Disclosed herein are methods for purifying RNA comprising poly A. Also disclosed herein are compositions such as surfaces and oligonucleotides for purifying RNA comprising polyA. Other embodiments are also disclosed. Commercially-available resins having polythymidine oligonucleotide ligands typically contain less than 30 thymidine (2′deoxy) residues and some commercial resin suppliers utilize a distribution of dT chain lengths, not of a discreet length.

Provided are methods of preparing high molecular weight nucleic acids for analysis. In certain embodiments, the methods comprise migrating nucleic acids comprising high molecular weight nucleic acids through a polymeric matrix, excising a portion of the polymeric matrix comprising high molecular weight nucleic acids, and isolating the high molecular weight nucleic acids from the excised polymeric matrix. The isolating comprises immobilizing the high molecular weight nucleic acids on particulate solid supports, and eluting the high molecular weight nucleic acids from the particulate solid supports. The methods may further comprise analyzing the isolated high molecular weight nucleic acids. According to some embodiments, the analyzing comprises sequence analysis of the isolated high molecular weight nucleic acids, e.g., using a nanopore- or zero mode waveguide (ZMW)-based sequencing device.

The invention discloses a separation matrix comprising polysaccharide gel beads, wherein said polysaccharide gel beads comprise embedded fibers. The invention further discloses a method of preparing the separation matrix and use of the matrix for separation purposes.

Compositions and methods for the selective sequestration of metal ions are generally described.

The present invention relates to a preparation method of an edible and biodegradable environmental-friendly tableware, and the present invention provides a preparation method of a natural macromolecule-based edible and degradable tableware, where the principles of endogenous diffusion and polymer crosslinking to prepare an edible tableware such as a straw, a cup and a bowl from a microscopic state. The tableware material of the present invention may degrade rapidly under natural conditions and requires no composting. The tableware prepared by the method of the present invention has an excellent water stability performance. In terms of material acquisition, carrageenan, sodium alginate and other raw materials are widely available and stable, and may constitute a good substitute for grain starch, wood, etc., and the material cost is low.

A protein-binding product comprising one or more porous polymer beads, wherein at least one ligand is bound to the surfaces of said polymer beads via a spacer (R), and wherein said at least one ligand is Gal1-3HexNAcO, Gal1-4GlcNAcO and/or a derivative thereof, is disclosed as well as a device containing said protein-binding product and a method for reduction of the level of at least one galactose-binding protein and optionally at least one other protein in human blood plasma.

Materials and methods for generating protein-polymer conjugates on solid supports are provided herein. The methods can include, for example, reversibly immobilizing a protein on a solid support, modifying the protein by adding polymer subunits, and releasing the protein-polymer conjugate from the solid support.

The invention relates to a novel biomimetic affinity purification material and its application in the purification of chitosanase, which belongs to the field of industrial biotechnology. The affinity ligand for the biomimetic affinity material is chitodisaccharides, the connecting arm is cyanuric chloride, and the base medium is epoxy-activated Sepharose 6B. The desorption constant (K.sub.d) and the theoretical maximum adsorption capacity (Q.sub.max) of the biomimetic affinity material are 24.2 g/mL and 24.1 mg/g, respectively. Using the above biomimetic affinity material, a chitosanase biomimetic affinity purification method is established, which can produce high-purity chitosanase with high efficiency and low cost, and has good industrial application potential.

Agaroid structures in the form of an agaroid matrix, a sintered agaroid, or an agaroid mat are disclosed which may, in some embodiments, include a chemically crosslinked agaroid, a derivatized agaroid, and/or an agaroid coupled with one or more ligands. The agaroid structures may be formed by precipitation from a glycol solution, in some cases, and may be converted to be insoluble in water below 40C. In another aspect, methods of treating a condition of a mammal are disclosed, which include contacting an area of a mammalian body with a composition having an agaroid structure with or without one or more beneficial agents. In yet another aspect, the present disclosure provides methods of filling or bulking tissue in a mammalian body by implanting a converted agaroid composition into the mammalian body, which may include converted agaroid microbeads and/or converted agaroid particles.

The present invention relates to dimeric pentadentate chelators with exceptionally strong binding of metal ions, for detection, immobilization and purification of biomolecules. Dimeric chelators offer a cooperativity of binding of two adjacent immobilized metal ions simultaneously to a histidine-tagged biomolecule, which gives advantageous properties regarding strength of binding compared to a corresponding monomer chelator. In addition, a dimer increases the selectivity (ease of separation) against non-tagged biomolecules with low metal-ion affinity.