Longping Branch Graduate School, Central South University, Changsha 410125, China; Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; International Joint Laboratory on Fruits & Vegetables Processing and Quality Safety, Changsha 410125, China.
Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China; Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
Food Chem. 2019 Jul 15;286:1-7. doi: 10.1016/j.foodchem.2019.01.200. Epub 2019 Feb 8.
Surfactant and microwave assisted extraction (S-MAE) was used for pectin extraction from orange peel. First, we optimized the conditions of microwave assisted extraction (MAE), e.g., irradiation time, liquid-to-solid ratio (LSR), and pH on pectin yield (PY), galacturonic acid (GA) content, and degree of esterification (DE) using a Box-Behnken design. Under optimal conditions (pH 1.2, 7.0 min, and 21.5 v/w LSR), we obtained a PY of 28.0 ± 0.5%, which was close to the predicted value (31.1%). Second, we analyzed the effect of surfactant on microwave extraction of pectin. Among the surfactants investigated, Tween-80 (8 g/L, w/v) increased PY by 17.0%. Compared with conventional solvent extraction, S-MAE is a novel and efficient method for pectin extraction, which generated a higher (p < 0.05) PY (32.8%), GA content (78.1%), DE (69.8%), and M (286.3 kDa).
表面活性剂和微波辅助提取 (S-MAE) 用于从橙皮中提取果胶。首先，我们使用 Box-Behnken 设计优化了微波辅助提取 (MAE) 的条件，例如辐射时间、液固比 (LSR) 和 pH 对果胶得率 (PY)、半乳糖醛酸 (GA) 含量和酯化度 (DE) 的影响。在最佳条件下 (pH 1.2、7.0 分钟和 21.5 v/w LSR)，我们获得了 28.0 ± 0.5% 的 PY，接近预测值 (31.1%)。其次，我们分析了表面活性剂对微波提取果胶的影响。在所研究的表面活性剂中，Tween-80（8 g/L，w/v）将 PY 提高了 17.0%。与传统溶剂提取相比，S-MAE 是一种新颖且高效的果胶提取方法，可产生更高的 (p < 0.05) PY (32.8%)、GA 含量 (78.1%)、DE (69.8%) 和 M (286.3 kDa)。
