State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China.
State Key Laboratory of Marine Food Processing and Safety Control, Dalian Polytechnic University, Dalian 116034, China; National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, China.
Food Chem. 2024 Jun 15;443:138561. doi: 10.1016/j.foodchem.2024.138561. Epub 2024 Jan 26.
In our study, ammoniated hollow mesoporous silica nanoparticles (NH-HMSN) with uniform diameter and stable structure were successively prepared via SiO core hard template method. Fourier transformed infrared spectroscopy revealed that amino group was effectively modified. Adsorption experiments showed that adsorption capacity of NH-HMSN towards free fatty acids (FFAs) was superior to aminated mesopores or silica microspheres. Following through optimization of extraction conditions, FFAs from edible oil samples were successfully gathered by NH-HMSN and showed favorable linearities (0.2-90 μg g), remarkably low limit of detections (0.03-0.15 nmol g), acceptable recoveries (85.08-96.82 %) and relatively accurate precisions (1.64-4.99 %). In comparison to existing adsorbent, NH-HMSN could be successfully prepared via the chemical reaction of common raw materials under normal pressure and temperature. Furthermore, NH-HMSN with hollow and mesoporous structure was more effective than the current adsorbents aimed at FFAs analysis in aspect of surface area and adsorption capacity.
在我们的研究中，通过 SiO2 核硬模板法成功制备了具有均匀直径和稳定结构的氨化中空介孔硅纳米粒子（NH-HMSN）。傅里叶变换红外光谱显示氨基被有效修饰。吸附实验表明，NH-HMSN 对游离脂肪酸（FFAs）的吸附容量优于氨基介孔或硅微球。通过优化萃取条件，NH-HMSN 成功地从食用油样品中收集了 FFAs，并表现出良好的线性（0.2-90μg g）、显著低的检测限（0.03-0.15 nmol g）、可接受的回收率（85.08-96.82%）和相对准确的精密度（1.64-4.99%）。与现有吸附剂相比，NH-HMSN 可以通过普通原料在常压和温度下的化学反应成功制备。此外，NH-HMSN 具有中空和介孔结构，在表面积和吸附容量方面比目前针对 FFAs 分析的吸附剂更有效。
