P145: Concentration and viability measurement of yeast in corn mash using the Cellometer Vision

Sunday, August 1, 2010
Pacific Concourse (Hyatt Regency San Francisco)
Leo L. Chan1, Emily J. Lyettefi2, Alnoor Pirani2, Tim Smith2, Bo Lin2 and Jean Qiu1, (1)Technology R&D, Nexcelom Bioscience, Lawrence, MA, (2)Applications, Nexcelom Bioscience, Lawrence, MA
We demonstrated the capability of determining yeast concentration and viability in corn mash, where strong fluorescence signals from detected and counted from viable and nonviable yeast cells, while nonspecific staining of corn mash is minimized to facilitate effective automated cell counting algorithm.  The development of the counting protocol employing Cellometer® Vision provides a simple tool for the biofuel industries to rapidly monitor yeast viability throughout a fermentation process to ensure optimal bioethanol output.  Furthermore, this novel imaging cytometry method has the potential to simplify yeast research, which will be a tremendous impact on renewable energy development as fossil fuel reduction and global warming issues increase.