Optimization of Ultrasonic-Microwave Synergistic Extraction of Soluble Dietary Fiber from Seabuckthorn Peel Residue
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摘要: 采用超声波-微波协同法提取沙棘果皮渣中可溶性膳食纤维的工艺条件。通过单因素实验研究柠檬酸质量分数、料液比、微波功率、提取时间对沙棘果皮渣中可溶性膳食纤维提取得率的影响,进一步用Box-Behnken法优化沙棘果皮渣中可溶性膳食纤维最佳提取工艺。结果表明,在柠檬酸质量分数为3%,料液比1:16 g/mL,微波功率620 W,提取时间60 min的条件下,沙棘果皮渣中可溶性膳食纤维提取效果最佳,提取得率为11.07%±0.26%,与模型预测值10.83%误差为2.22%。制备的沙棘果皮渣可溶性膳食纤维持水力为8.02 g/g,持油力为4.19 g/g,膨胀力为3.82 mL/g。超声波-微波协同法是一种提取沙棘果皮渣中可溶性膳食纤维的有效方法。
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关键词:
- 沙棘果皮渣 /
- 可溶性膳食纤维 /
- 超声波-微波协同提取 /
- 响应面法
Abstract: The ultrasonic-microwave synergistic method was used to extract the soluble dietary fiber from seabuckthorn peel residue. The effects of mass fraction of citric acid,solid-liquid ratio,microwave power and extraction time on the extraction rate of soluble dietary fiber in seabuckthorn peel residue were studied by single factor experiment,and the optimal extraction process of soluble dietary fiber in seabuckthorn peel residue was further optimized by box-behnken method. The results showed that under the condition of citric acid mass fraction of 3%,solid-liquid ratio of 1:16 g/mL,microwave power of 620 W and extraction time of 60 min,the extraction efficiency of soluble dietary fiber in seabuckthorn peel residue was the best,and the extraction rate was 11.07%±0.26%,and the error with the model predicted value of 10.83% was 2.22%. The water-holding capacity,oil-holding capacity and expansion capacity of the soluble dietary fiber in the prepared seabuckthorn peel residue were 8.02 g/g,4.19 g/g and 3.82 mL/g,respectively. Ultrasonic-microwave synergy is an effective method for extracting soluble dietary fiber from seabuckthorn peel residue. -
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