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超声波和微波提取薏苡仁粗多糖及抗氧化活性的比较 被引量:5

Comparison of Extraction Rate and Antioxidant Activity of Crude Polysaccharide from Coix Seed Extracted by Ultrasonic and Microwave
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摘要 为比较超声波和微波2种方法对薏苡仁粗多糖提取率和抗氧化活性的影响,以粗多糖提取率为指标,DPPH为抗氧化活性评价方法对2种方法的提取效果进行了研究。结果表明:以水为提取剂、固定料液比1∶15(g/mL)、热水浸提温度100℃、热水浸提时间150min,超声波功率150W、超声时间70min,微波功率600W、微波时间4min的条件下,超声波和微波粗多糖提取率及DPPH清除率分别为7.20%、6.05%和40.18%、30.53%,超声波粗多糖提取率及DPPH清除率比微波提取提高19.01%和31.61%,差异达显著水平(p<0.05)。结论:超声波法更有利于薏苡仁粗多糖的提取。 In order to compare the two methods (ultrasonic and microwave) according to the result of extraction rate and antioxidant activity, the extraction rate was studied by using DPPH Method. Results: under conditions of solid-liquid(water) ratio 1:15 (g/mL), hot-water extraction 100℃ (150 min), ultrasonic power 150 W(70 min), microwave power 600 W(4 rain), the polysaccharides extracting rate and DPPH clearance were 7.20% and 6.05%(ultrasonic) ,40.18% and 50.53% (microwave) respectively. The former were significantly higher than the latter by 19.01% and 31.61% separately. Conclusion: ultrasonic method was more available for extracting crude polysaccharide from coix seed.
出处 《贵州农业科学》 CAS 北大核心 2013年第4期65-67,71,共4页 Guizhou Agricultural Sciences
基金 贵阳市科技计划项目"贵州药食两用系列产品深度开发关键技术研究与产业化"[筑科合同号(2011204)]
关键词 薏苡仁 粗多糖 抗氧化活性 超声波 微波 提取方法 coix seed crude polysaccharide antioxidant activity ultrasonic microwave extraction method
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