Proizvodnja bioetanola iz kukuruzne krupice

master's thesis

• Title (english): Production of bioethanol from corn semolina
• Author: Sandra Mićić
• Mentor: Slobodan Grba (mentor)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for Fermentation and Yeast Technology); Zagreb
• Defense date and country: 2007-11-15, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Biotechnology

Abstract

Problem visoke cijene i nedostatak benzina je aktualan kako u svijetu tako i u Republici Hrvatskoj. Cilj ovog rada je bila provjera mogućnosti proizvodnje bioetanola iz ošećerene pivarske kukuruzne krupice (K1) i kukuruzne krupice kukuruza iz Slavonije (K2) uz pomoć kvasca Saccharomyces cerevisiae. Iz pivarske kukuruzne krupice (K1) koncentracije 250 g/L s 78 % škroba u suhoj tvari kukuruzne krupice moguće je dobiti 12 % vol/vol etanola tijekom 50 h fermentacije sa dodatkom 5 g/L s.tv. pekarskog kvasca. Iz kukuruzne krupice dobivene mljevenjem smjese kukuruza (K2) koncentracije 250 g/L s 68 % škroba u suhoj tvari kukuruzne krupice moguće je dobiti 9 % vol/vol etanola tijekom 22 h fermentacije sa dodatkom 5 g/L s.tv. pekarskog kvasca. Normativ za prozvodnju etanola iz kukuruzne krupice K1 je 2.1 kg kukuruzne krupice za 1 L etanola, dok je normativ za prozvodnju etanola iz kukuruzne krupice K2 2.8 kg kukuruzne krupice za 1 L proizvedenog etanola.

Abstract (english)

The problem of high prices and shortage of gasoline is actual around the world and also in Croatia. Aim of this paper was checking out possibility of production bioethanol from saccharificated, brewery corn semolina (K1) and corn semolina from corn grown in Slavonia (K2) by yeast Saccharomyces cerevisiae. From corn starch hydrolysate (K1), concentration 250 g/L, with 78 % of starch in d.w of corn semolina it is possible to produce 12 % vol/vol of ethanol during 50 hours of fermentation with addition of 5 g/L d.w. baker yeast. From corn starch hydrolysate (K2), concentration 250 g/L, with 68 % of starch in d.w of corn semolina it is possible to produce 9 % vol/vol of ethanol during 22 hours of fermentation with addition of 5 g/L d.w. baker yeast. Standard for production of ethanol from corn semolina K1 is 2.1 kg corn semolina for 1 L of ethanol, while standard for production of ethanol from corn semolina K2 is 2.8 kg corn semolina for 1 L of produced ethanol.

• Keywords: bioetanol; kukuruzna krupica; Saccharomyces cerevisiae
• Keywords (english): bioethanol; corn semolina; Saccharomyces cerevisiae
• Language: croatian
• URN:NBN: urn:nbn:hr:159:484454
• Study programme: Title: Biotechnology; specializations in: Biochemical-Microbiology; Course: Biochemical-Microbiology; Study programme type: university; Study level: graduate; Academic / professional title: diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki (diplomirani inženjer biotehnologije; smjer biokemijsko-mikrobiološki)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-09-05 12:27:22