Effect of human and bovine serum albumin on kinetic chemiluminescence of Mn (III)-Tetrakis (4-sulfonatophenyl) porphyrin-luminol-hydrogen peroxide system.

The present work deals with an attempt to study the effect of human and bovine serum albumin on kinetic parameters of chemiluminescence of luminol-hydrogen peroxide system catalyzed by manganese tetrasulfonatophenyl porphyrin (MnTSPP). The investigated parameters involved pseudo-first-order rise and fall rate constant for the chemiluminescence burst, maximum level intensity, time to reach maximum intensity, total light yield, and values of the intensity at maximum CL which were evaluated by nonlinear least square program KINFIT. Because of interaction of metalloporphyrin with proteins, the CL parameters are drastically affected. The systems resulted in Stern-Volmer plots with k(Q) values of 3.17 × 10(5) and 3.7 × 10(5) M(-1) in the quencher concentration range of 1.5 × 10(-6) to 1.5 × 10(-5) M for human serum albumin (HSA) and bovine serum albumin (BSA), respectively.