以火龙果果皮为原料,采用单因素实验和响应面实验优化化学法提取火龙果果皮可溶性膳食纤维的提取工艺。结果表明:化学法提取火龙果果皮可溶性膳食纤维的最佳工艺条件为:提取温度79.20℃,柠檬酸质量分数2.9%,料液比1∶13.62,提取时间120.10 min,提取率为14.07%。

The chemical extraction of soluble dietary fiber( SDF) from Pitaya Peel was studied by single factor experiment and response surface methodology. The results indicated that the optimal conditions of extracting SDF from Pitaya Peel were as follows: the extraction temperature was 79. 20 ℃,Citric acid concentration was 2. 9%,solid to liquid ratio 1∶ 13. 62,the extraction time was 120. 10 min,SDF yield was 14. 07%.