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undergraduate thesis
Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru
Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. urn:nbn:hr:159:346792
Ilić, Mario
University of Zagreb
Faculty of Food Technology and Biotechnology
Department of Biochemical Engineering
Laboratory for Biochemical Engineering, Industrial Microbiology and Malting and Brewing Technology

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

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Ilić, M. (2019). Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru (Undergraduate thesis). Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology. Retrieved from https://urn.nsk.hr/urn:nbn:hr:159:346792

Ilić, Mario. "Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:346792

Ilić, Mario. "Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru." Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, 2019. https://urn.nsk.hr/urn:nbn:hr:159:346792

Ilić, M. (2019). 'Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru', Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, accessed 02 January 2025, https://urn.nsk.hr/urn:nbn:hr:159:346792

Ilić M. Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru [Undergraduate thesis]. Zagreb: University of Zagreb, Faculty of Food Technology and Biotechnology; 2019 [cited 2025 January 02] Available at: https://urn.nsk.hr/urn:nbn:hr:159:346792

M. Ilić, "Predobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru", Undergraduate thesis, University of Zagreb, Faculty of Food Technology and Biotechnology, Zagreb, 2019. Available at: https://urn.nsk.hr/urn:nbn:hr:159:346792

Metadata
TitlePredobrada čipsa bukve razrijeđenom sumpornom kiselinom u visokotlačnom reaktoru
Title (english)Mild-sulfuric acid pretreatment of beech chips in high-pressure reactor
AuthorMario Ilić
MentorVlatka Petravić Tominac (mentor)
GranterUniversity of Zagreb
Faculty of Food Technology and Biotechnology
(Department of Biochemical Engineering)
(Laboratory for Biochemical Engineering, Industrial Microbiology and Malting and Brewing Technology)
Zagreb
Defense date and country2019-09-18, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Biotechnology
Abstract
Otpad nastao preradom bukve jedna je od lignoceluloznih sirovina na kojima se može temeljiti razvoj budućih biotehnoloških procesa. Provedena je predobrada čipsa bukve sumpornom kiselinom (0,5% w/v) u visokotlačnom reaktoru pri različitim temperaturama (160°C, 180°C i 200°C) i vremenima zadržavanja (5, 10, 15 i 20 minuta). Hidrolizat dobiven pri optimalnim uvjetima (180°C/10 minuta) sadržavao je ksilozu s primjesama manoze i galaktoze (10,88 g/L), glukozu (2,16 g/L), arabinozu (0,49 g/L), mravlju kiselinu (0,14 g/L), octenu kiselinu (2,51 g/L) i furane (255,61 mg/L), dok levulinska kiselina pri ovim uvjetima nije detektirana. Koncentracije mravlje, octene, levulinske kiseline, furana i lignina topljivog u kiselini rasle su s povećanjem intenziteta predobrade, tj. povećanjem temperature i produženjem vremena zadržavanja.
Abstract (english)
Waste generated by beech wood processing is one of the lignocellulosic raw materials that can be used in the development of future biotechnological processes. Pretreatment of beech chips with 0,5 % sulfuric acid in high-pressure reactor was performed at different temperatures (160°C, 180°C and 200°C) and residence times (5, 10, 15 and 20 minutes). The hydrolyzate obtained at optimal pretreatment conditions (180°C/10min) contained xylose (10,88 g/L), glucose (2,16 g/L), arabinose (0,49 g/L), formic acid (0,14 g/L), acetic acid (2,51 g/L) and furans (255,61 mg/L), while levulinic acid was not present. Concentrations of formic acid, acetic acid, levulinic acid, furan and acid-soluble lignin are higher at more intense pretreatment conditions, i.e. at higher temperatures and longer residence times.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:159:346792
Study programmeTitle: Biotechnology
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka biotehnologije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2019-10-03 09:59:11