期刊
JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS
卷 70, 期 5, 页码 743-747出版社
ELSEVIER
DOI: 10.1016/j.jbbm.2007.04.001
关键词
loratadine; fluorescence quenching; tryptophan; serum albumin
The interactions between loratadine and bovine serum albumin (BSA) and human serum albumin (HSA) were studied using tryptophan fluorescence quenching method. The fluorescence intensity of the two serum albumins could be quenched 70% at the molar ratio [loratadine]: [BSA (or HSA)]= 10: 1. In the linear range (0-50 mu mol L-1) quenching constants were calculated using Stem-Volmer equation. Temperature in the range 298 K-310 K had a significant effect (p<0.05) on the two serum albumins through ANOVA analysis and t-test. Furthermore the conformation changes in the interactions were studied using FTIR spectroscopy. (c) 2007 Elsevier B.V. All rights reserved.
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