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钠在空气中燃烧生成淡黄色过氧化钠的最佳操作 被引量:2
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作者 谭宗俊 王超文 《化学教育》 CAS 北大核心 2010年第2期75-75,共1页
通过钠在空气中燃烧的实验研究,找出了此实验要观察到淡黄色过氧化钠的关键操作要点,通过研究找到目前最佳而且是最简便的操作方法,使实验得到满意的效果。
关键词 过氧化钠 钠燃烧 最佳操作方法 演示实验
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Study on Extraction Process of Polysaccharides from Chrysanthemum 被引量:3
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作者 LI Peng-wei ZHANG Jing-ya +3 位作者 TONG Yan YIN Peng-hui LI Peng-wei WANG Xian-ling 《Chinese Food Science》 2012年第1期17-19,共3页
[Objective] The aim was to study the optimum extraction process of polysaccharide from chrysanthemum.[Method] By dint of orthogonal and single-factor experiments,the influences of microwave efficiency,extraction time,... [Objective] The aim was to study the optimum extraction process of polysaccharide from chrysanthemum.[Method] By dint of orthogonal and single-factor experiments,the influences of microwave efficiency,extraction time,and liquid ratio on the extraction rate of polysaccharides from chrysanthemum were studied.The optimum operation condition by microwave extraction method was determined and was compared with that by traditional extraction method.[Result] The optimum extraction conditions were:800 W,1:15(solid-liquid ratio),and 15 min.The polysaccharides extraction yield under such optimum condition was 5.59%.The extraction yield of impregnation was generally about 2.73%.[Conclusion] Compared with the traditional extraction method,the microwave extraction was simple,convenient,energy saving,and efficient,and was suitable for industrial extraction of polysaccharide. 展开更多
关键词 Chrysanthemum polysaccharide MICROWAVE EXTRACTION Orthogonal test China
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