It’s difficult to create a natural blue coloring, but a team of scientists from around the U.S. and the world have done just that.
Feingold families have used red cabbage to make blue dye, but the results did not compare to the vibrant hues found in synthetic versions. The researchers also started with red cabbage because it contains pigments (anthocyanins) that give plants their red to blue color. But there is only a small amount of blue in the cabbage and lots of red, so the researchers did a lot of genetic tweaking to change the red pigment to blue.
Now if someone can make a natural green dye from broccoli Froot Loops could actually contain vegetables!
Source: “Discovery of a natural cyan blue; A unique food-sourced anthocyanin could replace synthetic brilliant blue” Science Advances, Apr 7, 2021