Monthly Archives: June 2010

Mentos and Diet Coke Geysers II

In the interest of advancing the pursuit of scientific truth I will report on the results from the Mentos and Diet Coke investigation that I described in the last post. As I said our  control conditions were 24 oz. (700 milliliters) of Diet Coke with 5  mint Mentos introduced through a “geyser tube.” The average […]

Mentos and Diet Coke Geysers

The final week of lab this semester we did an experiment based on the Mentos and Diet Coke geyser phenomenon. I bought several “geyser tubes” from Steve Spangler which allow the operator to introduce 1 to 10 Mentos (or Mentos-shaped objects) into the soda bottle in a safe and reproducible fashion. There is not a […]

Antioxidant Activity III

The second week of the antioxidant lab students analyzed the antioxidant power and polyphenol content of four commercial bottled teas. We used TPTZ (2,4,6-tripyridyl-s-triazine) FRAP assay to measure antioxidant power of tea and compare it with a gallic acid standard. We used the same serial dilution technique that we had performed the previous week. The […]