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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Electrically Switchable Nanolever Technology for the Screening of Metal-Chelating Peptides in Hydrolysates
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Electrically Switchable Nanolever Technology for the Screening of Metal-Chelating Peptides in Hydrolysates

机译：Electrically Switchable Nanolever Technology for the Screening of Metal-Chelating Peptides in Hydrolysates

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摘要

Metal-chelating peptides (MCP) are considered as indirect antioxidants due to their capacity to inhibit radical chain reaction and oxidation. Here, we propose a new proof of concept for the screening of MCPs present in protein hydrolysates for valorizing their antioxidant properties by using the emerging time-resolved molecular dynamics technology, switchSENSE. This method unveils possible interactions between MCPs and immobilized nickel ions using fluorescence and electro-switchable DNA chips. The switchSENSE method was first set up on synthetic peptides known for their metal-chelating properties. Then, it was applied to soy and tilapia viscera protein hydrolysates. Their Cu2+-chelation capacity was, in addition, determined by UV-visible spectrophotometry as a reference method. The switchSENSE method has displayed a high sensitivity to evidence the presence of MCPs in both hydrolysates. Hence, we demonstrate for the first time that this newly introduced technology is a convenient methodology to screen protein hydrolysates in order to determine the presence of MCPs before launching time-consuming separations.

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