金属有机骨架在植物油精制中的应用。
Application of metal-organic frameworks for purification of vegetable oils.
机构信息
State University of Chemistry and Technology, Sheremetevsky str., 7, 153000 Ivanovo, Russia.
State University of Chemistry and Technology, Sheremetevsky str., 7, 153000 Ivanovo, Russia.
出版信息
Food Chem. 2016 Jan 1;190:103-109. doi: 10.1016/j.foodchem.2015.05.078. Epub 2015 May 18.
Reported here is the synthesis of aluminum-, zinc- and titanium-containing metal-organic frameworks based on terephthalic acid and an investigation on the possibility of using these compounds as adsorbents for the purification of unrefined vegetable oils. It is found that aluminum-, zinc- and titanium-containing metal-organic frameworks improve the physicochemical properties of unrefined vegetable oils (more pleasant taste and odor) due to the binding of free fatty acids and peroxide compounds. It is established that the synthesized materials are more effective in these respects as compared with traditional adsorbents. An adsorption mechanism of free fatty acids and peroxides is proposed. Last but not least, the used MOF can be easily recycled at least five times, via solvent washing.
本文报道了基于对苯二甲酸的含铝、锌和钛的金属有机骨架的合成，并研究了这些化合物作为未精炼植物油精制吸附剂的可能性。结果表明，含铝、锌和钛的金属有机骨架通过结合游离脂肪酸和过氧化物化合物，改善了未精炼植物油的物理化学性质（口感和气味更佳）。结果表明，与传统吸附剂相比，合成材料在这些方面更有效。提出了游离脂肪酸和过氧化物的吸附机理。最后但同样重要的是，通过溶剂洗涤，用过的 MOF 至少可以回收 5 次。
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