Abstract: This research used abolished yeast mud(the living rate of the yeast exceeded 90%)from the brewery as the raw materials,and impelled the yeast cells to self-dissolve under the gentle condition by adopting modern biotechnology and utilizing many kinds of enzymes from the yeast body.The self-dissolved products were made a kind of powdery yeast extractant by the use of the centrifugation and dry-spraying methods.

Key words: Brewers yeasts , Yest extractant , Self-dissolve