Tannin fractions with different molecular weight distributions were obtained by purification of alcohol preci pitation and fractionation of solvent extractions of black wattle bark tannins.
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释义
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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