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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

Institutional repository: Repository of the Faculty of Food Technology and Biotechnology

Cite this document

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

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

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

Strelec, I. (2007). 'Kemijske i biokemijske promjene starenja zrna pšenice', Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 22 November 2024, https://urn.nsk.hr/urn:nbn:hr:159:527746

Strelec I. Kemijske i biokemijske promjene starenja zrna pšenice [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2007 [cited 2024 November 22] Available at: https://urn.nsk.hr/urn:nbn:hr:159:527746

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

Metadata
TitleKemijske i biokemijske promjene starenja zrna pšenice
Title (english)Chemical and biochemical changes during wheat seeds ageing
AuthorIvica Strelec
MBZ: 233194
MentorŽaneta Ugarčić-Hardi (mentor)
MBZ: 126592
Committee memberVladimir Mrša (predsjednik povjerenstva)
MBZ: 39525
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
Zagreb
Defense date and country2007-11-15, 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)
Languagecroatian
URN:NBNurn:nbn:hr:159:527746
Promotion2008-09-28
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsAccess restricted to students and staff of home institution
Terms of useLicence In copyright icon
Created on2018-05-11 12:25:41