A hierarchical catalyst composition comprising a continuous or particulate macroporous scaffold in which is incorporated mesoporous aggregates of magnetic nanoparticles, wherein an enzyme is embedded in mesopores of the mesoporous aggregates of magnetic nanoparticles. Methods for synthesizing the hierarchical catalyst composition are also described. Also described are processes that use the recoverable hierarchical catalyst composition for depolymerizing lignin, remediation of water contaminated with aromatic substances, polymerizing monomers by a free-radical mechanism, epoxidation of alkenes, halogenation of phenols, inhibiting growth and function of microorganisms in a solution, and carbon dioxide conversion to methanol. Further described are methods for increasing the space time yield and/or total turnover number of a liquid-phase chemical reaction that includes magnetic particles to facilitate the chemical reaction, the method comprising subjecting the chemical reaction to a plurality of magnetic fields of selected magnetic strength, relative position in the chemical reaction, and relative motion.

Provided are: a protein complex capable of selectively and asymmetrically oxidizing an enantiomer of a secondary alcohol without adding a coenzyme and having an asymmetric oxidation activity in a water-soluble solvent system in the presence of oxygen; a method for producing the same; and a method for coating the protein complex with a high molecular weight compound. The method for producing the protein complex includes: (1) enclosing a crude water-soluble protein in a gel, air-oxidizing the gel, and eluting the protein complex into an aqueous solution; and (2) applying gravity to concentrate and precipitate the protein complex, redissolving the precipitate in an aqueous glycine sodium hydroxide solution of about 0.5 mM and allowing the same to homogeneously coexist with a high molecular weight compound, and re-precipitating the solution and dehydrating and drying the same to yield a protein complex coated with a high molecular weight compound.

The present invention relates to compositions comprising: a polypeptide, wherein at least a portion of the polypeptide has a coiled coil structure; and a chelate comprising a chelating agent and a metal ion; and wherein the chelate is bound to at least one amino acid of the polypeptide. In a preferred embodiment the polypeptide is a silk fibroin, wherein at least a portion of said silk fibroin has a coiled coil structure.

A hierarchical catalyst composition comprising a continuous or particulate macroporous scaffold in which is incorporated mesoporous aggregates of magnetic nanoparticles, wherein an enzyme is embedded in mesopores of the mesoporous aggregates of magnetic nanoparticles. Methods for synthesizing the hierarchical catalyst composition are also described. Also described are processes that use the recoverable hierarchical catalyst composition for depolymerizing lignin, remediation of water contaminated with aromatic substances, polymerizing monomers by a free-radical mechanism, epoxidation of alkenes, halogenation of phenols, inhibiting growth and function of microorganisms in a solution, and carbon dioxide conversion to methanol. Further described are methods for increasing the space time yield and/or total turnover number of a liquid-phase chemical reaction that includes magnetic particles to facilitate the chemical reaction, the method comprising subjecting the chemical reaction to a plurality of magnetic fields of selected magnetic strength, relative position in the chemical reaction, and relative motion.

The invention provides a coffee pulp treatment process comprising (a) Providing coffee pulp, obtainable from a production process for producing green coffee beans from coffee cherries; (b) extracting from the coffee pulp a pectin comprising extract, wherein extraction is performed under acid conditions or alkaline conditions, to provide the pectin comprising extract; (c) enzymatic treatment of the pectin comprising extract, wherein the enzymatic treatment comprises a treatment with one or more enzymes selected from the group consisting of an esterase and a reductase, to provide a enzymatically treated pectin material; and (d) extraction of polyphenol functionalized coffee pectin extract from the enzymatically treated pectin material.

A method of quantifying ammonia, the method includes performing a first reaction in which a test liquid containing ammonia is reacted with adenosine triphosphate and L-glutamic acid in the presence of glutamine synthetase to produce phosphoric acid, performing a second reaction in which the produced phosphoric acid is reacted with pyruvic acid in the presence of pyruvate oxidase, and measuring a component consumed or produced by the second reaction, to quantify ammonia, wherein a reaction to produce adenosine triphosphate from adenosine diphosphate mediated by pyruvate kinase is not carried out.

The invention relates to the field of degradation of fluor containing substances by bioconversion.

Provided are: a protein complex capable of selectively and asymmetrically oxidizing an enantiomer of a secondary alcohol without adding a coenzyme and having an asymmetric oxidation activity in a water-soluble solvent system in the presence of oxygen; a method for producing the same; and a method for coating the protein complex with a high molecular weight compound. The method for producing the protein complex includes: (1) enclosing a crude water-soluble protein in a gel, air-oxidizing the gel, and eluting the protein complex into an aqueous solution; and (2) applying gravity to concentrate and precipitate the protein complex, redissolving the precipitate in an aqueous glycine sodium hydroxide solution of about 0.5 mM and allowing the same to homogeneously coexist with a high molecular weight compound, and re-precipitating the solution and dehydrating and drying the same to yield a protein complex coated with a high molecular weight compound.

Variant or mutant prokaryotic cells are disclosed that express elevated or increased levels of a wide variety of active proteins. Also disclosed are methods of producing the elevated or increased levels of active encoded proteins.

The disclosure provides products and methods for the heterologous expression of proteins in host cells. The provided expression constructs, bacterial cells and methods produce a PnlP-1 accessory protein that increases the yield of a heterologous protein of interest.