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| γ-谷维素/β-谷甾醇与单硬脂酸甘油酯复合凝胶油的制备及性能研究 |
| reparation and properties of compound oleogel with γ-oryzanol/ β-sitosterol and glyceryl monostearate |
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| DOI： |
| 中文关键词: 单硬脂酸甘油酯 γ-谷维素 β-谷甾醇 凝胶油 制备 性能 微观结构 |
| 英文关键词:glyceryl monostearate γ-oryzanol β-sitosterol oleogel preparation property microstructure |
| 基金项目:基金项目：国家重点研发计划项目（2017YFD0200706，2017 YFD0200701）；山东省本科高校教学改革研究项目（Z2016 M022）；山东农业大学研究生教育教学改革研究重点项目（YZD2018002）；山东省研究生导师指导能力提升项目（SDY Y18108） |
| Author Name | Affiliation | | MU Yifan1,2, TIAN Hongyu1, YU Xiaojing1, CHEN Qi1, ZHENG Shulin2,
ZHANG Xu1, LIU Zhiguang1,2 | 1.National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of
Resources and Environment, College of Food Science and Engineering, Shandong Agricultural University,
Taian 271018, Shandong, China
2.State Key Laboratory of Nutrition Resources Integrated Utilization,
Kingenta Ecological Engineering Group Co., Ltd., Linshu 276700, Shandong, China |
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| 中文摘要: |
| 以食用棕榈油为基料油，添加分子蒸馏单硬脂酸甘油酯与γ-谷维素/β-谷甾醇制备复合凝胶油。在单因素试验的基础上，应用响应面法优化复合凝胶油的制备条件。探讨凝胶剂比例对凝胶油性能及微观结构的影响，分析γ-谷维素/β-谷甾醇在复合凝胶油形成过程中的作用。结果表明：最优制备条件为复合凝胶剂添加量9.89%、复合凝胶剂中γ-谷维素/β-谷甾醇占比523%、γ-谷维素与β-谷甾醇质量比3∶ 2、加热时间41.7 min，在此条件下复合凝胶油持油性可达94.6%。γ-谷维素/β-谷甾醇的添加对复合凝胶油热力学性质、流变学性质和红外光谱特征均产生了较大影响。在复合凝胶油中γ-谷维素/β-谷甾醇与单硬脂酸甘油酯存在范德华力等弱的非氢键作用，使得单硬脂酸甘油酯和γ-谷维素/β-谷甾醇协同形成复合凝胶油。随着单硬脂酸甘油酯含量的增加，系统内氢键作用逐渐减小直至消失，微观结构由纤维网状先转换为球状结晶，最后为针状结晶。复合凝胶油的熔点和结晶点低于单一凝胶油，黏性和刚性较小。 |
| 英文摘要: |
| The compound oleogel was prepared by adding glyceryl monostearate obtained by molecular distillation and γ-oryzanol/β-sitosterol with edible palm oil as base oil. The preparation conditions were optimized by response surface methodology on the basis of single factor experiment. The effects of gel ratio on the properties and microstructure of oleogel were investigated to analyze the role of γ-oryzanol/β-sitosterol in the formation of oleogel. The results showed that the optimal preparation conditions were obtained as follows: dosage of compound gel 9.89%, proportion of γ-oryzanol/β-sitosterol 52.3%, mass ratio of γ-oryzanol to β-sitostero 3∶ 2 and heating time 41.7 min. Under these conditions, the oil holding capacity of compound oleogel could reach 946%. The addition of γ-oryzanol/β-sitosterol had a great influence on the thermodynamic properties, rheological properties and infrared spectrum characteristics of the compound oleogel. There was a weak non hydrogen bonding force between γ-oryzanol/β-sitosterol and glyceryl monostearate, such as Van Der Waals force, so that glyceryl monostearate and γ-oryzanol/β-sitosterol synergized to form compound oleogel. With the increase of glyceryl monostearate content, the hydrogen bond force in the system gradually decreased until it disappeared. The microstructure first converted from fiber network to globular crystal, and finally to needle crystal. The melting point and crystallization point of compound oleogel were lower than that of single oleogel, and the viscosity and rigidity were smaller. |
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