Vernier
Why Did My Tea Turn Purple? A Green Chemistry Approach to Teaching Equilibrium
When I was teaching in the classroom, chemical equilibrium was not only a difficult topic for students to understand, but it was also a tricky...
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The Science Behind the Viral Color-Changing Butterfly Pea Tea Sensation
A recent viral video has captivated online audiences by showcasing the stunning natural phenomenon of butterfly pea flower tea changing color. The short clip demonstrates the preparation of the vibrant blue tea, followed by the addition of lemon juice, which dramatically transforms the beverage into a striking purple-pink hue. This visual spectacle is not merely aesthetic; it highlights the natural pH indicator properties of the butterfly pea flower (Clitoria ternatea). Experts explain that the anthocyanin pigments present in butterfly pea flowers are highly sensitive to pH levels. In a neutral or alkaline environment, the tea exhibits its characteristic blue color. However, when an acidic substance like lemon juice is introduced, the pH drops, causing the anthocyanins to react and shift their color spectrum towards red and purple. This makes butterfly pea tea a fascinating and educational example of natural chemistry in action. The video, which has garnered millions of views, underscores a growing interest in visually appealing and naturally derived food and beverages. "It's a simple yet powerful demonstration of how nature works," commented Dr. Anya Sharma, a food scientist. "The visual appeal makes it highly shareable and introduces scientific concepts in an accessible way." The trend of using natural colorants and ingredients continues to rise, with butterfly pea flower tea becoming a popular choice for both its beauty and its mild, earthy flavor.
