Comparison of microbial diversity and metabolites on household and commercial .

In this study, the microbial diversity, free amino acid (FAA), and biological activities of household (HDJ) from four different regions and commercial (CDJ) four manufacturers were analyzed. And volatile flavor compound (VFC) and isoflavone profiles were analyzed using gas chromatograph-mass spectrometer (GC-MS) and high performance liquid chromatography (HPLC), respectively. The major bacterial genus in 1HDJ and 2HDJ was (97.5%), while in 3HDJ and 4HDJ, it was (47.5%) and (80%), respectively. was the main bacterial genus of CDJ. The genus among yeast was comparatively high in all samples. In all samples, glutamic acid predominated among the FAAs, and the 3-methyl butanal, benzeneacetaldehyde, and diallyl disulphide were major VFCs. CDJ contained higher levels of isoflavone-glycoside and total phenolics. Except for 3HDJ and 4CDJ, the isoflavone-aglycone and total flavonoid contents were higher in HDJ. The correlation between bacterial genus and metabolited of showed that was closely related to glutamic acid, was related to aglycones and ammonia, and was highly related to isovaleric acid. While, correlation between yeast genus and metabolited of confirmed that , , and were related with furfural, benzeneacetaldehyde, and 3-methyl butanal, respectively. The results of this study can be utilized as basic data for the industrialization and development of .