Search for dissertations about: "phytase"

Showing result 1 - 5 of 10 swedish dissertations containing the word phytase.

  1. 1. Factors Influencing Phytate Degradation in Piglets. Feed phytate behaviour and degradation by microbial phytases

    Author : Katrine Pontoppidan; [2009]
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; pigs; in vitro digestion; P. lycii; inositol phosphates; phytate; phytase;

    Abstract : Phytate, the main storage form of phosphorus (P) in plant feedstuffs, is indigestible for monogastric animals, and phytases are therefore used as feed additives to increase the digestibility of phytate-P and limit the inclusion of inorganic P. However, new and improved phytases are needed to obtain better phytate digestibility and allow for lower inclusions of inorganic P. READ MORE

  2. 2. Yeast biotechnology for nutritional improvements of fermented cereal-based foods - Phytate degradation and folate production

    Author : Andreas Hellström; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mineral availability; phosphate; togwa; starter culture; Yeast; food fermentation; phytase; phytate; folate;

    Abstract : Anaemia is a serious public health problem in nearly all developing countries. It has negative consequences on cognitive and physical development of children, reduces work capacity in adults, and increases the risk of maternal and child mortality. READ MORE

  3. 3. On yeasts from traditional fermented foods - Characterization, phytate degradation, strain improvement and applications

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Linnea Qvirist; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Phytase; Saccharomyces cerevisiae; Phytate; Pichia kudriavzevii; Phenotypic Characterization; Goat Milk; Food Fermentation; Kluyveromyces marxianus; Yaghnob Valley;

    Abstract : Plant materials naturally contain minerals of iron, zinc and calcium. However, plants also contain a compound called phytic acid, which can chelate the minerals and form insoluble complexes. Minerals from plant foods are unavailable for intestinal uptake when they are bound in phytate complexes. READ MORE

  4. 4. Phytases in Saccharomyces cerevisiae. Exploring genes and proteins for the improvement of strains

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Jenny Veide; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; phytase; yeast; acid phosphatase; in vitro digestion; PHO; Saccharomyces cerevisiae; phytate; myo-inositol hexaphosphate;

    Abstract : Degradation of myo-inositol hexaphosphate (InsP6, phytate) in food or feed by InsP6-degrading enzymes (phytases) is known to increase the availability of minerals and phosphate, which leads to a higher nutritional value. The aim of this work was to explore the extracellular degradation of InsP6 by Saccharomyces cerevisiae. READ MORE

  5. 5. Thermostable Phytase from a Bacillus sp.: Heterologous Production, Mutation, Characterization and Assay Development

    University dissertation from Lund University (Media-Tryck)

    Author : Tran Thi Thuy; Lund University.; Lunds universitet.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ß-propeller phytase; recombinant protein; site-directed mutagenesis; phytate;

    Abstract : Phytase is an important enzyme in the food/feed industry. It catalyzes the hydrolysis of phytate, an anti-nutrient compound present in cereals and grains, to release orthophosphate and myo-inositol-6-phosphate with lower degrees of phosphorylation. READ MORE