The Suantangzi is a traditional ethnic food with good nutritional properties and unique flavor, which is popular among Manchu people and northeastern Chinese people. The diverse microbes in corn sourdough for Sutangzi play an extremely important role in the development of its nutritional quality. However, the microbial community diversity is still unclear today. This study aimed to study the diversity of the microflora in nine samples of Suantangzi sourdough collected from different regions by polymerase ch...