用绿豆淀粉通过醚化或氧化制成羟丙基淀粉和氧化淀粉，找出最佳工艺条件，收率可达90 %以上。
Hydroxypropyl starch and oxidized starch was prepared by etherification or oxidation with green soybean starch, and the optimum production conditions was found. The yield was over 90%.
在羟丙基醚化反应中淀粉发生降解，产物MS与分子量变化无明确的定量关系。
All the HPS were the mixed products, whose MS had no clearly quantitative relation to the molecular weight distribution of the solid HPS.
在羟丙基醚化反应中淀粉发生降解，产物MS与分子量变化无明确的定量关系。
All the HPS were the mixed products, whose MS had no clearly quantitative relation to the molecular weight distribution of the solid HPS.
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