Search for dissertations about: "sugar production"

Showing result 1 - 5 of 140 swedish dissertations containing the words sugar production.

2. 1. Sustainability of the Swedish Sugar Sector : Assessment Tool Development and Case Study Appraisal

   Author : Barry Ness; LUCSUS; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; integrated assessment; DPSIR; scale; sugar beet; sugar; Sustainability science; sustainability assessment; proximity analysis; Scania; Sweden;

   Abstract : This thesis contributes to the development of tools and methods for assessing sustainability and applies them to an assessment of the Swedish sugar production system. The thesis’ aims are to compile an overview of the existing approaches for assessing sustainability, to suggest a method(s) for structuring and analyzing complex sustainability issues, and to appraise sustainability impacts from Swedish sugar production. READ MORE

4. 2. Aroma and Flavor in Liquid Beet Sugar Processing

   Author : Per Pihlsgård; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; liquid beet sugar; aroma release; liquid beet sugar process; electronic nose; aroma; sensory analysis; macromolecules; flavor; GC-MS; GC-olfactometry;

   Abstract : Production of liquid beet sugar, a product of increasing importance for the food industry, involves many different compounds exhibiting aroma. Aroma compounds are introduced with the raw material, the sugar beets, but also formed as a result of sugar degradation (caramelization and Maillard reaction) or by contamination from process steps, such as adsorbents and ion exchangers. READ MORE

5. 3. Bioethanol Production: Pretreatment and Enzymatic Hydrolysis of Softwood

   Author : Charlotte Tengborg; Avdelningen för kemiteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; recirculation of process streams; detoxification; inhibition; hydrolysis conditions; enzymatic hydrolysis; Ethanol production; steam pretreatment; softwood; Carbochemistry; petrochemistry; fuels and explosives technology; Petrokemi; bränslen; sprängämnen;

   Abstract : The enzymatic hydrolysis process can be used to produce bioethanol from softwood, which are the dominating raw material in the Northern hemisphere. This thesis deals with the development of the process focusing on the pretreatment and the enzymatic hydrolysis stages. READ MORE

6. 4. Effects of high sugar concentrations in production scale bioreactor : a scale-down study of s. cervisiae

   Author : Stefan George; KTH; []
   Keywords : ;

   Abstract : Substrate concentration gradients exist in large-scalebioreactors, due to a combination of insufficient mass transferand mixing, and microbial activities. Zones with high substrateconcentration may arise close to a feed point. It is largelyunknown to what extent these gradients influence themicroorganisms and what the microbial response might be. READ MORE

7. 5. Engineering Saccharomyces cerevisiae for mixed-sugar fermentation

   Author : Rosa Garcia Sanchez; Teknisk mikrobiologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; metabolic engineering; evolutionary engineering; promoter; mixed-sugar utilization; galactose; arabinose; xylose; Saccharomyces cerevisiae; fermentation; ethanol; phosphoglucomutase;

   Abstract : Efficient fermentation of all the monomeric sugars derived from lignocellulose is crucial to increase the economy of bioethanol production, since they can account for a considerable fraction of the fermentable sugars in the raw material. This thesis describes the engineering of Saccharomyces cerevisiae strains for improved xylose, galactose and/or arabinose utilization. READ MORE