Methods:SDS-PAGE was performed with samples including Indonesia EBN,EBN from Huaiji of Guangdong Province and three impure EBN samples which were added with gelatin,white fungus or pork skin respectively.

• 方法：提取印尼燕窝、怀集燕窝及常作为伪品的明胶、银耳、猪皮的蛋白质,进行SDS-PAGE和等电聚焦电泳研究。