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超微粉碎-微波辅助提取洋蓟可溶性膳食纤维工艺优化

Food Research and Development(2023)

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Abstract
以洋蓟加工副产物为原料,通过超微粉碎-微波复合改性获得可溶性膳食纤维(soluble dietary fiber,SDF),并以SDF得率为评判指标,采用单因素试验对柠檬酸质量分数、液料比、微波功率和微波时间 4个因素进行研究,在该基础上开展响应面优化试验.结果表明:提取洋蓟SDF的最佳工艺参数为柠檬酸质量分数 1%、液料比 25∶1(mL/g)、微波时间 30s和微波功率500 W,该条件下洋蓟SDF得率为 19.37%.与普通粉碎进行比较,改性后SDF含量增加199%(P<0.05),微观结构颗粒尺寸减小、疏松多孔、比表面积增加,为后续开发洋蓟的附加价值提供参考.
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Key words
artichoke dietary fiber,superfine comminution,microwave-assisted extraction,compound modifi-cation,microstructure
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