Rapid and sensitive method to measure premature yeast flocculation activity in malt

We have developed a rapid, sensitive, and reproducible method to measure the premature yeast flocculation (PYF) activity level in malt without the need for mashing or fermentation. The analysis time was only 3 hr, and the PYF activity level measured by this method correlated well with that measured using a fermentation test. Furthermore, the PYF activity level in barley or green malt could be measured by this method. This method provides a highly efficient tool to test the fermentability of barley, malt, and wort.