Sökning: "HMF"
Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet HMF.
1. Towards sugar- and lignin-based polyesters and polyurethanes with enhanced properties
Sammanfattning : The enormous production and consumption of fossil-based plastics has caused severe environmental challenges such as pollution of the ocean, increased CO2-emissions, and various health problems. Many ofthese concerns are intimately connected to the use of fossil fuels in the production of polymers. LÄS MER
2. The effect on chromosomal stability of some dietary constituents
Sammanfattning : When food is heated, a vast number of compounds are formed. Some of these are known to be toxic. Among these are furan, HMF, PhIP, IQ, and MeIQx, the subjects of this thesis. All these compounds are known or suspected carcinogens but the detailed mechanisms behind their carcinogenicity have not yet been fully examined. LÄS MER
3. Ethanol from Lignocellulose: Physiological Effects of Inhibitors and Fermentation Strategies
Sammanfattning : Fermentative ethanol production from dilute-acid hydrolyzates of wood using the yeast Saccharomyces cerevisiae was investigated. Of known inhibitors in hydrolyzates, acetic acid, furfural and hydroxymethyl furfural (HMF) were found in the highest concentrations (up to about 10 g/l). LÄS MER
4. Efficient Conversion of Lignocellulose Hydrolysates- Yeast Tolerance and Redox Metabolism
Sammanfattning : The fermentation of lignocellulose hydrolysates by Saccharomyces cerevisiae for ethanol production was investigated. An important problem for the successful conversion of these hydrolysates is that they often are inhibitory. LÄS MER
5. Towards More Robust Saccharomyces cerevisiae Strains for Lignocellulosic Bioethanol Production: Lessons from process concepts and physiological investigations
Sammanfattning : Dwindling oil reserves and the negative impacts of fossil fuels on the environment call for more sustainable energy sources. First-generation bioethanol produced from sugar cane and corn has met some of these needs, but it competes with the food supply for raw materials. LÄS MER