Kemijske i biokemijske promjene starenja zrna pšenice

Strelec, Ivica

prikaz prve stranice dokumenta Kemijske i biokemijske promjene starenja zrna pšenice

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doctoral thesis

Kemijske i biokemijske promjene starenja zrna pšenice

Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2007. urn:nbn:hr:159:527746

Strelec, Ivica

University of Zagreb
Faculty of Food Technology and Biotechnology

Cite this document

APA 6th Edition

Strelec, I. (2007). Kemijske i biokemijske promjene starenja zrna pšenice (Doctoral thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:527746

MLA 8th Edition

Strelec, Ivica. "Kemijske i biokemijske promjene starenja zrna pšenice." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2007. https://urn.nsk.hr/urn:nbn:hr:159:527746

Chicago 17th Edition

Harvard

Strelec, I. (2007). 'Kemijske i biokemijske promjene starenja zrna pšenice', Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 06 February 2023, https://urn.nsk.hr/urn:nbn:hr:159:527746

Vancouver

Strelec I. Kemijske i biokemijske promjene starenja zrna pšenice [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2007 [cited 2023 February 06] Available at: https://urn.nsk.hr/urn:nbn:hr:159:527746

IEEE

I. Strelec, "Kemijske i biokemijske promjene starenja zrna pšenice", Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2007. Available at: https://urn.nsk.hr/urn:nbn:hr:159:527746

Cite this item: https://urn.nsk.hr/urn:nbn:hr:159:527746

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Metadata

Title	Kemijske i biokemijske promjene starenja zrna pšenice
Title (english)	Chemical and biochemical changes during wheat seeds ageing
Author	Ivica Strelec MBZ: 233194
Mentor	Žaneta Ugarčić-Hardi (mentor) MBZ: 126592
Committee member	Vladimir Mrša (predsjednik povjerenstva) MBZ: 39525
Granter	University of Zagreb Faculty of Food Technology and Biotechnology Zagreb
Defense date and country	2007-11-15, Croatia
Scientific / art field, discipline and subdiscipline	BIOTECHNICAL SCIENCES Interdisciplinary Technical Sciences
Universal decimal classification (UDC)	60 - Biotechnology. Genetic engineering. Products of cloning
Abstract	Proučavanje kemijskih i biokemijskih promjena koje se dešavaju u zrnu pšenica tijekom 360 dana starenja pri različitim uvjetima pokazuje da starenjem zrna dolazi do peroksidacije lipida, neenzimske glikozilacije proteina, te sniženja aktivnosti proteolitičkih i oksidoreduktivnih enzima, što se odražava na sniženje klijavosti zrna i promjenu pokazatelja tehnološke kakvoće zrna i produkata njegove meljave. Brzine i intenziteti promjena pokazuju se ovisni o primjenjenim uvjetima što upućuje na postojanje barem dva različita mehanizma starenja zrna. Gvajacilna peroksidaza i broj padanja ističu se kao potencijalni biljezi kratkotrajne starosti zrna. Analizom zrna pšenice zaraženih žitnim žiškom ustanovljeno je da kao potencijalni biljezi zaraze zrna mogu poslužiti hektolitarska masa zrna, stupanj kiselosti brašna, te aktivnosti karboksipeptidaze II, katalaze i polifenol oksidaze.
Abstract (english)	Occurrence of chemical and biochemical changes during wheat seeds ageing under different storage conditions were studied. It was shown that wheat seed ageing was accompanied by lipid peroxidation, non-enzymatic glycosylation, oxidoreductase and peptidase activity loss. Combined effect of these changes caused lower seed viability (germination) as well as wheat seeds and flour quality parameters changes. Velocities and intensities of all observed changes were highly dependent on applied ageing conditions, which indicated the existence of at least two different ageing mechanisms. Potential markers for prediction of short-term wheat seed age could be guaiacol peroxidase and falling number. Analysis of wheat seeds infected by granary weevil indicated hectolitre mass, flour acidity as well as carboxypeptidase II, catalase and polyphenol oxidase as potential markers of seed infestation.
Keywords
Keywords (english)
Language	croatian
URN:NBN	urn:nbn:hr:159:527746
Promotion	2008-09-28
Study programme	Title: Postgraduate PhD Study in Biotechnology and Bioprocess Engineering Study programme type: university Study level: postgraduate Academic / professional title: doktor/doktorica znanosti (doktor/doktorica znanosti)
Type of resource	Text
File origin	Born digital
Access conditions	Access restricted to students and staff of home institution
Terms of use
Repository	Repository of the Faculty of Food Technology and Biotechnology
Created on	2018-05-11 12:25:41