Search for dissertations about: "organic foods"

Showing result 1 - 5 of 19 swedish dissertations containing the words organic foods.

2. 1. Consumer Perception of Organic and Genetically Modified Foods : Health and Environmental Considerations

   Author : Maria Magnusson; Per-Olow Sjödén; Ulla-Kaisa Koivisto Hursti; Liisa Lähteenmäki; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Caring sciences; consumer perceptions; organic foods; genetically modified foods; food choice; health; environmental concern; Vårdvetenskap; Caring sciences; Vårdvetenskap;

   Abstract : The aim was to study consumer attitudes to and perceptions of organic and genetically modified (GM) foods and factors influencing the purchase/non purchase of these two types of foods. Data were collected by two questionnaire surveys (random nation-wide samples of 2000 consumers, response rate 58% and 39% respectively) and one interview study (n=40). READ MORE

4. 2. Microbial Production of Bio-Based Chemicals: A Biorefinery Perspective

   Author : Tarek Dishisha; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biorefinery; platform chemical; organic acid; propionic acid; 3-hydroxypropionic acid; 3-hydroxypropionaldehyde; methacrylic acid; 1; 3-propanediol; Propionibacterium acidipropionici; Lactobacillus reuteri; Gluconobacter oxydans; high cell density fermentation; biotransformation; product inhibition; cell recycle; immobilized cells; chemical catalysis; pdu operon;

   Abstract : A shift from fossil- to renewable biomass feedstock for the emerging bio-based economy requires the development and adoption of new sustainable technologies that are more suited for transformation of biomass components to chemicals, materials and energy. This thesis presents investigations on the development of processes based on industrial biotechnology as a key element for the production of chemicals from agro-/industrial by-products. READ MORE

5. 3. Determination of Fat-Soluble Vitamins in Foods Based on Supercritical Fluid Extraction

   Author : Charlotta Turner; Kemiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supercritical fluid extraction; Solvent collection; Solid phase trapping; SFE; Selectivity; Retinol; Milk powder; Lipase; Food; Enzymatic hydrolysis; Alcoholysis; Candida antarctica; Tocopherol; Vitamins; Analytical chemistry; Analytisk kemi;

   Abstract : Sample clean-up methodologies based on supercritical fluid extraction (SFE) have been developed for determination of fat-soluble vitamins in foods. This thesis focuses on method development, stressing important issues concerning sample pre-treatment, extraction conditions and collection parameters. READ MORE

6. 4. NMR studies of metabolites and xenobiotics : From time-points to long-term metabolic regulation

   Author : Ina Ehlers; Jürgen Schleucher; Farquhar Graham; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NMR spectroscopy; isotopomer; phospholipid; persistent organic pollutant; CO2 fertilization; photorespiration;

   Abstract : Chemical species carry information in two dimensions, in their concentrations and their isotopic signatures. The concentrations of metabolites or synthetic compounds describe the composition of a chemical or biological system, while isotopic signatures describe processes in the system by their reaction pathways, regulation, and responses to external stimuli. READ MORE

7. 5. Nitric oxide in cardiovascular and renal disease : role of organic nitrates, inorganic nitrate and red blood cells

   Author : Zhengbing Zhuge; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : RATIONALE: Cardiovascular and renal disorders are major health problems, which are often co-existing. Mechanistically, these conditions can be attributed to endothelial dysfunction, a process coupled with reduced nitric oxide (NO) bioavailability. READ MORE