Abstract:
The present invention relates to a material used for phosphopeptide enrichment which are employed in diagnosis of several diseases in medicine, and a production method thereof comprising the steps of preparing the solvent mixture (11), adjusting the solvent temperature (12), dissolving precursor in the solvent mixture (13), dissolving another precursor in the solvent mixture (14), adding acid into the mixture (15), stirring the mixture (16), filtering the mixture (17), washing off the obtained solid material (18), drying the obtained material (19).
Abstract:
Methods, kits and devices for separating phospholipids and proteins from small molecules in biochemical samples can feature an apparatus having a wetting barrier, at least one frit and a separation media. For example, an apparatus can include at least one wall defining a chamber having an exit and an entrance; a wetting barrier disposed between the exit and entrance, so as to define a separation media space located between the wetting barrier and the exit and a sample receiving area located between the wetting barrier and the entrance; and a separation media disposed adjacent to the wetting barrier and having a specific affinity for phospholipids. The wetting barrier is adapted to (i) retain the liquid sample and a protein precipitating agent in the sample receiving area under a first force, thereby facilitating the formation of a protein precipitate and a processed sample, and (ii) flow the processed sample through the wetting barrier and separation media under a second force, wherein the second force is greater than the first force, thereby retaining the protein precipitate in the sample receiving area, retaining phospholipids in the separation media, and eluting small molecules.
Abstract:
A co-sintered porous polymer includes at least one molecule specific powder for adsorbing at least one target molecule from a complex liquid mixture when the liquid is passed through the porous co-sintered polymer. The co-sintered polymer can include a sintered porous polyethylene substrate. The or each molecule specific powder can be an immobilising adsorbent powder, for example a molecularly imprinted polymer or a rationally designed polymer.
Abstract:
Solid phase extraction devices including a plurality of packed nominally aligned capillary-channeled polymeric fibers for use as stationary phase materials are disclosed. A plurality of fibers are packed together in a casing so as to provide good flow characteristics through the fibers and high surface area contact between a sample and the fibers. Different polymer compositions of the fibers permit the "chemical tuning" of the extraction process. The fibers can be physically or chemically derivatized to target specific analytes for separation from a test sample. Use of the fibers allows a wide range of liquid flow rates with very low backpressures. The fibers are easily packed into a micropipette tip or a conduit for use with a fluid flow device such as an aspirator or a pump. The devices can be used for isolation and pre-concentration of analytes from samples, for instance for proteins from buffer solutions or extraction of pollutants from remote locations.
Abstract:
The invention relates to products containing one or more charged biomaterial(s) immobilised to an ion exchanger in a reversible form wherein the ion exchanger is attached to the internal surface of a plastic pipette tip, and to a method for the preparation thereof. The products are useful for stabilising, storing, transporting and pre-dispensing charged biomaterials.
Abstract:
This invention relates to low molecular weight analyte sequestration, storage, transport and recovery device and methods for its use with saliva samples in the detection of glucose and other low molecular weight analytes. A stimulated or non-stimulated saliva sample is contacted with a matrix (16) disposed within a container (12) that adsorbs glucose, absorbs water and excludes molecules above a certain size when hydrated. After hydration of the matrix by the saliva sample, the glucose is both adsorbed to the matrix, and migrates into the cavities within the matrix, whereas microbes such as bacteria and larger molecules such as proteins cannot. A membrane (18) keeps the matrix (16) in the bottom of the container (12). The sample is then transported to a location where the glucose will be eluted from the matrix and assayed.
Abstract:
The present invention provides an integrated system capable of selectively retrieving and concentrating specific biomolecules from biological media for subsequent high-performance analyses, quantifying targeted proteins, recognizing variants of targeted biomolecules (e.g., splice variants, point mutations and posttranslational modifications) and elucidating their nature, analyzing for, and identifying, ligands interacting with targeted biomolecules, and high-throughput screening of large populations of samples using a single, unified, economical, multiplexed and parallel processing platform. The prefer-red embodiment of the integrated system comprises molecular traps, such as affinity microcolumns, derivatized mass spectrometer targets, mass spectrometers capable of multi-sample input and robotics with processing/data analysis interactive database. The present invention also includes methods and processes for use of the individual components and the integrated system in biological applications. Furthermore, the preferred embodiment of the present invention provides for the preparation and/or processing of multiple separate devices and/or samples to accomplish high throughput analysis.
Abstract:
A method for detoxifying a carbohydrate containing solution is disclosed, as well as a device for use in said method, a method for identification and determination of the toxicity of a carbohydrate containing medical solution and a carbohydrate containing medical solution as such. Also disclosed is a method for detoxifying a carbohydrate containing cell cultivation fluid or food in fluid form, a method for the production of 3,4-dideoxy-glucosone-3-ene and use of a 3,4-dideoxy-glucosone-3-ene detoxifying agent for the production of a medical solution for the treatment of diseases involving disturbed carbohydrate metabolism or compromised removal of carbohydrate degration products.
Abstract:
The present invention relates to a device for small volume sample preparation using tubes (1), columns, and sheets, such as capillaries or pipette tips, in which particles of a separation medium (4), such as particles of a chromatography material used for sample preparation, are directly embedded in the solid material composing the tubes (1) or columns or sheets. The present invention minimizes sample loss and is well suited for samples with volumes in nanoliters.
Abstract:
A chromatographic material for separating mixtures of nucleic acids is produced by reacting a carrier with a silanising reactive that contains a reactive group reacted with an alkyl amine or dialkyl amine or a reactive group that may react with an alkyl amine or dialkyl amine and that is then reacted with an alkyl amine or dialkyl amine.