor)
Files:.pdf VS_Kresnik_Marko_2025.pdf (2,00 MB)
MD5: 7CAAE942080E439C68209F1FEABA8218
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V svetu s hitro naraščajočo populacijo, onesnaženostjo in z izčrpanjem številnih naravnih virov, encimska tehnologija ponuja velik potencial za številne industrijske aplikacije. Nekatera področja, kjer se uporablja encimska tehnologija, so prehrambena industrija (encimi se uporabljajo za izboljšanje proizvodnje hrane, na primer pri predelavi žit, proizvodnji sladkorja, sira, sokov..), farmacevtska industrija (encimi se uporabljajo v sintezi zdravil, proizvodnji antibiotikov in pripravi cepiv), tekstilna industrija, proizvodnja biogoriv, kozmetična industrija in še druge panoge. Mikrobni encimi lahko na ekonomičen in okolju prijazen način delujejo kot biokatalizatorji za izvajanje reakcij v bioprocesih. Vsak živ organizem vsebuje biološko aktivne snovi, ki jih je mogoče ekstrahirati. Mikrobne celice proizvajajo intracelularne in ekstracelularne encime. Za sprostitev intracelularnih komponent iz celice je potrebno celično steno mikrobov razbiti. Za to smo uporabili postopek mehanske homogenizacije. Postopek homogeniziranja se običajno izvaja s pomočjo homogenizacijskih naprav, ki lahko delujejo s hidravličnim tlakom, ultrazvokom, visokim tlakom ali drugimi mehanskimi silami. V našem primeru bomo uporabili rotor-stator homogenizator, kjer vzorec potuje skozi ozek prostor med vrtečim rotorjem in statorjem, kar povzroči razbijanje delcev in razlitje celic v celično suspenzijo. Namen te diplomske naloge je bil ugotoviti kako čas homogenizacije vpliva na preživelost črnih kvasovk W.Ichthyophaga v celični suspenziji, preostalo aktivnost encimov (amilaza, β- glukozidaza, proteaza, celulaza) in preostalo koncentracijo proteinov. Celično suspenzijo smo homogenizirali v času od 0 – 90 min pri konstantni temperaturi 35 ºC. Rezultati so pokazali, da je preživelost W.Ichthyophaga s podaljševanjem časa homogenizacije upadala, preostala koncentracija proteinov pa je naraščala. Zaznali smo povečanje preostale aktivnosti encimov α-amilaze, celulaze in proteaze. Na preostalo aktivnost β-glukozidaze pa je imela homogenizacija negativen vpliv, saj smo dokazali takojšen upad preostale aktivnosti.
Keywords:W.Ichthyophaga, črne glive, homogenizacija, encimi, proteini.
Publication status:Published
Publication version:Version of Record
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[M. Kresnik]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (X, 39str.))
PID:20.500.12556/DKUM-92254 New window
UDC:602.4:577.15(043.2)
COBISS.SI-ID:236114435 New window
Publication date in DKUM:06.05.2025
Views:268
Downloads:48
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:25.03.2025

Secondary language

Language:English
Title:Isolation of enzymes and proteins from the black yeast Wallemia Ichthyophaga cells using a mechanical process
Abstract:In a world with a rapidly growing population, pollution, and the depletion of many natural resources, enzyme technology offers great potential for various industrial applications. Some areas where enzyme technology is used include, the food industry (enzymes are used to improve food production, such as in grain processing, sugar production, cheese making, and juice production), the pharmaceutical industry (enzymes are used in drug synthesis, antibiotic production, and vaccine preparation), the textile industry, biofuel production, the cosmetics industry, and other sectors. Microbial enzymes can act as biocatalysts in bioprocesses in an economical and environmentally friendly way. Every living organism contains biologically active substances that can be extracted. Microbial cells produce intracellular and extracellular enzymes. To release intracellular components from the cell, the microbial cell wall needs to be broken. For this, we used a mechanical homogenization process. The homogenization process is usually carried out using homogenization devices that operate with hydraulic pressure, ultrasound, high pressure, or other mechanical forces. In our case, we used a rotor-stator homogenizer, where the sample travels through a narrow space between the rotating rotor and the stator, causing particle breakdown and cell disruption into a cell suspension. The purpose of this thesis was to determine how homogenization time affects the survival of black yeasts W. Ichthyophaga in the cell suspension, the residual enzyme activity (amylase, β-glucosidase, protease, cellulase), and the residual protein concentration. The cell suspension was homogenized for a duration of 0–90 minutes at a constant temperature of 35°C. The results showed that the survival rate of W. Ichthyophaga decreased with longer homogenization times, while the residual protein concentration increased. We observed an increase in the residual activity of the enzymes α-amylase, cellulase, and protease. However, homogenization had a negative impact on the residual activity of β-glucosidase, as we demonstrated an immediate decrease in residual activity.
Keywords:W.Ichthyophaga, black fungus, homogenization, enzymes, proteins.


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