Coffee Lit. Rev.

In this episode Chris and Doran discuss the age-old question of whether dark or light roast brewed coffees have more caffeine. The discussion was inspired by a paper published recently in Scientific Reports titled, "Caffeine content in filter coffee brews as a function of degree of roast and extraction yield". So, do light and dark roast coffee extracts have different caffeine concentrations? The paper is open access and available from the publisher: Sci. Rep., 2024, 14, 29126 https://doi.org/10.1038/s41598-024-80385-3 Introduction preamble: Captain Janeway.

Chris and Doran are joined by Dr. Alex Dainis, a professional science communicator. We first met Alex through her work on "Chemistry Shorts", videos about sub-disciplines of chemistry supported by the Dreyfus foundation. Today's paper is about microplastics. These are microscopic pieces of polymer that show up everywhere. In the case in single-serve coffee preparations. Alex is the perfect guest to discuss this because its a topic that is becoming increasingly studied, but to date we simply don't know all that much about whether they are bad for you. We get into that and much, much more. I hope you enjoy! The paper: Pouring hot water through drip bags releases thousands of microplastics into coffee Food Chem., 2023, 415, 135717 ⁠https://doi.org/10.1016/j.foodchem.2023.135717 The article can be found in coffee literature library: ⁠⁠⁠https://pages.uoregon.edu/chendon/coffee_literature/coffee_lit_rev/⁠⁠⁠ About Dr. Dainis: Blimp lover. She has a PhD in genetics from Stanford but is also trained in film and television. After she finished her PhD she founded Helicase media while also being a professional science communicator. Introduction preamble: Pulp Fiction.

Chris and Doran are joined by Prof. Nicola Segata from University of Trento. Prof. Segata is a world famous professor of computational metagenomics, and is the senior author on a recently published study that strongly suggests that consuming coffee directly affects the population of some gut bacteria. Metagenomics is far removed from our expertise. Instead of us fumbling around the paper, we decided to have the true world expert come talk to us about it. Production note: The paper came out over the holiday period so we recorded remotely. The sound quality is not what we usually strive for, but the content quality is exceptionally high. We hope you enjoy. The paper: Nat. Microbio., 2024, 9, 3120 https://doi.org/10.1038/s41564-024-01858-9 The article can be found in coffee literature library: ⁠⁠https://pages.uoregon.edu/chendon/coffee_literature/coffee_lit_rev/⁠⁠ About Nicola Segata: Prof. Segata is from Trento, matriculated through Trento, spent a brief period as a postdoc at Harvard, and returned to Trento where he holds a position as Professor of Computational Metagenomics. He is one of the most highly cited scientists in all fields and has a staggering career of papers that merge computational biology with amazing experimental datasets. You can find his other works here. Introduction preamble: Friends.

Chris and Doran are joined by Tonx (Tony Konecny) from YES PLZ from Los Angeles, CA. We discuss a paper from the Yeretzian lab out of ZHAW. The paper aims to address a common question for the home coffee consumer, "How should you store your coffee one the bag is open?". We immediately thought of Tonx and YES PLZ, who have experimented with various packages for their subscription service. We hope you enjoy the episode. The paper: Food Packag. Shelf Life, 2022, 33, 100893. https://doi.org/10.1016/j.fpsl.2022.100893 The article can be found in coffee literature library: ⁠https://pages.uoregon.edu/chendon/coffee_literature/coffee_lit_rev/⁠. About Tonx: Legend of subscription coffee, Tonx started Tonx coffee and later a coffee/restaurant venture called LocoL. Pre-pandemic he rolled out his current subscription service, YES PLZ. Good timing — home coffee consumption exploded during the 2020-2021 years. Introduction preamble: Steve Leighton