Sökning: "Teknisk mikrobiologi"
Visar resultat 21 - 25 av 81 avhandlingar innehållade orden Teknisk mikrobiologi.
21. Beta-glucose 1-phosphate interconverting enzymes in Lactococcus lactis: physiological role and regulation in maltose, trehalose and glucose metabolism
Sammanfattning : Lactic acid bacteria (LAB), including Lactococcus lactis, are abundant in nature. These bacteria convert carbohydrates into mainly lactate by a rather uncomplicated metabolism. An improved understanding of the physiological and genetical mechanisms involved in carbohydrate metabolism and its regulation will improve the industrial use of LAB. LÄS MER
22. Laccases and Oxalate-Degrading Enzymes Heterologous Expression and Novel Applications in Lignocellulose Processing
Sammanfattning : Lignocellulose constitutes a vast renewable resource for the production of, for example, paper and bioethanol. The potential of using laccase and oxalate-degrading enzymes in novel applications for the processing of lignocellulose was investigated in this work. LÄS MER
23. Genetic Engineering of Industrial Micro-organisms - Casein hydrolysis by the lactic acid bacteria Lactococcus lactis subsp. cremoris and Lactobacillus rhamnosus and Xylose fermentation by the yeast Saccharomyces cerevisiae
Sammanfattning : Micro-organisms are used industrially by humans, to improve production, either qualitatively or quantitatively, and to enhance profit or value. In cheese production, the starter bacteria hydrolyse casein degradation products generated by rennet. LÄS MER
24. Ethanol production by recombinant and natural xylose-utilising yeasts
Sammanfattning : The xylose-fermenting capacity of recombinant Saccharomyces cerevisiae carrying XYL1 and XYL2 from Pichia stipitis, which encode xylose reductase (XR) and xylitol dehydrogenase (XDH), respectively, is poor due to high xylitol formation. Whereas, P. LÄS MER
25. Fermentation of wheat starch hydrolysate by Lactococcus lactis: Factors affecting product formation
Sammanfattning : Lactic acid exists as two optical isomers, D- and L-lactic acid. For the production of biodegradable poly-lactic acid an optically pure product is desirable, but a racemate of known and constant ratio can also be used. Lactic acid can be produced either synthetically or fermentatively. LÄS MER