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木槿花多糖的超声波辅助热水浸提 工艺优化及抗氧化活性研究

Science and Technology of Cereals, Oils and Foods(2019)

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Abstract
以木槿花为材料,在常规热水浸提基础上辅助超声波破碎提取木槿花多糖.通过单因素实验和Box-Behnken实验设计,采用响应曲面法研究超声波辅助热水浸提工艺对木槿花多糖提取率的影响,建立多糖提取率与提取因素之间的数学模型.结果表明:在常规热水辅助超声波破碎提取木槿花多糖时,在超声时间20 min、超声功率473 W、料液比为1:25(g/mL)时木槿花多糖提取率达到(6.36±0.12)%.体外抗氧化实验初步验证了木槿花多糖对羟基自由基(·OH)和超氧阴离子(O2–)的清除能力较强.
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