Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences, Oil Crops and Lipids Process Technology National & Local Joint Engineering Laboratory, Key Laboratory of Oilseeds Processing, Ministry of Agriculture, Hubei Key Laboratory of Lipid Chemistry and Nutrition, Wuhan 430062, China.
Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology & Business University, Beijing 100048, China.
Carbohydr Polym. 2019 Apr 15;210:119-126. doi: 10.1016/j.carbpol.2019.01.035. Epub 2019 Jan 11.
Here we propose a wet-spinning assembly approach to continuously spin nanoTiO/chitosan (CS) nanocomposite fibers, which are used directly as absorbents to remove free fatty acids (FFA) from edible oils. The morphology of nanoTiO and nanoTiO/CS nanocomposite fibers was observed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM), respectively. The structure of the fibers was studied by Fourier transform infrared spectroscopy (FTIR), and wide angel X-ray diffractometry (WAXD). Moreover, the mechanical property, thermal stability, and antibacterial activity of the fibers were evaluated. These fibers were used for the deacidification of rice bran oil and the acid value of the oil was found decreased from 4.53 ± 0.15 to 1.07 ± 0.06 mg KOH/g within 5 h with a 10 wt % load at 50 ℃. The combination of wet-spinning technology and excellent performance of nanoTiO/CS nanocomposite fibers paves the way to eco-friendly and sustainable material for FFA removal.
在这里，我们提出了一种湿纺组件方法，可连续纺制纳米 TiO/壳聚糖（CS）纳米复合材料纤维，这些纤维可直接用作吸附剂，从食用油中去除游离脂肪酸（FFA）。通过透射电子显微镜（TEM）和扫描电子显微镜（SEM）分别观察纳米 TiO 和纳米 TiO/CS 纳米复合材料纤维的形态。通过傅里叶变换红外光谱（FTIR）和广角 X 射线衍射（WAXD）研究了纤维的结构。此外，还评估了纤维的机械性能、热稳定性和抗菌活性。这些纤维被用于米糠油的脱酸，在 50℃下，10wt%负载量下，油的酸值在 5 小时内从 4.53±0.15 降至 1.07±0.06mg KOH/g。湿纺技术与纳米 TiO/CS 纳米复合材料纤维的优异性能相结合，为 FFA 去除开辟了一条环保、可持续的材料之路。
