英语语法分析

The invention discloses sulfated galactan and a preparation method thereof.

本发明公开了一种硫酸化半乳聚糖及其制备方法。

The sulfated galactan is prepared by the processes of water extracting, acid degrading, membrane filtering, alcohol precipitating, drying and the like.

所述硫酸化半乳聚糖经水提取、酸降解、膜过滤、醇沉、干燥等工艺制备而成。