Search for dissertations about: "isolation of plant compounds"

Showing result 1 - 5 of 20 swedish dissertations containing the words isolation of plant compounds.

  2. 1. Isolation, characterization and enzymatic hydrolysis of water-soluble wood polysaccharides

    Author : Jon Lundqvist; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; size exclusion chromatography; beta-mannosidase; beta-mannanase; endoglucanase; ethyl hydoxyethyl cellulose; metabolism; Biokemi; Biochemistry; Metabolism; microwave irradiation; O-acetyl-galactoglucomannan; isolation;

    Abstract : The need for new renewable products has enhanced the interest in cellulose and hemicellulose as raw material. The wood plant cell wall is a complex mixture of cellulose, hemicellulose, lignin and minor amounts of pectin, proteins and extractives. Several interactions between the compounds make them difficult to separate without modification. READ MORE

  4. 2. Cytotoxic Compounds of Plant Origin – Biological and Chemical Diversity

    Author : Petra Lindholm; Anders Backlund; Lars Bohlin; Kristín Ingólfsdóttir; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacognosy; pharmacognosy; cytotoxicity; antitumour; Nuphar alkaloid; cyclotide; thionin; cardiac glycoside; Farmakognosi; Pharmacognosy; Farmakognosi;

    Abstract : The development of resistance by tumour cells to chemotherapeutic agents is a major problem in cancer treatments. One way to counter this is to find compounds with cytotoxic mechanisms other than those of drugs in clinical use today. READ MORE

  5. 3. Polyporoid fungi of Tanzania : Taxonomy, transcriptomics and biochemical analyses of Kusaghiporia usambarensis and Piptoporellus baudonii

    Author : Juma Mahmud Hussein; Sanja Tibell Savić; Donatha Tibuhwa; Christina Wedén; Ulf Göransson; Jan Stenlid; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Systematics; Laetiporaceae; pharmacognosy; cysteine-rich peptide; baudonii; Biology with specialization in Systematics; Biologi med inriktning mot systematik;

    Abstract : Polyporoid fungi refers to basidiomycetes with fruiting bodies with the hymenium located to the inner surfaces of pores or narrow tubes. The majority of polyporoids belongs to Polyporales. Most Polyporales are saprobes, but some are plant pathogens. READ MORE

  6. 4. Discovery of Secondary Metabolites from Rwandese Medicinal Plants : Isolation, Characterization and Biological Activity

    Author : Daniel Umereweneza; Máté Erdélyi; A Gogoll; Théoneste Muhizi; Yngve Stenstrøm; Uppsala universitet; []
    Keywords : Natural products; Nuclear Magnetic Resonance NMR ; Dihydrochalcones; Iridoids; Silphiperfolanols; Pyrrolizidine alkaloids PAs ; Rwandese Medicinal Plants; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

    Abstract : Plants have served as the principal source of medicines in different parts of the world through the ages. Herb-derived medicines have been used as decoctions, infusions, tinctures or single substance drugs. READ MORE

  7. 5. Secondary plant metabolites as defence against herbivores and oxidative stress : Synthesis, isolation and biological evaluation

    Author : Katharina Bratt; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; organisk kemi; Organic Chemistry;

    Abstract : In this thesis the isolation, synthesis and biological evaluation of natural defense compounds against herbivores or oxidative stress is discussed.The first part concerns the metabolites of platyphylloside ((5S)-5-hydroxy-1,7-bis-(4-hydroxyphenyl)-3-heptanone-5-O-β-D-glucopyranoside), a phenolic glucoside found in birch (Betula pendula) that possess digestibility inhibiting activity in herbivores. READ MORE