Stability of adenine-based cytokinins in aqueous solution.

Since the isolation of the first cytokinin almost 60 yr ago, cytokinins have become critically important for ornamental and agricultural crops in plant tissue culture. Despite the extensive research on this class of compounds, little information is available on the chemical stability of cytokinins in solution or following an autoclave cycle with Murashige and Skoog (MS) basal medium. This work describes the stability in aqueous solutions of five widely used adenine-based cytokinins: trans-zeatin (tZ), 6-(γ,γ-dimethylallylamino) purine (2iP), kinetin, benzyladenine (BA), and -topolin.

Surface extenders and an optimal pore size promote high dynamic binding capacities of antibodies on cation exchange resins.

Increased recombinant protein expression yields and a large installed base of manufacturing facilities designed for smaller bulk sizes has led to the need for high capacity chromatographic resins. This work explores the impact of three pore sizes (with dextran distribution coefficients of 0.4, 0.

Thermally associating polypeptides designed for drug delivery produced by genetically engineered cells.

Thermally associating polymers, including gelatin, cellulose ethers (e.g., Methocels and poloxamers (e.