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Physicochemical properties of milk protein ingredients and their acid gelation behaviour in different ionic environments

机译:不同离子环境中牛奶蛋白成分及其酸凝胶行为的物理化学性质

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摘要

Dispersions of whey protein isolate (WPI), microparticulated whey protein (MWP), nanoparticulated whey protein (NWP) and micellar casein isolate (MCI) were characterised in terms of protein denaturation and particle size. WPI exhibited high native whey protein content, while MWP and NWP showed low native whey protein content. The acid gelation behaviour of milk protein ingredients and mixtures thereof (5% protein) in different ionic environments (deionised water, whey permeate and dialysed against skimmed milk) was also investigated. The gelation curves of NWP showed no significant difference for in the three different ionic environments, and high gel strength after acidification was observed. WPI, MWP and MCI dispersed in deionised water gelled faster than in the other two ionic environments. MCI in whey permeate showed slower gelation and lower G' than their dialysed samples. (C) 2018 Elsevier Ltd. All rights reserved.
机译:乳清蛋白分离物(WPI),微粒乳清蛋白(MWP),纳米颗粒乳清蛋白(NWP)和胶束酪蛋白分离物(MCI)的分散在蛋白质变性和粒度方面表征。 WPI表现出高原生乳清蛋白质含量,而MWP和NWP显示出低天然乳清蛋白质含量。 还研究了牛奶蛋白成分及其混合物(5%蛋白)在不同离子环境中的酸凝胶凝胶化行为(去离子水,乳清和透析与脱脂乳)。 NWP的凝胶化曲线对于三种不同的离子环境没有显着差异,并且观察到酸化后的高凝胶强度。 WPI,MWP和MCI分散在去离子水中的速度比其他两个离子环境更快。 MCI乳清渗透显示较慢的凝胶化和低于透析样品。 (c)2018年elestvier有限公司保留所有权利。

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  • 来源
    《International Dairy Journal》 |2018年第2018期|共5页
  • 作者单位

    Univ Copenhagen Sect Ingredients &

    Dairy Technol Dept Food Sci Rolighedsvej 26 DK-1958 Frederiksberg C Denmark;

    Arla Foods Ingredients Grp PS Sonderupvej 26 DK-6920 Videbaek Denmark;

    Arla Foods Ingredients Grp PS Sonderupvej 26 DK-6920 Videbaek Denmark;

    Univ Copenhagen Sect Ingredients &

    Dairy Technol Dept Food Sci Rolighedsvej 26 DK-1958 Frederiksberg C Denmark;

    Univ Copenhagen Sect Ingredients &

    Dairy Technol Dept Food Sci Rolighedsvej 26 DK-1958 Frederiksberg C Denmark;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 乳品加工工业;
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