CHITOSAN COMPLEX

摘要

It is intended to provide a sialic acid-containing complex capable of capturing viruses of a large number of types and a virus-capturing agent originating in a natural material with the use of the same. Namely, a chitosan complex wherein sialic acid or the reducing end of a sugar chain containing sialic acid is reductively condensed with the amino group of chitosan and a virus-capturing agent using the same. As the sugar chain containing sialic acid as described above, it is preferable to use a sialic acid-containing sugar chain mixture obtained from milk (for example, bovine milk), in particular, colostrum or a processed product thereof. Thus, a virus-capturing agent capable of simultaneously capturing viruses of a large number of types can be conveniently and economically produced.