September 2019 Kentucky Lake Section Meeting
Union University, Jackson TN
Carl Grant Events Center

Tuesday, September 24, 2019

Dinner 6:00 pm
Meeting 7:00 pm

Dinner: Sliced Roast Beef or Herb Crusted Chicken, Salad, Cheesy mashed potatoes, green beans, and Chocolate Explosion w/ ice cream
Price: $10 (students $5)

Program: “From Bean to Cup: A Chemist’s Perspective on Brewing the Perfect Cup of Coffee” by Dr. Josh Williams, Union University

Probably starting in Ethiopia, coffee has been cultivated and consumed by humans for over a thousand years, and coffee is now one of the most widely consumed beverages in the world. Coffee brewing methods vary widely as well, but they all have something in common. Brewing coffee, by any method, is ultimately the process of extracting soluble compounds from the solid coffee bean material into the solvent (water). This is, fundamentally, a chemical process. Utilizing chemical ideas and principles can help us to understand this brewing process more deeply and learn to optimize the different brewing variables to achieve what any serious coffee drinker wants – a better cup of coffee. The primary purpose of this very practical presentation is to give non-chemists in the general public a clear understanding of the entire coffee brewing process, and it is designed to be understandable by anyone, regardless of their chemistry background. So, bring a coffee-loving friend and come learn how a little chemistry can help you make a better cup of coffee.

Speaker Biography
Dr. Williams earned a Bachelor’s degree in Chemistry from Augustana College in Illinois, and then a Ph.D. in Chemistry from the University of Oregon. He also completed a post-doctoral fellowship at Pacific Northwest National Lab in Richland, WA, working on epitaxial growth of metal oxide superlattices for photochemical activity. He gained expertise in graduate school and his post-doc in using x-ray analysis methods to characterize thin films, which led to an industry position in Research and Development at Intel Corp. in Portland, a position as an Applications Scientist for an x-ray analysis equipment manufacturer, followed by a position as Chief Scientist in an x-ray analysis equipment manufacturing start-up company. He began teaching in higher education in 2008, and has been at Union since 2011. His current research interests include analytical instrument design and fabrication, exploring guest/host relationships in dye- inclusion crystals, and chemical education.


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