Structural interplay and macroscopic aggregation of rice albumins after binding with heavy metal ions
Structural interplay and macroscopic aggregation of rice albumins after binding with heavy metal ions
复制标题
大米清蛋白与重金属离子结合后的结构相互作用和宏观聚集
DOI:
10.1016/j.foodhyd.2019.105248
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发表时间:
2020
影响因子:
10.7
通讯作者:
Tao Wang
中科院分区:
文献类型:
--
作者:
Ren Wang;Tingting Wang;Tiantian Dong;Qixin Zhong;Zhengxing Chen;Wei Feng;Tao Wang
Contamination of cereal grains by heavy metals is becoming a serious threat to human health, especially in the central regions of China. Herein, we report drastic changes in the supramolecular nanostructures of rice albumins (RAs) after binding with Cu(II), Cd(II), and Pb(II). Atomic force microscopy and scanning electron microscopy revealed that Cu(II) initiated an immediate precipitation of RAs, whereas Cd(II) and Pb(II) promoted the formation of core-satellite structures with a core of multiple protein particles surrounded by satellite particulates. Fluorescence and isothermal titration calorimetry studies revealed an entropy-driven, spontaneous behavior of the binding. Consequently, remarkable helix-sheet transitions of RAs were triggered and macroscopic precipitation occurred due to hydrophobic attraction. Our results may help to understand the binding between heavy metals and cereal ingredients from a hydrocolloid perspective to eventually develop detection and removal strategies to combat heavy metal contamination.
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影响因子:
10.7
作者:
Tao Wang;Pengcheng Xu;Zhengxing Chen;Ren Wnag
通讯作者:
Ren Wnag
DOI:
10.1039/a808796b
发表时间:
1999
期刊:
The Analyst
影响因子:
--
作者:
Tran Dong Phuong;Serge Kokot;Pham Van Chuong;D. T. Khiem
通讯作者:
Tran Dong Phuong;Serge Kokot;Pham Van Chuong;D. T. Khiem
影响因子:
6.1
作者:
Yue Zhang;E. Wright;Q. Zhong
通讯作者:
Yue Zhang;E. Wright;Q. Zhong
影响因子:
3.9
作者:
R. Mann;G. Howlett;G. Baldwin
通讯作者:
R. Mann;G. Howlett;G. Baldwin
影响因子:
19
作者:
Tao Wang;Xianfu Chen;Q. Zhong;Zhengxing Chen;Ren Wang;Ashok R. Patel
通讯作者:
Tao Wang;Xianfu Chen;Q. Zhong;Zhengxing Chen;Ren Wang;Ashok R. Patel