Visualized phase behavior of binary blends of coconut oil and palm stearin
Visualized phase behavior of binary blends of coconut oil and palm stearin
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椰子油和棕榈硬脂二元混合物的可视化相行为
DOI：
10.1016/j.foodchem.2018.05.118
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发表时间：
2018-11-15
期刊：
影响因子：
8.8
通讯作者：
Liu, Yuanfa
中科院分区：
文献类型：
--
作者：
Liu, Chunhuan;Meng, Zong;Liu, Yuanfa
采用脉冲核磁共振（p-NMR）、差示扫描量热法（DSC）和X射线散射（XRD）等方法研究了椰子油（CNO）和棕榈硬脂（POs）梯度共混物的相行为。动力学相图与DSC数据拟合良好（R > 0.95），表明hoc-POs二元共混物表现出单组分行为。当PO的添加量为10- 60%时，HOC-POs二元体系呈现出不混溶的固态结构（β和β '多晶型），当PO的添加量超过10- 60%时，HOC-POs二元体系呈现出混溶的固态结构（β多晶型）。此外，PO的存在可以提高液相转变温度，并将β '多晶型转变为β。这些相行为的变化反映在二元共混物的形态。本研究结果不仅拓宽了CNO和POs的应用领域，而且为高品质非氢化脂肪产品的生产提供了指导。
The graded blends of coconut oil (CNO) and palm stearin (POs) phase behavior was studied in the present work, by using pulsed nuclear magnetic resonance (p-NMR), differential scanning calorimetry (DSC) and X-ray scattering (XRD). The kinetic phase diagram which was fitting to DSC data by polynomial equation (R > 0.95), indicated that the CNO-POs binary blends displayed monotectic behavior. The CNO-POs binary system displayed immiscible solid structures (beta and beta' polymorphism) with the addition of POs in the range of 10-60%, beyond which it showed miscible solid structures (beta polymorphism), respectively. Moreover, the presence of POs could elevate the liquid phase transition temperature and transform beta' polymorph into beta. These variations in phase behavior were reflected in the morphology of the binary blends. Our findings not only broaden the application of CNO and POs with novel attributes, but also direct the production of high quality non-hydrogenated fat-containing products.