School of Food Science and Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei, Anhui 230009, PR China.
Dapartment of Pharmacology, Anhui Medical University, 81 Meishan Road, Hefei, Anhui 230032, PR China.
Carbohydr Polym. 2016 Oct 20;151:381-391. doi: 10.1016/j.carbpol.2016.05.085. Epub 2016 May 24.
In this study, response surface methodology (RSM) was employed to optimize microwave-assisted extraction (MAE) technology of mucilage polysaccharide from the peel of Opuntia dillenii haw. fruits (OFPP), and the physicochemical characteristics of OFPP were also investigated. The three parameters were the ratio of water to raw material (30-40ml/g), microwave power (300-400W) and extraction time (120-180s). The results indicated that the yield of OFPP was 15.62±0.37% under the optimum extraction conditions. Compared with MAE, the OFPP yield by hot water extraction (HWE) was 13.36±0.71%. In addition, the rheological properties of OFPP were also explored. The OFPP obtained by HWE exhibited a lower viscosity compared with that by MAE. The FT-IR spectra analysis, scanning electron microscopy (SEM) observation and thermogravimetric analysis (TGA) revealed that there were strong interactions between Ca(2+) and OFPP, which resulted in the high viscosity, different microstructure and thermal stability of OFPP.
在这项研究中，响应面法（RSM）被用于优化从仙人掌果实（Opuntia dillenii haw.）皮中提取黏液多糖的微波辅助提取（MAE）技术，并研究了 OFPP 的理化特性。这三个参数是水与原料的比例（30-40ml/g）、微波功率（300-400W）和提取时间（120-180s）。结果表明，在最佳提取条件下，OFPP 的产率为 15.62±0.37%。与 MAE 相比，热水提取（HWE）的 OFPP 产率为 13.36±0.71%。此外，还探索了 OFPP 的流变性能。HWE 得到的 OFPP 的粘度比 MAE 得到的 OFPP 的粘度低。傅里叶变换红外光谱（FT-IR）分析、扫描电子显微镜（SEM）观察和热重分析（TGA）表明，Ca(2+)与 OFPP 之间存在强烈的相互作用，导致 OFPP 具有较高的粘度、不同的微观结构和热稳定性。
