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- W41364553 abstract "Abstract Certain smectites can effectively adsorb aflatoxin B 1 but the interaction between the toxin and smectites is still poorly understood. The objective of this study was to computationally evaluate the bonding mechanism between aflatoxin B 1 and smectite. Geometry optimization, net atomic charge distribution, vibration frequency and vibration intensity computations were performed for aflatoxin B 1 and cation–aflatoxin B 1 complexes. Molecular dynamics simulation was conducted for moist and dehydrated aflatoxin B 1 –Na–smectite complexes. The computed energies, net atomic charge distribution, and molecular dynamics simulations consistently revealed that the two carbonyl oxygen were the most important interacting sites with exchange cations and H 2 O in smectite interlayer. The two dihydrofuran oxygen had much less contribution to the bonding. Substantial charge redistribution and bond length changes occurred when cation–aflatoxin B 1 complexes formed. The computed vibration frequency shifts and vibration intensity changes were in excellent agreement with experimental observations reported in the literature. The calculations confirmed the importance of carbonyl groups in the bonding of aflatoxin to smectite and revealed more subtle interactions between exchange cations and the dihydrofuran oxygen." @default.
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- W41364553 date "2011-11-01" @default.
- W41364553 modified "2023-10-17" @default.
- W41364553 title "Computational evaluation of bonding between aflatoxin B1 and smectite" @default.
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- W41364553 doi "https://doi.org/10.1016/j.clay.2011.07.007" @default.
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