This paper deals with the way of purifying highly purity hyaluronic acid from ox eye by fractionation and organic solvent precipitation.
本文报道采用分级分离并结合有机溶剂沉淀法，从牛眼中纯化出高纯度透明质酸，较其他方法简便，易形成规模。
The vacuolating Cytotoxin from Helicobacter pylori YC-11 was purified by using water-extracting, salt precipitation and gel filtration chromatographic fractionation.
运用水油提、盐析及凝胶过滤色谱法对幽门螺杆菌YC-11株所分泌的形成空泡细胞毒素进行了提取。
Tannin fractions with different molecular weight distributions were obtained by purification of alcohol precipitation and fractionation of solvent extractions of black wattle bark tannins.
通过对黑荆树皮单宁进行醇沉纯化和溶剂萃取分级，可得到分子量分布范围不同的单宁级分。
Tannin fractions with different molecular weight distributions were obtained by purification of alcohol precipitation and fractionation of solvent extractions of black wattle bark tannins.
通过对黑荆树皮单宁进行醇沉纯化和溶剂萃取分级，可得到分子量分布范围不同的单宁级分。
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