Sensor can detect spoiled milk before opening

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Researchers at Washington state university say expiration dates stamped on cartons of milk are not always reliable. Komo's Corwin Hake reports they've developed a way to test the freshness of unopened milk. Researchers say expiration dates are only accurate if the milk has been stored at the correct temperature the entire time and sure you can smell spoiled milk. But there's no way to smell through that sealed plastic or cardboard container or is there at the w s you school of food science a high tech sensor can now figuratively smell whether milk has gone bad accord. Adding to a newly published paper the sensors able to detect volatile organic compounds generated by the growth of spoilage bacteria in pasteurized milk. When those spoil compounds are detected, the sensor changes color, the next step could make this sensor, really useful. They're working on a way to show you how long you have before your milk

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