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Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
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大豆蛋白分离物-奇托桑复合凝结物:相位行为,结构和功能性质.

Xiongzhi Li1,2, Chun Hu1,2, Hailong Zhang1,2

  • 1Key Laboratory for Deep Processing of Major Grain and Oil, Ministry of Education, Hubei Key Laboratory for Processing and Transformation of Agricultural Products, Wuhan Polytechnic University, Wuhan 430023, China.

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概括

豆蛋白分离物 (SPI) 和酸盐 (CS) 通过结合,疏水性和静电相互作用形成复合体. 这些相互作用影响着复杂的复杂.

关键词:
基托桑是一种酸盐.功能性质 功能性质 功能性质相互作用机制 相互作用机制这是一种大豆蛋白分离物.频谱学是一种光谱学.结构 结构 是一个结构.

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科学领域:

  • 食品科学 食品科学 食品科学
  • 生物聚合物相互作用
  • 蛋白质化学 蛋白质化学

背景情况:

  • 豆蛋白分离物 (SPI) 和酸盐 (CS) 是食品工业中广泛使用的生物聚合物.
  • 了解它们的相互作用对于开发新型食品成分和改善产品功能至关重要.

研究的目的:

  • 调查SPI和CS之间的相互作用机制.
  • 描述SPI/CS复合体的结构和功能性质.
  • 为食品工业中SPI/CS复合物的应用提供见解.

主要方法:

  • 在不同条件下 (度,NaCl,pH) 进行复杂形成分析.
  • 溶解性,乳化和发泡性质的评估.
  • 使用评估三级结构和结晶性的技术进行结构分析.

主要成果:

  • 结合和性相互作用驱动可溶性SPI/CS复合体的形成.
  • 静电相互作用是不可溶性复合物形成的关键.
  • 不溶性复合体的形成受到较高的SPI/CS总度和较低的NaCl度的支持.
  • 添加CS降低了SPI的溶解度和乳化/发泡特性,这些特性随着pH值的增加 (3-9) 得到改善.
  • CS改变了SPI的三级结构,增加了结晶性,导致氨基群的红色转移,并导致更密集的表面结构.

结论:

  • 该研究阐明了可溶性和不可溶性SPI/CS复合物的独特相互作用机制.
  • 复杂的形成显著影响SPI的功能性质和结构.
  • 这些发现支持SPI/CS复合物的潜力,作为食品应用中的功能成分.