考察油的微量成分和脂肪酸组成对蜂蜡和硬脂酸基油凝胶性能的影响。
Investigation of the influence of minor components and fatty acid profile of oil on properties of beeswax and stearic acid-based oleogels.
机构信息
School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia; Department of Agricultural Chemistry, Faculty of Agriculture, University of Jaffna, Kilinochchi 44000, Sri Lanka(1); Postgraduate Institute of Agriculture, University of Peradeniya, Peradeniya 20400, Sri Lanka.
School of Civil and Environmental Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia.
出版信息
Food Res Int. 2024 May;184:114213. doi: 10.1016/j.foodres.2024.114213. Epub 2024 Mar 13.
Understanding the impact of minor components and the fatty acid profile of oil on oleogel properties is essential for optimizing their characteristics. Considering the scarcity of literature addressing this aspect, this study aimed to explore the correlation between these factors and the properties of beeswax and stearic acid-based oleogels derived from rice bran oil and sesame oil. Minor oil components were modified by stripping the oil, heating the oil with water, and adding β-sitosterol. Oleogels were then prepared using a mixture of beeswax and stearic acid (3:1, w/w) at a concentration of 11.74 % (w/w). The properties of oils and oleogels were evaluated. The findings indicated that minor components and fatty acid composition of the oils substantially influence the oleogel properties. Removing minor components by stripping resulted in smaller and less uniformly distributed crystals and less oil binding capacity compared to the oleogels prepared from untreated oils. A moderate amount of minor components exhibited a significant influence on oleogel properties. The addition of β-sitosterol did not show any influence on oleogel properties except for the oleogel made from untreated oil blend added with β-sitosterol which had more uniform crystals in the microstructure and demonstrated better rheological stability when stored at 5 °C for two months. The oil composition did not show any influence on the thermal and molecular properties of oleogels. Consequently, the oleogel formulation derived from the untreated oil blend enriched with β-sitosterol was identified as the optimal formula for subsequent development. The findings of this study suggest that the physical and mechanical properties as well as the oxidative stability of beeswax and stearic acid-based oleogels are significantly affected by the minor constituents and fatty acid composition of the oil. Moreover, it demonstrates that the properties of oleogels can be tailored by modifying oil composition by blending different oils.
了解微量成分和油的脂肪酸组成对油凝胶性能的影响对于优化其特性至关重要。考虑到文献中很少有涉及这方面的内容,本研究旨在探讨这些因素与米糠油和芝麻油衍生的蜂蜡和硬脂酸基油凝胶的特性之间的相关性。通过提取油、油加水加热和添加 β-谷甾醇来修饰微量油成分。然后使用蜂蜡和硬脂酸(3:1,w/w)混合物在 11.74%(w/w)的浓度下制备油凝胶。评估了油和油凝胶的性质。结果表明,微量成分和油的脂肪酸组成对油凝胶的性质有很大影响。与未处理的油制备的油凝胶相比,通过提取去除微量成分会导致晶体更小且分布不均匀,并且油结合能力降低。适量的微量成分对油凝胶的性质有显著影响。添加 β-谷甾醇除了对未处理的油混合物添加 β-谷甾醇的油凝胶没有任何影响外,对油凝胶的性质没有任何影响,该油凝胶的微观结构中的晶体更均匀,在 5°C 下储存两个月时表现出更好的流变稳定性。油的组成对油凝胶的热和分子性质没有任何影响。因此,确定未处理的油混合物中富含 β-谷甾醇的油凝胶配方是随后开发的最佳配方。本研究的结果表明,蜂蜡和硬脂酸基油凝胶的物理和机械性能以及氧化稳定性受到油的微量成分和脂肪酸组成的显著影响。此外,它表明通过混合不同的油来修饰油的组成,可以调整油凝胶的性质。