Search for dissertations about: "malic acid"

Showing result 1 - 5 of 9 swedish dissertations containing the words malic acid.

2. 1. Wild plants can improve their rhizosphere chemistry in acid soils

   Author : Marion Schöttelndreier; Biologiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtekologi; Plant ecology; wild plants.; time pattern; soil heterogeneity; rhizotrons; rhizosphere; pH; oxalic acid; nutrient availability; malic acid; hydroponics; citric acid; 14C; biodegradation; acid soils; aluminium toxicity; Soil Science; agricultural hydrology; Lantbrukshydrologi; marklära; Plant biochemistry; Växtbiokemi;

   Abstract : Growth conditions on acid soils may be hampered by low nutrient availability and phytotoxic Al (aluminium) concentrations. In this thesis I present my studies on adaptation mechanisms of wild plants to acid soils in the close root environment, the rhizosphere. READ MORE

4. 2. Malic acid production by Aspergillus oryzae

   Author : Christoph Knuf; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; C4 dicarboxylic acids; Aspergillus oryzae; systems biology; fermentation; malic acid; metabolic engineering;

   Abstract : Malic acid is a C4 dicarboxylic acid which is used as an acidulant in food and beverages. It isalso considered as a bio-building block to replace petrochemically derived compounds in thepost oil era. This organic acid can be biotechnologically derived from fermentation usingrenewable feedstocks as carbon source. READ MORE

5. 3. Atmospheric Change and Potato. The Impact of tropospheric ozone and elevated carbon dioxide on tuber yield and quality

   Author : Kristin Piikki; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bintje; carbohydrate; carbon dioxide; citric acid; cultivar; fructose; glucose; Kardal; macronutrient; malic acid; mineral; open-top chamber; OTC; ozone; potato; Solanum tuberosum; starch; variety; yield;

   Abstract : .... READ MORE

6. 4. Synthesis and characterization of dendritic macromolecules based on 2,2-bis(hydroxymethyl)propionic acid

   Author : Henrik Ihre; KTH; []
   Keywords : ;

   Abstract : Dendrimers are a relatively new type of macromolecules characterized by a well-defined, highly branthed, layered structure with a multitude of chain ends, adopting a globular shape at higher molar masses. Dendrimers are usually constructed from ABx type of monomers in either one of the two step-wise approaches known as thedivergentor theconvergent growth approach. READ MORE

7. 5. Low Molecular Weight Organic Acids and Their Aluminium Complexes in Forest Soils

   Author : Patrick van Hees; F. C. Ugolini; Linköpings universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : The significance of low molecular weight (LMW) organic acids and their aluminium (Al) complexes in soil solutions of podzolized soils was examined. Methods for the analysis of these compounds and complexes were developed, and the impact of these substances on the weathering and podzolization processes was studied. READ MORE