Preparation, Structural Characterization, and Biological Activity of Selenated Potato Resistant Starch

Preparation, Structural Characterization, and Biological Activity of Selenated Potato Resistant Starch

This study develops selenized potato resistant starch (P‐RS4·Se) from Enshi potato starch to enhance bioactivity. First, the resistant starch (P‐RS4) is prepared through high‐temperature citric acid esterification. Then, P‐RS4 is selenized using the nitrate‐sodium selenite method and analyzed with S...

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Veröffentlicht in:Starch - Stärke 2024-11
Hauptverfasser: Huang, Xiufang, Dou, Lei, Xiong, Kun, Zhang, Shiyi, He, Huahan, Wang, Shanshan, Luo, Kai, Hu, Dongqiang
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container_title Starch - Stärke
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creator Huang, Xiufang
Dou, Lei
Xiong, Kun
Zhang, Shiyi
He, Huahan
Wang, Shanshan
Luo, Kai
Hu, Dongqiang
description This study develops selenized potato resistant starch (P‐RS4·Se) from Enshi potato starch to enhance bioactivity. First, the resistant starch (P‐RS4) is prepared through high‐temperature citric acid esterification. Then, P‐RS4 is selenized using the nitrate‐sodium selenite method and analyzed with Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X‐ray Photoelectron Spectroscopy (XPS), and Nuclear Magnetic Resonance (NMR). Optimal conditions are identified: 0.7 % HNO 3 , a 1:1.1 ratio of P‐RS4 to Na 2 SeO 3 , 65 °C, and 4 h. Selenization disrupts P‐RS4·Se’s microstructure, forming a Se─O─C bond with ─OH on C6. The selenized starch shows strong in vitro antioxidant effects, protecting A549 lung cancer cells from oxidative damage at 6–8 mg mL −1 , supporting selenium supplementation.
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title Preparation, Structural Characterization, and Biological Activity of Selenated Potato Resistant Starch
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