College of Grain Oil and Food Science, Henan University of Technology, Zhengzhou 450001, China.
Carbohydr Polym. 2013 Feb 15;92(2):1700-4. doi: 10.1016/j.carbpol.2012.11.014. Epub 2012 Nov 12.
This current work is concerned with the modification of sugar beet pulp (SBP) pectin assisted by pulsed electric filed (PEF) without solvent. Pectin-arachates with degree of esterification (DE) ranging from 49 to 84 were prepared in one-step modification. The results showed that the DE of pectin derivatives increased significantly with the PEF intensity from 18 to 30 kV cm((1) and total specific energy input from 124 to 345 J mL((1). Evidence of modification of pectin was provided by FT-IR, X-ray diffraction patterns and NMR spectra. Thermogravimetric investigation of modified pectin indicated a higher thermal stability than the untreated one. Results revealed that PEF technology is a promising method for industrial manufacture of pectin derivatives.
本研究致力于在无溶剂条件下利用脉冲电场（PEF）对糖甜菜渣果胶（SBP）进行修饰。一步法修饰可制备酯化度（DE）为 49 至 84 的果胶-阿拉伯半乳聚糖。结果表明，随着 PEF 强度从 18 至 30 kV/cm 和总比能输入从 124 至 345 J/mL 的增加，果胶衍生物的 DE 显著增加。FT-IR、X 射线衍射图谱和 NMR 光谱提供了果胶修饰的证据。改性果胶的热重分析表明其热稳定性高于未处理果胶。结果表明，PEF 技术是工业生产果胶衍生物的一种有前途的方法。
