Search for dissertations about: "Poly 3-hydroxybutyrate"

Showing result 1 - 5 of 12 swedish dissertations containing the words Poly 3-hydroxybutyrate.

  2. 1. Production of poly(3-hydroxybutyrate) and ectoines using a halophilic bacterium

    Author : Thuoc Doan Van; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fermentation; Ectoine; halophilic bacterium; Poly 3-hydroxybutyrate ;

    Abstract : Halomonas boliviensis is a moderate halophilic bacterium, isolated from a soil sample around a hypersaline lake Laguna Colorada in the Andean region of Bolivia. The organism is capable of growing over a wide range of NaCl concentration (0-25 %, w/v), however with an optimum of about 4.5 % (w/v) NaCl. READ MORE

  4. 2. Production of Ectoines and Poly(3-Hydroxybutyrate): High Cell-Density Cultivation of Halomonas Boliviensis

    Author : Hector Guzmán; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; poly 3-hydroxybutyrate ; hydroxyectoine; ectoine; Halomonas boliviensis; compatible solutes; Fed-batch cultivation;

    Abstract : This thesis reports a study involving the use of Halomonas boliviensis, a moderate halophile, for production of biopolyester poly(3-hydroxybutyrate) (PHB) and compatible solutes ectoine and hydroxyectoine through high cell-density cultivation comprising fed-batch cultures. PHB is a biodegradable plastic produced by bacteria as energy reserve and can potentially be used as a replacement of fossil based plastic. READ MORE

  5. 3. Halomonas species as a source of poly(3-hydroxybutyrate). Preparation of hydrophilic macroporous polymer scaffolds

    Author : Daniel Guzmán; Bioteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Halomonas species; poly 3-hydroxybutyrate ; genome sequence; Fed-batch cultivation; macroporous scaffolds;

    Abstract : This thesis presents studies on moderately halophilic bacteria belonging to the family Halomonadaceae that accumulate polyhydroxybutyrate (PHB) in high amounts when grown under conditions of nitrogen limitation. PHB is the simplest homopolymer belonging to the class of polyhydroxyalkanoates (PHAs), the biopolyesters that can biodegraded in the environment to carbon dioxide and water and are hence attractive substitutes for fossil-derived plastics. READ MORE

  6. 4. Strategies for Utilizing Biobased and Recycled Resources for Polylactide Plasticization

    Author : Xi Yang; Minna Hakkarainen; Karin Odelius; Youssef Habibi; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polylactide; poly 3-hydroxybutyrate ; poly butylene succinate-co-adipate ; bio-based; microwave; reactive extrusion; recycling; plasticizing; migration resistance; crystallization; polylaktid; poly 3-hydroxibutyrat ; poly butylen succinat-sam-adipat ; biobaserade; mikrovågsugn; reaktiv extrudering; återvinning; mjukgörare; migrationsmotstånd; kristallisering; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : There are many aspects that should be considered to achieve truly "environmental friendly" and "sustainable" materials. These include the raw material resource, the energy consumption, the chemicals generated and used, the emissions during production, processing, transportation, disposal and so on. READ MORE

  7. 5. Mass-Transport through Interfaces

    Author : Sofie Gårdebjer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; poly 3-hydroxybutyrate ; permeability; diffusion cells; poly lactide-co-glycolide acid ; mass-transport; polyethylene; poly lactic acid ; ethylene acrylic acid; interfaces; cellulose;

    Abstract : Many of the products in our daily life consist of layered structures, where packaging materials and wound care products can be mentioned as examples. These structures often consist of different kind of polymeric materials and between these materials interfaces are formed. READ MORE