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Influence of tea polyphenol and bovine serum albumin on tea cream formation by multiple spectroscopy methods and molecular docking

机译:茶多酚和牛血清白蛋白对多光谱法和分子对接的茶叶血清白蛋白对茶叶形成的影响

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摘要

The sensory qualities and shelf life of tea beverage strongly affected by tea cream that forms by the interaction of polyphenols and protein. The study aimed to investigate the effects of the interactions between tea polyphenols (TPs) and bovine serum albumin (BSA) on tea cream formation at different concentrations. The tea cream formation increased with TPs and BSA concentration increased. The optimal concentration (TPs: 800 mg/L, BSA: 40 mg/L), for high clarities and contents of phytochemicals, was selected by the technique for order preference by similarity to ideal solution (C = 0.7572). The interaction mechanism of TPs-BSA was investigated by fluorescence spectroscopy, UV-visible absorption spectroscopy, synchronous fluorescence spectroscopy, and molecular docking. TPs interacted with BSA via static quenching process, affecting tryptophan and tyrosine residue microenvironment of BSA. Ester catechins had more binding affinity than non-ester catechins. Hydrogen bonds were the main interaction forces of TPs-BSA.
机译:茶叶饮料的感官素质和保质期受到多酚和蛋白质的相互作用形成的茶叶。该研究旨在探讨茶多酚(TPS)和牛血清白蛋白(BSA)对不同浓度茶奶油形成的相互作用的影响。茶叶形成随TPS和BSA浓度增加。通过相似性与理想解决方案的顺序优先选择,选择最佳浓度(TPS:800mg / L,BSA:40mg / L),用于使得顺序偏好的技术选择(C = 0.7572)。通过荧光光谱,UV可见吸收光谱,同步荧光光谱和分子对接研究了TPS-BSA的相互作用机理。 TP通过静态猝灭过程与BSA相互作用,影响BSA的色氨酸和酪氨酸残基微环境。酯类儿茶素与非酯类儿科的亲和力具有更多的结合亲和力。氢键是TPS-BSA的主要相互作用力。

著录项

  • 来源
    《Food Chemistry》 |2020年第15期|127432.1-127432.9|共9页
  • 作者单位

    Southwest Univ Coll Food Sci 2 Tiansheng Rd Chongqing 400715 Peoples R China;

    Southwest Univ Sch Mat & Energy 2 Tiansheng Rd Chongqing 400715 Peoples R China;

    Southwest Univ Coll Food Sci 2 Tiansheng Rd Chongqing 400715 Peoples R China|Southwest Univ Tea Res Inst 2 Tiansheng Rd Chongqing 400715 Peoples R China;

    Chongqing Acad Agr Sci Tea Res Inst Chongqing 402160 Peoples R China;

    Xianning Acad Agr Sci 168 Hesheng Rd Xianning Dist 437100 Hubei Peoples R China;

    Southwest Univ Sch Mat & Energy 2 Tiansheng Rd Chongqing 400715 Peoples R China;

    Southwest Univ Coll Food Sci 2 Tiansheng Rd Chongqing 400715 Peoples R China|Southwest Univ Tea Res Inst 2 Tiansheng Rd Chongqing 400715 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Tea polyphenols; Interaction; TOPSIS; Fluorescence spectroscopy; Molecular docking;

    机译:茶多酚;相互作用;TOPSIS;荧光光谱;分子对接;

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