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%.

• 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%25以上。