In the present work, reusable magnetic molecularly imprinted polymers have been used for first time as an adsorbent determination of 2-phenylphenol. Magnetic selective separation and preconcentration 2-phenylphenol native fluorescence has sensitive analyte. The developed method is rapid was completed in 40 minutes. Limit detection (LOD) found to be 1.09 µg L-1 imprinting factor 1.87. linearity ...

A highly sensitive fluorimetric procedure based on alkylation of nicotinamide is described for the determination of aliphatic epoxides. Subsequent reaction of the resulting N-alkylnicotinamides with a ketone in basic medium yields strongly fluorescent products after final acidification. Sensitivity of the assay is in the picomole range with good reproducibility. The alkylation reaction proceeds...

Serum protease inhibitor activity was assessed from the ability of the serum to inhibit casein hydrolysis by ct-chymotrypsin (EC 3.4.4.5). Unmodified AutoAnalyzer equipment was used in conjunction with a fluorimetric method for dialyzable tyrosyl peptides. Serum, diluted with tris(hydroxymethyl) aminomethane buffer, was added to a chymotrypsin solution to inhibit its activity. For 72 sera, the ...

A reversed-phase LC method, optimised for the separation of trans- and cis-resveratrol, catechin, epicatechin, quercetin and rutin, is reported. Analyses were performed on a reversed-phase column by gradient elution. Detection was carried out by photodiode array, although the use of a fluorimetric detector considerably lowered the detection limits for catechin, epicatechin and both resveratrol ...

VON WARTBURG, J.P., BETHUNE, J.L. & VALLEE, B.L. (1964) Human liver alcohol dehydrogenase: kinetic and physiochemical properties. Biochemistry, 3, 1775. WACKER, W.E.C., HAYNES, H., DRUYAN, R., FISHER, W. & COLEMAN, J.E. (1965) Treatment of ethylene glycol poisoning with ethyl alcohol Journal of the American Medical Association, 194, 1231. WALLS, J., MORLEY, A.R. & KERR, D.N.S. (1969) Primary hy...