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Chitosan preparations with improved fat-binding capacity

机译：壳聚糖制剂改善脂肪结合能力

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摘要

Chitosan is a polycationic polysaccharide with good health and nutritional benefits. This study investigated the effect of chitosan properties, such as, biopolymer structure, viscometric molar mass (M-v), and degree of deacetylation (DD), on the fat-binding capacity between five chitosan preparations (different origins and characteristics) and three types of fat (soybean oil, margarine, and pork lard). The in vitro fat-binding tests were performed with soybean oil under different pH to simulate the digestion process in the gastrointestinal tract, followed by tests at constant pH (duodenal pH = 6.8) with three types of fat. Shrimp shell nanochitosan had an average hydrodynamic diameter of 62 nm, while that of shrimp shell chitosan and commercial chitosans (CC1, CC2, and CC3) ranged between 1090 and 1405 nm (determined by DLS). The M-v of chitosan varied between 18 and 260 kDa, and the DD ranged from 62% to 92%. Chitosan with medium M-v and high DD presented better results of fat-binding capacity in the duodenal pH with soybean oil. This study provides insights into the mechanisms of fat-binding capacity and its correlation with physicochemical properties of chitosan, pH, and type of fat, allowing the production of chitosan-based products with improved fat-binding capacity for several applications.
机译：壳聚糖是一种多阳离子多糖，具有良好的保健和营养价值。本研究考察了壳聚糖性质，如生物聚合物结构、粘度摩尔质量（M-v）和脱乙酰度（DD）对五种壳聚糖制剂（不同来源和特性）与三种脂肪（大豆油、人造黄油和猪油）之间脂肪结合能力的影响。体外脂肪结合试验在不同pH值下用大豆油进行，以模拟胃肠道中的消化过程，然后在恒定pH（十二指肠pH=6.8）下用三种类型的脂肪进行试验。虾壳纳米壳聚糖的平均流体动力学直径为62nm，而虾壳壳壳聚糖和商用壳聚糖（CC1、CC2和CC3）的平均流体动力学直径在1090和1405nm之间（由DLS测定）。壳聚糖的M-v在18-260kDa之间变化，DD在62%-92%之间。中等M-v和高DD的壳聚糖在十二指肠pH值和大豆油中表现出更好的脂肪结合能力。这项研究深入了解了脂肪结合能力的机制及其与壳聚糖的物理化学性质、pH值和脂肪类型的相关性，使壳聚糖基产品的生产具有更好的脂肪结合能力，可用于多种应用。

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  • 来源
    《Journal of Applied Polymer Science》 |2021年第34期|共15页
  • 作者

    Silva Felipe B.; Gasparrini Lazaro J.; Cremonez Paulo A.; Burin Glaucia R. M.; Machado Bruna; Polinarski Marcos A.; Arantes Mabel K.; Alves Helton J.;

  • 作者单位

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

    Fed Univ Paran UFPR Dept Engn &

    Exact Sci Lab Mat &

    Renewable Energy LABMATER Rua Pioneiro 2153 BR-85950000 Jardim Dallas Palotina Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    bioactive compounds; biopolymers; degree of deacetylation; functional products; viscometric molar mass;

    机译：生物活性化合物;生物聚合物;脱乙酰化程度;功能产品;粘度摩尔质量;

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