大豆含有较高的油分(约18%～20%)和非常丰富的蛋白质(约40%～50%),在农作物种子中是比较难贮藏的一种。大豆的种皮比较薄,种胚较大,子叶里几乎一半是蛋白质,这是一种吸水力很强的亲水胶体,它的吸湿力比稻谷、小麦和玉米等都强。大豆种子贮藏在高湿度(相对湿度在90%以上)的条件下,极易吸湿膨 Soybean contains high oil content (about 18% ~ 20%) and very rich protein (about 40% ~ 50%), which is a kind of hard-to-store in crop seeds. Soybean seed coat is relatively thin, embryo larger, almost half of cotyledons in the protein, which is a very strong hydrophilic hydrocolloid, its moisture absorption than rice, wheat and corn are all strong. Soybean seeds stored in high humidity (relative humidity above 90%) conditions, extremely hygroscopic swelling