Scientists at the University of Missouri are making natural food dyes. They use a special purple corn to replace artificial colors. Many artificial dyes come from petroleum. In contrast, purple corn has natural pigments that are good for heart health.
Natural colors often break down quickly under heat and light. The scientists tested the purple corn pigment under high heat. Most of the color remained strong. When they protected the pigment, it became a stable powder. This powder kept its color in fruit drinks for seven weeks.
Researchers are now helping local farmers grow purple corn. This gives people healthier food and helps farmers earn more money.
Difficult words
- artificial — made by humans rather than occurring naturally
- pigment — a natural substance that gives color to somethingpigments
- petroleum — a dark oil from underground used for fuel
- stable — fixed and not changing or breaking down easily
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you prefer food made with natural colors or artificial colors? Why?
- Why is it helpful when scientists work together with local farmers?
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