Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 83 for “"Enzymatic Degradation"”.
-
Enzymatic degradation of egg yolk cholesterol
… The optimal enzyme concentration for cholesterol degradation was the lowest for Pf cholesterol oxidase at 0.5U/µmole cholesterol. Even at the low concentration of 0.125U/µmole cholesterol, Pf cholesterol oxidase degraded up to a third of the egg cholesterol in 2h. The cholesterol degrading …
-
Metabolic and Enzymatic Degradation of Several Aromatic Carbamate Insecticides
Made available in DSpace on 2014-12-09T20:27:19Z (GMT). No. of bitstreams: 1 6612334.pdf: 2984162 bytes, checksum: cf1ca8942e8c575b321b974b28c4be88 (MD5) Previous issue date: 1966
-
Enzymatic degradation of alpha and beta cyclodextrins by bacteroides from the human colon
Thirty Bacteroides strains from the human colon were tested for ability to degrade cyclodextrins (CD). Twenty four strains were able to degrade CD. Cyclodextrinase in two of these strains B. ovatus 3524 and B. distasonis Cl8-7 has been studied. Organisms were grown on a minimal medium containing CD …
-
Utilization of predispersed solvent extraction for removal and enzymatic degradation of chlorinated solvents in ground water
The feasibility of applying a recently developed liquid-liquid extraction method termed Predispersed Solvent Extraction (PDSE) in an <i>ex situ</i> pump-and-treat system to remove trace amounts of dissolved chlorinated solvents like perchloroethylene (PCE) and trichloroethylene (TCE) from …
-
Adsorption of Biomacromolecules onto Polysaccharide Surfaces
… Interfacial behavior, including adsorption and enzymatic degradation, of several plant cell wall polysaccharides and their derivatives were studied with a quartz crystal microbalance with dissipation monitoring (QCM-D), surface plasmon resonance (SPR) and atomic force microscopy (AFM). …
-
The Use of Gelatin in a Multiple Drug Delivery System
… protein stability and lead to release through enzymatic degradation of the gelatin. Growth factors released either singly or in a dual system from gelatin successfully produced bone in vivo. However, single release systems require higher dosages to achieve similar healing results as observed in …
-
Design of biopolymer-based networks with defined molecular architecture
… an influence also on the hydrolytic and enzymatic degradation of gelatin-based hydrogels. Hydrogels with a low crosslinker amount experienced a faster decrease in mass loss and elastic modulus compared to hydrogels with higher crosslinker content. Moreover, the structure of the …
-
Preparation and Evaluation of Cefuroxime Axetil Gastro-Retentive Floating Drug Delivery System for Improved Delivery via Hot-Melt Extrusion Technology
… amorphous Cefuroxime Axetil (CA) to minimize the enzymatic degradation in the gastro intestinal tract utilizing hot-melt extrusion technology for improved absorption. </p><p>Methods: Preliminary studies were performed to select the appropriate lipids. Selected ratios of CA and lipids were extruded …
-
Synthesis and characterization of matrix metalloproteinase sensitive hydrogels for articular cartilage engineering
… was used to crosslink the macromer, allowing for enzymatic degradation of the hydrogel and providing more void space for the production and deposition of extracellular matrix. Various formulations of OPF and crosslinker concentration were used to form the crosslinked hydrogels employed in the …
-
Synthesis of Hetero-chitooligosaccharides
… from the aminoglucan chitosan by chemical or enzymatic degradation which obviously affords rather heterogenous mixtures. On the other hand, chemical synthesis provides pure compounds with defined sequences of GlcNAc and GlcN monomers. The synthesis of homo- and hetero-chitobioses and …
-
Nitric oxide-induced DNA recombination & glycosaminoglycan mediated differentiation in stem cells
… machinery by chlorate treatment, or by the enzymatic degradation of the HSGAGs. Exogenous addition of heparin to chlorate-treated cells partially restored differentiation into endothelial cells. These effects were mirrored in phospho-ERK levels, suggesting the involvement of the MAPK …
-
Pretreatment Of Cellulosic Biomass By Iron-Containing Magnetic Ionic Liquid Dissolution
… however, lignocellulose is resistant to enzymatic degradation. Various biomass-preprocessing techniques such as microbial, mechanical, and chemical pretreatment are used for enhancing the digestibility of biomass to sugars for ethanol production. Varieties of ionic liquids have …
-
Immune Recognition of Self Nucleic Acids Driven By Endogenous Antimicrobial Peptides: Role In Autoimmunity
… of nano-scale particles protected from enzymatic degradation and transport it into the endosomal compartments of both plasmacytoid and myeloid dendritic cells. In the plasmacytoid DCs, the self-RNA-LL37 complexes activate TLR7 and like the self-DNA-LL37 complexes, trigger the production …
-
Multiblock Thermoplastic Polyurethanes For Biomedical and Shape Memory Applications
… oligosilsesquioxane (POSS) in suppressing enzymatic degradation of PCL-PEG TPUs is investigated. In vitro enzymatic hydrolytic biodegradation revealed that POSS incorporation significantly suppressed degradation of PCL-PEG TPUs. All TPUs were surface-eroded by enzymatic attack in which the …
-
Monosialylgangliosides from human meconium: characterization using specific anti-oligosaccharide antibodies
… in this way were carried out with sequential enzymatic degradation using specific exoglycosidases. The products of enzymatic digestions were identified by cochromatography in paper with known standards. Data obtained from these experiments are consistent with the presence of the following, …
-
Recombinant production and regioselectivity study of lytic polysaccharide monooxygenases
… is, however, very recalcitrant towards enzymatic degradation, representing one of the biggest hurdles to cost-effective bio-refining. In this regard, a major breakthrough came with the discovery of lytic polysaccharide monooxygenases (LPMOs). These enzymes oxidatively cleave and disrupt …
-
Isolation, expression, purification and characterisation of a novel acetyl xylan esterase from streptomyces species ORS10
… Lignocellulosics are highly recalcitrant to enzymatic degradation and due to its complex nature a range of enzymes are required to synergistically hydrolyse biomass. Many microorganisms are capable of producing these enzymes as part of their hemicellulolytic hydrolysis system(s). The aim of …
-
Degradation of microcystin-LR by aquatic bacteria.
… to know the factors affecting microcystin degradation which can be utilised in water treatment methods. This research is focused on activity of indigenous microflora in biolog MT2 plates and use of active isolates for degradation study. The growth and degradation patterns were compared with …
-
Engineering a microneedle patch for opioid overdose therapy
… exhibited enhanced mechanical strength, reduced enzymatic degradation (34.03% at 360 min), and a prolonged drug release profile (81.6% release over 24 h), verified via HPLC. Histological assessment in murine skin confirmed successful dermal penetration with crosslinked MNs. Furthermore, …
-
Food Safe Alternatives to Methyl Bromide in Country Ham Production
… application is time sensitive due to variable enzymatic degradation.
Page 1 of 5