Sökning: "starch hydrolysate"

Hittade 5 avhandlingar innehållade orden starch hydrolysate.

1. 1. Fermentation of wheat starch hydrolysate by Lactococcus lactis: Factors affecting product formation

   Författare :Karin Hofvendahl; Teknisk mikrobiologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nutrients; temperature; pH; optical isomers; maltose; wheat; starch hydrolysate; Lactococcus lactis; lactic acid; SSF; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi;

   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

3. 2. Development of integrated cellulose- and starch-based ethanol production and process design for improved xylose conversion

   Författare :Borbala Erdei; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bioethanol; wheat straw; wheat; first-generation ethanol; second-generation; integrated process; SSF; simultaneous saccharification and co-fermentation; xylose fermentation; S. cerevisiae TMB3400;

   Sammanfattning : Transportation fuels from renewable resources such as ethanol are one of the alternatives to ensure energy security and decrease the net emission of carbon dioxide. First-generation ethanol production from sugar- and starch-based raw materials (1G) is today well established in many countries, and the focus of research has thus shifted to the development and demonstration of the production of second-generation bioethanol from lignocellulose (2G). LÄS MER

4. 3. An alkaline active maltooligosaccharide forming alpha-amylase from Bacillus halodurans

   Författare :Suhaila Hashim; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biokemisk teknik; Biochemical technology; differential scanning calorimetry; soda lakes; Bacillus halodurans; alkaliphile; á-amylase;

   Sammanfattning : The East African Rift Valley contains a number of soda lakes, which represent some of the most stable, naturally occurring alkaline environments on earth. Alkaliphilic microorganisms found in these habitats have attracted a great interest due to their ability to produce extracellular enzymes that are active and stable at high pH values for industrial applications. LÄS MER

5. 4. Novel Moderate Halophiles: Application of Halomonas boliviensis in Biopolyester Production

   Författare :Jorge Quillaguaman; Bioteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biotechnology; biopolymers; Polymer technology; poly b-hydroxybutyrate accumulation; moderate halophile; Halomonas boliviensis; Chromohalobacter sarecencis; Polymerteknik; Bioteknik;

   Sammanfattning : The south-west Andean region of Bolivia has vast landscapes comprising salt deserts and dry lands interspersed with a number of saline lakes. Much of this region lies above 4000 m above sea level that allows the survival of limited and unique flora and fauna. LÄS MER

7. 5. Process Development of Bioethanol Production from Wheat and Barley Residues Steam Pretreatment and SSF

   Författare :Marie Linde; Avdelningen för kemiteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbochemistry; Kemiteknik och kemisk teknologi; Chemical technology and engineering; metabolism; Biokemi; Metabolism; Biochemistry; Barley straw; Wheat straw; DDGS; Fermentation; SSF; Enzymatic hydrolysis; H2SO4; Ethanol production; Steam pretreatment; petrochemistry; fuels and explosives technology; Petrokemi; bränslen; sprängämnen; Wood; pulp and paper technology; Pappers- och massateknik; Biotechnology; Bioteknik;

   Sammanfattning : Bioethanol has received increasing attention as an alternative to petrol due to the current dependency on supplies from other countries and due to the increased concentration of the greenhouse gas carbon dioxide in the atmosphere. In this thesis, the development of 2nd generation production processes for bioethanol production from the lignocellulosic part of biomass is discussed. LÄS MER