During solid fermentation by AE255-6,sphingomyelin phosphodie sterase was accumulated to hydrolyze sphingomyelin,free ceramide was released and its content in rice bran was increased from 0.

• 以米糠为原料；采用AE255-6固体发酵产生鞘磷脂酶以定向水解鞘磷脂产生游离神经酰胺；使米糠中游离神经酰胺含量从0.；022%25提高到0