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doctoral thesis
Razvoj novoga bioprocesa proizvodnje mliječne kiseline
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. urn:nbn:hr:159:687164
Trontel, Antonija
University of Zagreb
Faculty of Food Technology and Biotechnology

Cite this document

Trontel, A. (2013). Razvoj novoga bioprocesa proizvodnje mliječne kiseline (Doctoral thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:687164

Trontel, Antonija. "Razvoj novoga bioprocesa proizvodnje mliječne kiseline." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:687164

Trontel, Antonija. "Razvoj novoga bioprocesa proizvodnje mliječne kiseline." Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2013. https://urn.nsk.hr/urn:nbn:hr:159:687164

Trontel, A. (2013). 'Razvoj novoga bioprocesa proizvodnje mliječne kiseline', Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 20 April 2024, https://urn.nsk.hr/urn:nbn:hr:159:687164

Trontel A. Razvoj novoga bioprocesa proizvodnje mliječne kiseline [Doctoral thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2013 [cited 2024 April 20] Available at: https://urn.nsk.hr/urn:nbn:hr:159:687164

A. Trontel, "Razvoj novoga bioprocesa proizvodnje mliječne kiseline", Doctoral thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2013. Available at: https://urn.nsk.hr/urn:nbn:hr:159:687164

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Metadata
TitleRazvoj novoga bioprocesa proizvodnje mliječne kiseline
Title (english)Development of novel bioprocess for lactic acid production
AuthorAntonija Trontel
MentorSrđan Novak (mentor)
Committee memberJagoda Šušković (predsjednik povjerenstva)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
Zagreb
Defense date and country2013-05-21, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Universal decimal classification
(UDC)		66 - Chemical technology. Chemical and related industries
Abstract
Razvijen je novi bioproces za proizvodnju D-/L-mliječne kiseline, koji pripada bioprocesima simultane saharifikacije polimernih supstrata iz polučvrste sirovine i fermentacije jednostavnih ugljikohidrata. Ovaj bioproces je proveden s pomoću amilolitičke bakterije mliječne kiseline Lactobacillus amylovorus DSM 20531T u podlogama s visokom početnom koncentracijom škroba ili kukuruzne krupice i to u dva laboratorijska bioreaktora različite konstrukcije. Ovi visoko učinkoviti bioprocesi (YMK/glcNH = 0,85-0,91 g g-1) prikladni su za uvećanje do industrijskog mjerila. Različiti točno definirani omjeri D- i L-mliječne kiseline mogu se proizvesti podešavanjem temperature bioprocesa i korištenjem odabranih (združenih) kultura bakterija mliječne kiseline. Na temelju rezultata opisanih u ovom radu predloženi su mehanizmi regulacije metabolizma kod L. amylovorus DSM 20531T i razvijen je i primijenjen nestrukturirani matematički model, kojim se opisuje novi bioproces za proizvodnju D-/L-mliječne kiseline i predviđaju vrijednosti veličina koje nisu eksperimentalno određene u ovim heterogenim sustavima.
Abstract (english)
New bioprocess for D-/L-lactic acid production was developed. This bioprocess pertains to simultaneous semi solid state saccharification and fermentation type of bioprocesses. Bioprocess was carried out by amylolytic lactic acid bacterium Lactobacillus amylovorus DSM 20531T in medium with high initial concentration of starch or corn grits in two types of lab-scale bioreactors. These highly efficient bioprocesses (YMK/glcNH = 0,85-0,91g g-1) are suitable for scale-up to industrial proportions. Different exactly defined ratios of D- and L-lactic acid can be produced by combining cultivation temperature and selected (mixed) cultures of lactic acid bacteria. Based on results described in this work, metabolic regulatory mechanisms of L. amylovorus DSM 20531T were proposed, and unstructured primary mathematical model was developed and applied. The model describes the new bioprocess for D-/L-lactic acid production and predicts values of parameters which have not been experimentally determined in those heterogeneous systems.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:687164
Promotion2013-09-22
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
RepositoryRepository of the Faculty of Food Technology and Biotechnology
Created on2018-05-17 09:48:06

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