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| L-抗坏血酸棕榈酸酯对椰子油结晶行为的影响 |
| Effect of L-ascorbyl palmitate on the crystallization behavior of coconut oil |
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| DOI：10.12166/j.zgyz.1003-7969/2020.11.009 |
| 中文关键词: 椰子油 L-抗坏血酸棕榈酸酯 结晶动力学 晶型 晶体形态 |
| 英文关键词:coconut oil L-ascorbyl palmitate crystallization kinetics crystal form crystal morphology |
| 基金项目:山东省泰山产业领军人才创新类项目(LJNY2015007)；国家自然科学基金（31671786) |
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| 中文摘要: |
| 以椰子油作为模型，利用结晶动力学方程、X-射线衍射（XRD）分析、热力学分析以及偏振光显微镜（PLM）观察等方法研究了L-抗坏血酸棕榈酸酯（L-AP）对椰子油结晶行为的影响。结果表明：L-AP提高了椰子油的结晶速率，改变了晶体成核和生长机制；L-AP以“晶种”的方式诱导椰子油的结晶，对其结晶过程产生了促进作用； L-AP没有改变椰子油晶体的晶型以及堆积方式，却增加了晶体纳米片层的厚度；随着L-AP添加量的增加，晶体结构更加致密有序。 |
| 英文摘要: |
| Coconut oil was used as a model, and the effect of L-ascorbyl(L-AP) on the crystallization behavior of coconut oil was studied by crystallization kinetics equation, X-ray diffraction (XRD), thermodynamic analysis and polarized light microscopy (PLM). The results showed that L-AP increased the crystallization rate of coconut oil and changed the mechanism of nucleation and growth. Moreover, L-AP induced the crystallization as a "seed effect" and promoted the crystallization process of coconut oil. No significant changes were found in the crystal packing mode and crystal form with the addition of L-AP. However, L-AP increased the thickness of the crystal nanosheets. Furthermore, coconut oil presented more ordered the crystal structure as the increase of the dosage of L-AP. |
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