Peptide Preparation Methods TRIZ Cases

Chaotropic agents and oxygen facilitate correct folding of recombinant proteins from bacterial hosts, resolving misfolding issues.

A thiol-reactive additive caps inhibitory by-product thiols to boost antibody functional group production yield.

A powdered biological substance mixed with water enables phycocyanin extraction through freezing and thawing cycles.

Inert gas removes evaporated deprotecting base from the reaction headspace, reducing solvent waste and washing steps in solid phase peptide synthesis.

Anion exchange chromatography with arginine washing isolates high sialic acid isoforms of darbepoetin alfa.

Anion exchange chromatography elutes polypeptides using ammonium acetate buffers to separate gamma-carboxyglutamic acid species.

Adding water-soluble silicates precipitates chlorophyll into insoluble complexes, removing green color and taste while retaining protein bioactivity.

Antichaotropic salts modify buffer interactions to remove high molecular weight impurities and viral contaminants from hydrophilic antibodies.

N-heterocyclic carbenes convert disulfides to thioethers, eliminating carcinogenic aminophosphines and enabling catalyst recycling.

Genetically incorporating BCN lysine enables rapid attachment of tetrazine probes via inverse electron demand Diels-Alder reactions.

Fatty acid wash buffers compete for binding sites on Protein A columns to remove host cell proteins.

Continuous injection of 1-alkoxy-1-t-alkylperoxycyclohexane accelerates polymerization while maintaining high molecular weight despite blowing agent transfer.

Segmenting breeding into self-pollination and controlled crossing stabilizes genetic composition, resolving the trade-off between diversity and predictability.

Hydrophobic chelator aggregates partition antibodies from solution, replacing expensive Protein A chromatography to lower manufacturing costs.

A ferrocene-functionalized hexadecapeptide self-assembles on a gold electrode to detect L-arginine.

A dual affinity polypeptide mediates non-covalent binding between a target biomolecule and a solid support for efficient recovery.

Converting Carfilzomib to an oxalate salt removes acetamide impurities below 0.10 wt%, eliminating expensive chromatography steps.

Nitrogen overlay during heat treatment creates a reducing environment that disrupts disulfide bonds in recombinant proteins.

A novel G-CSF purification process isolates inclusion bodies with ionic surfactants and solubilizes them using chaotropic agents.

Density gradient centrifugation replaces chromatography to purify biological macromolecular complexes, enabling high-resolution structural analysis.

Solution-phase synthesis minimizes epimerization in macrocyclic peptides while filtration replaces aqueous washing to simplify large-scale GMP manufacturing.

Segmenting purification into low and high pH steps removes glycosylated variants to achieve 99.95% purity, resolving separation limits in single-stage methods.