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Optimising water activity for storage of high lipid and high protein infant formula milk powder using multivariate analysis

机译：使用多变量分析优化储存高脂质和高蛋白质婴儿配方奶粉的水活性

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摘要

High lipid and high protein infant formula milk powders were stored at water activity of 0.11, 0.33 and 0.53 for up to fourteen weeks at 40 degrees C to investigate the effect of storage water activity on physicochemical properties and formation of volatiles to thereby recommend optimal storage water activity conditions. Water activity of the powders was determined during storage together with surface colour, glass transition temperature combined with dynamic headspace sampling followed by gas chromatography/mass spectrometry. The principal component analysis (PCA) showed that the optimal water activity for storage of high lipid infant formula milk powder, for which lipid oxidation was found to be the critical quality parameter, is a(w) = 0.33 with lowest lipid oxidation, while for high protein infant formula milk powder, for which protein degradation was found to be the critical quality parameter, a(w) = 0.11 is optimal to limit formation of Maillard reaction products. (C) 2019 Elsevier Ltd. All rights reserved.
机译：高脂质和高蛋白质婴儿配方奶粉在40摄氏度下储存在0.11,0.33和0.53的水活性下，以探讨储存水活性对物理化学性质的影响和挥发物的形成，从而推荐最佳储存水活动条件。在储存过程中，用表面颜色，玻璃化转变温度与动态顶部空间采样相结合，与气相色谱/质谱相结合，确定粉末的水活性。主要成分分析（PCA）显示，储存高脂质婴儿配方奶粉的最佳水活性，其中发现脂质氧化是临界质量参数，是（W）= 0.33，脂质氧化最低，而对于高蛋白质婴儿配方奶粉，发现蛋白质降解是临界质量参数，a（w）= 0.11是最佳的限制Maillard反应产物的形成。 （c）2019年elestvier有限公司保留所有权利。

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  • 来源
    《International Dairy Journal》 |2019年第2019期|共7页
  • 作者

    Cheng Hong; Erichsen Henriette; Soerensen John; Petersen Mikael Agerlin; Skibsted Leif H.;

  • 作者单位

    Hebei Univ Econ &

    Business Coll Biol Sci &

    Engn 47 Xuefu Rd Shijiazhuang 050061 Hebei Peoples R China;

    Univ Copenhagen Dept Food Sci Rolighedsvej 30 DK-1958 Frederiksberg C Denmark;

    Arla Foods Arta Foods R&

    D Rordrumvej 2 DK-8220 Brabrand Denmark;

    Univ Copenhagen Dept Food Sci Rolighedsvej 30 DK-1958 Frederiksberg C Denmark;

    Univ Copenhagen Dept Food Sci Rolighedsvej 30 DK-1958 Frederiksberg C Denmark;

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  • 正文语种 eng
  • 中图分类 乳品加工工业;
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