孟校宇.L-抗坏血酸棕榈酸酯对椰子油结晶行为的影响[J].中国油脂,2020,45(11):40~45.[MENG Xiaoyu.Effect of L-ascorbyl palmitate on the crystallization behavior of coconut oil[J].China Oils and Fats,2020,45(11):40~45.]
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
  
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)
作者单位
孟校宇 江南大学 食品学院,食品科学与技术国家重点实验室,江苏 无锡214122 
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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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