The paper put forwards the way of extracting refining stevioside by boiling water from the leaves of stevia rebaudiana bertoni and removing impurities from extract by alcohol and ion exchanger.
介绍了用水提取、醇沉淀和离子交换树脂精制等工艺从甜叶菊中提取甜菊苷的方法。
Richly contain chamomile extract, natural floral aromatic essence active oxygen ion, moisturize skin, relieve strain and fatigue for a whole day.
富含洋甘菊萃取液、天然花草香芬精华及活氧离子，清洁滋润肌肤的同时舒缓肌肤一整天的紧张和疲劳。
Objective:Using organic membrane filtration and ion exchange to extract L-valine from the fermentation broth.
目的：利用有机膜过滤和离子交换法分离提取发酵液中的L-缬氨酸。
Trace amounts of molybdenum in water and soil extract samples were determined using a dual column on-line ion-exchange preconcentration FIA-ICP system.
本文采用双柱在线离子交换预浓缩FIA-ICP系统，建立了水及土壤浸出液中痕量钼的测定方法。
Result : MPS showed excellent adsorption charateristics to remove plumbum ion from the extract of L. japonica, with fast adsorption rate and more than 80% removal efficiency.
结果 ：静态吸附表明，MPS吸附药液中铅的速度很快，铅的脱除率达到80%。
Result : MPS showed excellent adsorption charateristics to remove plumbum ion from the extract of L. japonica, with fast adsorption rate and more than 80% removal efficiency.
结果 ：静态吸附表明，MPS吸附药液中铅的速度很快，铅的脱除率达到80%。
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