Fast Company's Nidhi Subbaraman brings to attention an edible sensor made of silk that, when applied on foods, can determine if they're still good or it's time to throw them out.
Silk is a marvelously versatile material that is useful in an incredibly wide variety of settings besides luxurious underwear. You can find it in surgical sutures, flexible electronics, and other biologically friendly applications. And soon you might be finding it in your food. Scientists at Tufts University have now engineered the multitalented material into fully chewable food sensors. Pasted onto eggs, stamped onto fruit or floating in milk, they can warn you when your fruit is ripe, or when your milk has gone sour.
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