Center for Biofilm Engineering
Darla Goeres leads the Standardized Biofilm Methods Laboratory in the Center for Biofilm Engineering. Her laboratory develops and validates protocols to grow, treat, sample, and analyze biofilm bacteria and her team is responsible for the first validated ASTM biofilm standard test methods. Dr. Goeres has investigated biofilm in hot tubs, oil fields, manufacturing lines, heating/cooling systems, the built environment, beverage dispense lines (beer), and indwelling medical devices. Biofilm research has enabled her to collaborate with scientists and engineers from around the world and this opportunity constantly reminds her that microbes do not see international boundaries, and that the really challenging problems require diversity of thought and innovation.
In the US, there has been a resurgence of craft brewing. Beer quality becomes compromised when draught lines become contaminated with undesired bacteria or yeast that produce off-flavors, aromas, and haze. If there is an unfortunate contamination event that enables biofilm to form, the challenge is that the bacteria and yeast within it become more tolerant to disinfection. The extracellular matrix, which can consist of beer stones, proteins, or lipids, may contain some of the compounds contributing to the off flavors. Additionally, the physical properties of the biofilm matrix often make it difficult to remove from the system once established. In this presentation, Dr. Goeres will describe the results of a study to understand the impact repeated exposure to cleaning chemistries has on biofilm growth, kill/removal, and subsequent regrowth in beer draught lines.
Webinar Platform: Zoom