Weather in low salt solid-state fermentation or in high salt diluted-state fermentation,Yeasts are widely used to improve the flavor of brewing Soy Sauce.After adding Yeasts to mash,some characterizations of the key aroma compounds in Soy Sauce are increased,such as 4-Ethylguaiacol,p-ethyl phenol,4-hydroxy-2-ethyl-5-methyl-3(2H)-furanone.This essay reviews Zygosaccharomyces rouxii and Tetragenococcus halophila research achievements during resent years,concentrating on flavor differences,fermentation conditi...