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JC Kim

Publications and source records attributed to JC Kim.

6 recordsLinked to original sources
PubMed1999

N-Acetyl derivatives of type C fumonisins produced by fusarium oxysporum

Four new fumonisins, an isomer of fumonisin C1 (iso-FC1) (1) and three N-acetyl derivatives of hydroxylated fumonisin C1 (OH-FC1) (2), fumonisin C1 (FC1) (3), and iso-FC1 (4) were isolated from wheat cultures of Fusarium oxysporum. One of the hydroxy groups of compound 1 is at C-3 instead of C-4 for FC1. Compounds 2-4 are similar in structure to OH-FC1, FC1, and iso-FC1, respectively, except for the presence of an acetyl group at the amine of C-1.

Journal Article↗
PubMed1998

Kinetics of beta-lactoglobulin adsorption onto stainless steel surfaces

Adsorption kinetics of beta-lactoglobulin onto stainless steel at low concentrations were studied to determine adsorption rate constants for monolayer coverage. Experimental data obtained from a batch reactor were described quantitatively using a reversible adsorption model which becomes the Langmuir-type adsorption isotherm at equilibrium. The forward rate constant, k1, and backward rate constant, k2, were 10(5) mL g-1 min-1 and 5 x 10(-)3 min-1, respectively. A high-performance liquid chromatographic system using a stainless steel column packed with stainless steel particles (column adsorption reactor) was also used to measure adsorption with a step change of beta-lactoglobulin solution. The difference in behavior of an adsorption and a desorption isotherm in this column adsorption reactor suggested surface denaturation of beta-lactoglobulin after adsorption which was consistent with other research work. beta-lactoglobulin adsorption in the column adsorption reactor was affected by volumetric flow rate and concentration up to 4 mL min-1 and 100 &mgr;g mL-1, respectively.

Journal Article↗