Abstract:
The present invention provides a solid phase carrier capable of adsorbing a highly hydrophobic target molecule, for example, a membrane associated protein, and a solid phase carrier optimized not only for a highly hydrophobic target molecule, but also for an optionally chosen target molecule. More specifically, the present invention provides a solid phase carrier having a ligand and a capping agent immobilized thereon, with the hydrophobic property of the surface thereof adjusted to enable the binding of the target molecule to the ligand, or to increase the amount of target molecule bound to the ligand; various methods using the solid phase carrier (for example, method of concentrating, isolating, or purifying a target molecule, a method of selectively adsorbing a particular target molecule to the solid phase carrier, or a method of analyzing the interaction between ligand and target molecule therefor); a production method for the solid phase carrier; and an improvement method for a solid phase carrier having a ligand and a capping agent immobilized thereon and the like.
Abstract:
For the separation, removal, isolation, purification, characterisation, identification or quantification of plasminogen or a protein that is a plasminogen analogue, an affinity adsorbent is used that is a compound of formula (II) wherein one X is N and the other is N, C—Cl or C—CN; A is a support matrix, optionally linked to the triazine ring by a spacer; Z is O, S or N—R and R is H, C1-6 alkyl, C1-6 hydroxyalkyl, benzyl or &bgr;-phenylethyl; B is an optionally substituted hydrocarbon linkage containing from 1 to 10 carbon atoms; D is H, OH or a primary amino, secondary amino, tertiary amino, quaternary ammonium, imidazole, guanidino or amidino group; or B-D is —CHCOOH—(CH2)3-4—NH2; and q is 2 to 6.
Abstract:
Provided are a method of isolating a nucleic acid from a sample and a solid material for isolating the nucleic acid which can be used for the above method. The method includes contacting the sample with a bifunctional material containing an amino group and a carboxyl group at a first pH to bind the nucleic acid to the bifunctional material, the bifunctional material being positively charged at the first pH; and releasing the nucleic acid at a second pH which is higher than the first pH.
Abstract:
The present invention provides novel, polymeric supports, methods of making, and methods of using the supports, that have a fluorinated, amidated surface. The supports include polymeric microbeads, thin layers or membranes, plates, monoliths and the like. The supports are useful as packing materials for normal phase, reverse phase, and size exclusion chromatography, and provide high speed separation of analytes with excellent resolution. The fluorinated, amidated surface may include a composition comprising a plurality of repeating units, for example, having the following structure:
Abstract:
A method and a filter for efficiently removing harmful substances in ambient air or generated from tobacco, such as dioxins and pyrene, using DNA are provided. Specifically, in the method, gas containing harmful substances is brought into contact with DNA to be trapped by the DNA, thereby being removed. The filter for removing harmful substances includes DNA and a supporter for supporting the DNA.
Abstract:
This invention provides methods of retentate chromatography for resolving analytes in a sample. The methods involve adsorbing the analytes to a substrate under a plurality of different selectivity conditions, and detecting the analytes retained on the substrate by desorption spectrometry The methods are useful in biology and medicine, including clinical diagnostics and drug discovery.
Abstract:
The present invention relates to a method of treating a material contained in a vessel. This method involves a fluid present in the vessel and comprises at least one pressurisation step in which the pressure in the vessel is increased and at least one depressurisation step in which the pressure in the vessel is decreased. The invention further relates to an apparatus for executing this method and the products obtained by this method.
Abstract:
The invention pertains to the use of a granulate for the removal of liquid, gaseous and/or dissolved organic constituents from a process stream, said granulate consisting of dimensionally stable, porous synthetic particles with an extracting agent having a boiling point higher than 350° C. at 1 bar immobilized therein, characterized in that the granulate is obtainable by suspension polymerization of a monovinyl compound in the presence of a polyvinyl compound, with at least 50% wt. % of the monomer units having an aromatic structure and with the solvent for the monomers acting both as a non-solvent for the copolymer and as an extracting agent.
Abstract:
One aspect of the present invention relates to magnetic nanoparticles colloidally stabilized in aqueous milieu by association with an organic phase. The organic phase may be either a fluorinated polymer or an organic hydrocarbon bilayer, wherein the two layers are chemically bonded to each other. The stabilized particles are further non-toxic and provide useful enhancements in bioprocesses. Another aspect of the present invention relates to compositions comprising an oxygen-dissolving fluid vehicle and surface modified, nanometer-sized magnetic particles. The inventive compositions have utility in a wide range of applications, but are particularly suitable for use as recyclable oxygen carriers, separation and purification vehicles, and bioprocessing media, including fermentation processes.
Abstract:
A method for the manufacture of at least one sorbent having at least two different groups, which are capable of binding, for the selective binding of a substrate, characterized in that it comprises the steps (i) to (ii): (i) determining at least two groups capable of binding a sorbent from a synthetic or natural first substrate, (ii) respectivly applying at least two different groups capable of binding a second synthetic or natural substrate to one respective carrier, thereby forming at least one sorbent, whereby the groups are the same groups of step (i) or are groups that are complementary thereto, and the second substrate of step (ii) is the same or different from the first substrate according to step (i), and whereby the groups are determined such that the contributions of the Gibbs energies of the individual groups to the non-covalent bond with the second substrate yield a negative value of the Gibbs energy ΔG, such that a binding strengthening occurs that results in an improved separation selectivity with respect to at least one substance to be separated off.