摘要:
The present invention relates to a sorbent comprising a solid support material, the surface of which comprises a residue of a general formula (I), wherein the residue is attached via a covalent single bond to a functional group on the surface of either the bulk solid support material itself or of a polymer film on the surface of the solid support material. Furthermore, the present invention relates to the use of the sorbent according to the invention for the purification of organic molecules, in particular pharmaceutically active compounds, preferably in chromatographic applications.
摘要:
The present invention relates to a separation matrix comprised of a porous or non-porous support to which ligands have been immobilised, wherein said ligands comprise at least one aliphatic sulfamide. The invention also relates to a chromatography column that contains the described separation matrix, as well as to a method of isolating immunoglobulins, such as IgG, Fab fragments, fusion proteins containing immunoglobulins etc, by adsorption to a separation matrix that comprises the aliphatic sulfamide ligands of the invention.
摘要:
Disclosed herein are a method of extracting and purifying from an epothilone-containing material and a method of separating high-purity epothilone A and B using the method.
摘要:
El hidroxitirosol, 3,4-(dihidroxifenil) etanol, es un compuesto natural procedente de la oliva con importantes propiedades biológicas. La presente invención provee un procedimiento para la extracción de compuestos con capacidad antioxidante procedentes de los productos derivados de la producción de aceite de oliva. El procedimiento incluye las etapas de extracción con una mezcla de disolventes adecuados sobre el agua de vegetación de la oliva o sobre un extracto concentrado específico; la fase orgánica separada que contiene a los componentes polifenólicos antioxidantes solubles, se pone en contacto con una resina del tipo XAD. Finalmente los componentes polifenólicos retenidos en la resina se recuperan empleando agua, obteniéndose un extracto que contiene como mínimo un 40% en hidroxitirosol.
摘要:
A process for separating and isolating individual polar protic monomer(s) and/or oligomer(s) on the basis of degree of polymerization is disclosed. A liquid sample containing monomer(s) and/or oligomer(s) is introduced into a liquid chromatography (LC) column packed with a polar bonded stationary chromatographic phase. The individual monomer(s) and/or oligomer(s) are separated via a binary mobile phase elution. The monomer(s) and/or oligomer(s) may be proanthocyanidins, hydrolyzable tannins, oligosaccharides, oligonucleotides, peptides, acrylamides, polysorbates, polyketides, poloxamers, polyethylene glycols, polyoxyethylene alcohols, or polyvinyl alcohols. The binary mobile phase comprises an A phase consisting essentially of a polar aprotic solvent and a B phase consisting essentially of a polar protic solvent. A process for separating and isolating xanthine(s) e.g., caffeine and theobromine is also disclosed. A liquid sample containing xanthine(s) and the monomer(s) and/or oligomer(s) is introduced into an LC column packed with a polar bonded stationary chromatographic phase. The xanthines are separated via an isocratic mobile phase elution and the individual fraction(s) are eluted. A process for separating and isolating the xanthines as well as polar protic monomer(s) and/or oligomer(s) is also disclosed. The phases discussed above are used in this rocess.
摘要:
The present invention provides novel chromatographic materials, e.g., for chromatographic separations, processes for its preparation and separations devices containing the chromatographic material; separations devices, chromatographic columns and kits comprising the same; and methods for the preparation thereof. The chromatographic materials of the invention are high purity chromatographic materials comprising a chromatographic surface wherein the chromatographic surface comprises a covalently-bonded surface group and one or more ionizable modifier.
摘要:
The invention provides a packing method for high efficiency chromatography columns starting from dry swellable particles, as well as columns packed by the method and the use of the columns in separation of biomolecules. In the packing method, an amount of dry swellable particles sufficient to give a swollen volume in a liquid of about 105-120 % of the column chamber volume is transferred to the column, the column is closed and the liquid is provided to the column.