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首页> 外文期刊>Journal of Food Science >Biopolymer Nanoparticles from Heat-Treated Electrostatic Protein-Polysaccharide Complexes: Factors Affecting Particle Characteristics
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Biopolymer Nanoparticles from Heat-Treated Electrostatic Protein-Polysaccharide Complexes: Factors Affecting Particle Characteristics

机译:热处理静电蛋白质-多糖复合物的生物聚合物纳米粒子:影响粒子特性的因素。

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摘要

Biopolymer nanoparticles can be formed by heating globular protein-ionic polysaccharide electrostatic complexes above the thermal denaturation temperature of the protein. This study examined how the size and concentration of biopolymer particles formed by heating β-lactoglobulin-pectin complexes could be manipulated by controlling preparation conditions: pH, ionic strength, protein concentration, holding time, and holding temperature. Biopolymer particle size and concentration increased with increasing holding time (0 to 30 min), decreasing holding temperature (90 to 70 ℃), increasing protein concentration (0 to 2 wt/wt%), increasing pH (4.5 to 5), and increasing salt concentration (0 to 50 mol/kg). The influence of these factors on biopolymer particle size was attributed to their impact on protein-polysaccharide interactions, and on the kinetics of nucleation and particle growth. The knowledge gained from this study will facilitate the rational design of biopolymer particles with specific physico-chemical and functional attributes.
机译:通过将球状蛋白质-离子多糖静电复合物加热到蛋白质的热变性温度以上,可以形成生物聚合物纳米粒子。这项研究探讨了如何通过控制制备条件来控制通过加热β-乳球蛋白-果胶复合物形成的生物聚合物颗粒的大小和浓度:pH,离子强度,蛋白质浓度,保持时间和保持温度。生物聚合物的粒径和浓度随保温时间(0至30分钟)的增加,保温温度的降低(90至70℃),蛋白质浓度的增加(0至2 wt / wt%),pH值(4.5至5)和增加而增加。盐浓度(0至50 mol / kg)。这些因素对生物聚合物粒径的影响归因于它们对蛋白质-多糖相互作用以及成核动力学和颗粒生长的影响。从这项研究中获得的知识将有助于合理设计具有特定理化和功能属性的生物聚合物颗粒。

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