The Science of Terpenes with Dr. Shawna Vreeke

What are cannabis terpenes, how do they influence aroma and consumer experiences, and what do we know about their safety? On this episode of the Bioactive Podcast, Dr. Riley Kirk sits down with Dr. Shawna Vreeke, PhD, DABT, Head of Toxicology at True Terpenes, to explore the science of cannabis terpenes, terpene chemistry, cannabinoid interactions, and consumer safety. With a PhD in Chemistry focused on toxin formation in vape device aerosols and expertise in toxicology risk assessment, Shawna shares insights into what current research tells us about terpenes and where important questions remain unanswered.

They discuss the differences between cannabis-derived and botanically derived terpenes, how terpene profiles may influence cannabis effects, and why THC percentage alone doesn't tell the whole story. The conversation also examines terpene concentrations in vape cartridges, the effects of overheating and chemical degradation, vaping hardware standards, potentially harmful diluents, and the importance of science-based safety regulations. Shawna also explains how terpenes are studied in edibles, why consumer experiences matter, and how aroma, sensory testing, and quality control can help us better understand these complex compounds.

From the relationship between terpenes and the entourage effect to stereoisomers, cannabis aroma chemistry, and the limits of current research, this episode offers a deeper look at what we know about terpenes and what scientists are still working to understand.

Chapters

00:00 Meet Shauna Vrieki

02:27 Vape Crisis Lessons

03:55 Terpenes 101 Basics

05:06 Cannabis Aroma Diversity

08:16 Do Terpenes Affect You

13:02 Research Criticism Reality

14:31 Botanical vs Cannabis Terps

20:15 Terp Percent in Vape Carts