Effect of metal ions on the binding reaction of (−)-epigallocatechin gallate to β-lactoglobulin

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• 作者：Liangliang Zhang^a ; ^{zhll20086@163.com} ; Indra Dev Sahu^b ; Man Xu^a ; Yongmei Wang^a ; Xinyu Hu^a
• 关键词：(&minus ; )-Epigallocatechin gallate ; β-Lactoglobulin ; Metal ions ; Fluorescence ; CD spectroscopy
• 刊名：Food Chemistry
• 出版年：2017
• 出版时间：15 April 2017
• 年：2017
• 卷：221
• 期：Complete
• 页码：1923-1929
• 全文大小：1516 K
• 卷排序：221

文摘

Effects of metal ions on the interaction between EGCg and β-Lg were investigated. Cu2+ increases the quenching efficiency of EGCg to β-Lg by more than EGCg alone. Mn2+, Al3+, Zn2+ and Sn2+ obviously decreased the binding affinity of EGCg to β-Lg. [β-Lg-Cu] significantly increased the affinity of EGCg binding to β-Lg by 115.44%. [β-Lg-Cu] and [β-Lg-Al] interaction results in unfolding of the structure of β-Lg.