这可能部分源于分离寡聚物成本高耗时长——从数百公斤干燥的植物样本中可能只能分离得到数毫克的纯品。
This is partly because isolating the oligomers is both costly and time-consuming - processing hundreds of kilograms of dried plant material often yields only a few milligrams of a single product.
利用甲醇、H_2+CO_2或乙酸盐作为碳源和能源，从池塘的沉积物取样，经过反复的富集和分离，得到了甲烷八叠球菌的纯培养物。
Samples from pond sediments were inoculated to obtain the pure culture of Methanosarcina sp. by repeated enriching and isolating. Growth was fasted on H_2+CO_2 or methanol.
采用制备高效液相色谱技术，从杜仲叶提取物中分离纯化得到高纯活性成分绿原酸。
Preparative high performance liquid chromatography (PHPLC) technique was used to separate and purify high purity of chlorogenic acid from Eucommia ulmoides Oliv.
用虫草的虫体、菌柄、子座、及子囊孢子进行了纯培养分离，结果获得了分生孢子阶段的真菌的纯培养物。
The isolation of pure culture by using hyphal, stipe, stroma and ascospore obtained the pure culture of conidium phase.
最终的晶体浆液被送到分离器中，生产纯浓缩物蒸汽和冰生成物。
The final crystal slurry is sent to a separator, which produces a stream of pure concentrate and an ice product, which may contain low levels of product.
中性油层析分离为3个馏分：环己烷洗脱馏分（C1）主要为四环以下纯缩合化合物；
The neutral bio-oi1 can be separated into three fractions: The fraction washed down by cyclohexane (C1) mainly contains aromatics with up to four rings;
结果：从巴戟天寡糖粗提取物中分离得到菊淀粉型五聚糖纯品，得率1.8%，纯度99.99%。
Result:The compound inulin-type pentasaccharide was preperated with the high purity of 99.99%, and the yield rate was about 1.8%.
结果：从巴戟天寡糖粗提取物中分离得到菊淀粉型五聚糖纯品，得率1.8%，纯度99.99%。
Result:The compound inulin-type pentasaccharide was preperated with the high purity of 99.99%, and the yield rate was about 1.8%.
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