β-Carotene and astaxanthin with human and bovine serum albumins

被引：101
作者：
Li, Xiangrong [1 ,2 ]
Wang, Gongke [2 ]
Chen, Dejun [2 ]
Lu, Yan [2 ]
机构：
[1] Xinxiang Med Univ, Sch Basic Med, Dept Chem, Xinxiang 453003, Henan, Peoples R China
[2] Henan Normal Univ, Sch Chem & Chem Engn, Key Lab Green Chem Media & React, Minist Educ, Xinxiang 453007, Henan, Peoples R China
来源：
FOOD CHEMISTRY | 2015年 / 179卷
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
beta-Carotene; Astaxanthin; Human serum albumin; Bovine serum albumin; Fluorescence spectroscopy; UV-vis absorption spectroscopy; FT-IR; FLUORESCENCE SPECTROSCOPY; BINDING; SURFACTANTS; BERBERINE; BEHAVIOR;
D O I：
10.1016/j.foodchem.2015.01.133
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
beta-Carotene and astaxanthin are two carotenoids with powerful antioxidant properties. In this study, the interaction of these two carotenoids with human serum albumin (HSA) and bovine serum albumin (BSA) under physiological conditions was investigated using several spectroscopic techniques. The experimental results indicate the quenching mechanism of HSA/BSA, by the two carotenoids, is a static process. The binding constants and number of binding sites were evaluated at different temperatures. Thermodynamic investigations revealed the interaction between the two carotenoids and HSA/BSA is synergistically driven by enthalpy and entropy, and hydrophobic forces and electrostatic attraction have a significant role in the reactions. Binding site I was found to be the primary binding site for beta-carotene and astaxanthin. In addition, as shown by synchronous fluorescence spectroscopy and FT-IR, the two carotenoids may induce conformational and micro-environmental changes in HSA/BSA. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：213 / 221
页数：9
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