Cold Brew vs. Hot Brew Coffee: A Scientific Investigation
Introduction to the Study
Published in the journal Scientific Reports, American scientists recently explored the health claims associated with cold brew and hot brew coffee. With the popularity of cold brew coffee, especially during summer, many consumers appreciate its flavor and the supposed health benefits it offers, such as being a rich source of antioxidants.
Health Claims and Popularity
Major coffee retailers, including Starbucks, often market cold brew as a healthier alternative to hot brew coffee. This promotion is based on the belief that cold brew coffee has lower acidity levels, making it gentler on the digestive system and decreasing the likelihood of heartburn and similar issues.
Research Methodology
Two Philadelphia-based researchers, who are avid coffee enthusiasts, sought to verify these claims. In their laboratory, they examined various types of cold brew coffee sourced from five different countries. The study aimed to compare the acidity levels and antioxidant content between cold brew and hot brew coffee.
Key Findings
The results of the study revealed that the pH levels of both cold and hot brew coffee are comparable, indicating that both types are equally acidic. Consequently, cold brew coffee may not be a safer choice for individuals with sensitive digestive systems. Furthermore, the researchers discovered that cold brew coffee contains a lower antioxidant content. They noted a higher concentration of coffee-composing acids in hot brew coffee, which may contribute to its associated antioxidant benefits.
Conclusion
These findings suggest that hot brew coffee could potentially offer greater health benefits than cold brew coffee. This information may be useful for consumers when making choices about their coffee preferences in the future.
Reference
Rao NZ, Fuller M. Acidity and Antioxidant Activity of Cold Brew Coffee. Scientific Reports, 2018.