Search for dissertations about: "Ulva"

Showing result 1 - 5 of 14 swedish dissertations containing the word Ulva.

  2. 1. Polysaccharides from red and green seaweed : Extraction, characterisation and applications

    Author : Niklas Wahlström; Ulrica Edlund; Fredrik Gröndahl; Federica Chiellini; KTH; []
    Keywords : biorefinery; seaweed; macroalgae; Ulva; Porphyra; ulvan; porphyran; cellulose; gelatin; hydrogel; heavy metal; methylene blue; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Cultivation of seaweed has been conducted for centuries in Asia, but is largely undeveloped in Sweden even though there is potential for this industry. Seaweed offers benefits compared with land-based biomass cultivation. READ MORE

  4. 2. Seagrasses and Eutrophication : Interactions between seagrass photosynthesis, epiphytes, macroalgae and mussels

    Author : Esther Francis Mvungi; Mats Björk; Thomas J. Lyimo; Jens Borum; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CO2; epiphytes; eutrophication; mussels; pH; Photosynthetic activities; seagrasses; Ulva; Plant physiology; Växtfysiologi; Plant Physiology; växtfysiologi;

    Abstract : Seagrass meadows are highly productive, ecologically and economically valuable ecosystems. However, increased human activities along the coastal areas leading to processes such as eutrophication have resulted in the rapid loss and deterioration of seagrass ecosystems worldwide. READ MORE

  5. 3. Seaweeds as a future protein source: innovative cultivation methods for protein production

    Author : Kristoffer Stedt; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Macroalgae; Saccharina latissima; Ulva fenestrata; Ulva intestinalis; Chaetomorpha linum; Cultivation conditions; Nitrogen content; Amino acids; Heavy metals; Food safety; Wastewater; Process water; Circularity; Blue economy;

    Abstract : As the global population is projected to reach approximately 10 billion people by 2050, it is estimated that we will need to produce up to 60% more food compared to 2010. Although the current food production system contributes to 25% of greenhouse gas emissions worldwide, accounts for 70-80% of eutrophication and freshwater usage, and occupies half of all ice- and desert-free land, it fails to meet the global nutritional needs. READ MORE

  6. 4. Heavy metal contamination and toxicity : Studies of Macroalgae from the Tanzanian Coast

    Author : Florence Alex Mamboya; Mats Björk; Nils Ekelund; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Heavy metals; Padina gymnospora; Ulva reticulata; salinity; nutrients; proteins; uptake; growth; Fv Fm; Zanzibar Channel; Plant physiology; Växtfysiologi; växtfysiologi; Plant Physiology;

    Abstract : Concentrations of various metals are elevated above background levels in several intertidal areas along the Tanzanian coasts. However, there is little available information concerning the toxicity of these metals and how the uptake of these metals by bioindicators are influenced by external factors, such as heavy rains and increased coastal eutrophication, which tend to fluctuate. READ MORE

  7. 5. Evaluating Swedish seaweeds for biorefinery

    Author : Joakim Olsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; proteins; carbohydrates; salinity; chemical composition; ulvan; variation; Ulva spp.; Seaweed; macroalgae; hydrothermal liquefaction;

    Abstract : A sustainable future demands a transition from oil to biomass to produce fuels, chemicals, commodities, and energy. However, to generate the predicted amount of bioenergy required by 2050, all the biomass harvested today should be utilized. One type of biomass that has received relatively little attention is seaweeds. READ MORE