In the paper,the principle of DGGE and its application in food microbiology were reviewed.The application of PCR-DGGE in fermented food research was illustrated outstandingly.

• 介绍了DGGE的基本原理及其在食品微生物学研究中的应用,着重阐述了PCR-DGGE在发酵食品研究中的应用进展。