In this paper, we summarized the processes of isolation, character, primary structure and the mutil-function of BWPI.In the end, the development of BWPI is also put forward.

• 该文对已有研究成果进行总结,并从BWPI提取方法、理化性质、初级结构、生理功能及研究存在问题等方面进行介绍,以供相关研究人员参考。