| 钠基蒙脱石对菜籽油中磷脂的吸附行为研究 |
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| 引用本文： | 刘昌盛,杨湄,黄凤洪,周琦,郑畅.钠基蒙脱石对菜籽油中磷脂的吸附行为研究[J].中国油料作物学报,2013,35(1):97-101. |
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| 作者姓名： | 刘昌盛 杨湄 黄凤洪 周琦 郑畅 |
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| 作者单位： | 中国农业科学院油料作物研究所,农业部油料作物生物学与遗传育种重点实验室,油料脂质化学与营养湖北省重点实验室 |
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| 基金项目： | 国家油菜现代产业技术体系(nycytx-005);国家“十一五”科技支撑计划课题(2009BAD9B08);中国农业科学院油料作物研究所所长基金(1610172009002) |
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| 摘 要： | 为了解钠基蒙脱石（sodium montmorillonite, Na-MMT）在油脂脱胶过程中的吸附行为以及吸附机理，采用钠化方法将钙基蒙脱石制备成Na-MMT，并对其进行X射线衍射和热重分析；利用Na-MMT对菜籽油中的磷脂（phospholipids, PL）进行吸附，探讨PL在Na-MMT上的静态吸附平衡、吸附动力学和吸附热力学。结果表明，Na-MMT对PL的最大理论吸附量为833.3mg/g；Na-MMT对PL的吸附是属于优惠吸附,吸热且自发进行。Freundlich吸附模型能够较好地拟合其静态吸附行为；同时拟二级吸附动力学模型适用于描述Na-MMT吸附PL的动力学特性。
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| 关 键 词： | 蒙脱石 磷脂 菜籽油 脱胶 静态吸附平衡 吸附动力学 吸附热力学 |
Adsorption behavior of phospholipids from rapeseed oils by sodium montmorillonite |
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| LIU Chang-sheng,YANG Mei,HUANG Feng-hong,ZHOU Qi,ZHENG Chang.Adsorption behavior of phospholipids from rapeseed oils by sodium montmorillonite[J].Chinese Journal of Oil Crop Sciences,2013,35(1):97-101. |
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| Authors: | LIU Chang-sheng YANG Mei HUANG Feng-hong ZHOU Qi ZHENG Chang |
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| Institution: | (Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences,Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition,Wuhan 430062,China) |
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| Abstract: | Adsorption behavior of sodium montmorillonite (Na-MMT) was evaluated on degumming of rapeseed oils. Na-MMT was prepared with calcium montmorillonite by sodium-modification, and was analyzed with X-ray diffraction and thermal gravimetric. The static adsorption equilibrium, adsorption kinetics and thermodynamics of phospholipids (PL) on Na-MMT were also investigated. Results showed that the theoretical maximum adsorption of PL on Na-MMT was 833.3mg/g. The PL adsorption process was favorable, endothemic and spontaneous. Freundlich model fitted well to the adsorption isotherm, and pseudo-second order kinetics model described well on the PL adsorption kinetics |
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| Keywords: | Montmorillonite Phospholipids Rapeseed oil Degumming Equilibrium of static adsorption Adsorption kinetics Adsorption thermodynamics |
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