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Dasia Taylor's Color-Changing Surgical Threads Detect Infections at pH 9
Shivam Das
July 10, 2026
Dasia Taylor's Color-Changing Surgical Threads Detect Infections at pH 9
Every year, more than 2 million people undergo surgery in the US, with millions more worldwide, putting them at risk of surgical site infections (SSIs), a major global health issue that causes extended hospital stays, higher costs, and deaths, especially in low- and middle-income countries, where infection rates are as high as 11% post-surgery. Dasia Taylor, a 17-year-old from Iowa City West High School, has developed a color-changing surgical thread that can detect infections at a pH of 9, addressing this pressing problem. Her invention has sparked widespread admiration and debate, with many calling for its widespread adoption.
Dasia's interest in science and technology began in her junior year, when she started working on her high school science fair project, which eventually led to the development of the color-changing thread. The idea was born out of her frustration with existing "smart sutures" that relied on expensive electronics and were inaccessible to many, particularly in low-income countries. Dasia, driven by her desire to create something more equitable and affordable, began researching alternative materials and stumbled upon pH indicators, which led her to use beets as the base for her thread.
The beets, rich in betanin pigment, change color in response to pH levels, shifting from bright red in acidic conditions to dark purple at a pH of 9, indicating the presence of an infection. Dasia dyed the sutures with beet juice concentrate, which retained the dye and changed color visibly over a period of 5 minutes when exposed to infection. She tested the threads on artificial skin pads with pH solutions, demonstrating their effectiveness. After months of experimentations, Dasia settled on a cotton-polyester blend, which provided the best balance between color retention and visibility.
Dasia's invention has garnered significant attention and recognition, including winning multiple regional science fairs, being a finalist in the Regeneron Science Talent Search, and receiving the Seaborg Award of
5,000. Her story has been featured in various media outlets, including the Smithsonian, PBS NewsHour, TODAY, CNN, and Ellen. Dasia has also become a role model for young girls and women in STEM, advocating for equity and inclusivity in science and technology.
Key Facts
Dasia Taylor's color-changing surgical thread is a groundbreaking innovation that has the potential to revolutionize the way we detect surgical site infections. The thread, which changes color from bright red to dark purple at a pH of 9, indicating the presence of an infection, is a simple yet effective solution to a major global health issue. Dasia's invention has been recognized for its potential to save lives and has sparked a renewed focus on equity in science and technology.
Dasia's research began in October 2019, a period of significant innovation and creativity. She spent countless hours experimenting with different materials, including cotton, polyester, and other blends, before settling on the cotton-polyester blend. Her dedication and perseverance paid off, as she developed a thread that is not only effective but also affordable and accessible.
The Science Behind It
The science behind Dasia's invention is rooted in pH indicators, which change color in response to changes in pH levels. Betanin, the pigment found in beets, is a natural pH indicator that changes color from bright red in acidic conditions to dark purple at a pH of 9. Dasia used beet juice concentrate to dye the sutures, which retained the dye and changed color visibly over a period of 5 minutes when exposed to infection. The cotton-polyester blend she used provides the best balance between color retention and visibility.
Dasia's research has focused on the unique properties of beets, which make them an ideal pH indicator. The beets are cheap, natural, and accessible, making them an attractive alternative to expensive electronics. Dasia's work has the potential to make a significant impact on global health, particularly in low-income countries where advanced technology is often unaffordable.
The Potential Impact
Dasia's color-changing surgical thread has the potential to revolutionize the way we detect surgical site infections. With its affordability and accessibility, it can make a significant impact in low-income countries where advanced technology is often unaffordable. Dasia's invention has sparked a renewed focus on equity in science and technology, highlighting the need for more inclusive and accessible solutions. The thread's potential to save lives is vast, and its impact could be felt worldwide.
Reactions and Implications
Dasia's invention has sparked a range of reactions, from admiration and praise to skepticism and criticism. Many have called for the widespread adoption of her invention, citing its potential to save lives and reduce healthcare costs. Others have raised concerns about the thread's effectiveness and the need for further testing. Dasia's invention has also sparked debates about the role of innovation in addressing global health issues and the need for more inclusive and accessible solutions.
What Happens Next
Dasia's color-changing surgical thread is currently in the patent-seeking phase, and its widespread adoption is still pending. The thread is not yet in clinical use, but its potential to revolutionize the way we detect surgical site infections is vast. Dasia's invention has sparked a renewed focus on equity in science and technology, highlighting the need for more inclusive and accessible solutions. The future of the thread and its impact on global health remains to be seen, but one thing is certain – Dasia's invention has made a significant contribution to the field of medical innovation.
What is the pH level at which Dasia's thread changes color?
Dasia's thread changes color at a pH of 9, indicating the presence of an infection.
What is the significance of using beets as a pH indicator?
Beets are a natural, cheap, and accessible alternative to expensive electronics, making them an attractive option for Dasia's invention.
How does Dasia's thread compare to existing "smart sutures"?
Dasia's thread is a low-cost and accessible alternative to existing "smart sutures" that rely on expensive electronics.
What is the potential impact of Dasia's invention on global health?
Dasia's invention has the potential to revolutionize the way we detect surgical site infections, particularly in low-income countries where advanced technology is often unaffordable.
Is Dasia's thread available for widespread use yet?
No, Dasia's thread is currently in the patent-seeking phase and not yet in clinical use.
Conclusion
Dasia Taylor's color-changing surgical thread is a groundbreaking innovation that has the potential to revolutionize the way we detect surgical site infections. Her dedication to creating a low-cost and accessible solution has sparked a renewed focus on equity in science and technology, highlighting the need for more inclusive and accessible solutions. The future of Dasia's invention and its impact on global health remains to be seen, but one thing is certain – her contribution to the field of medical innovation is significant, and her story will continue to inspire generations to come.
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