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Rapid Spectral Imaging Determines Grapes’ Ripeness

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Michael D. Wheeler

In the long history of winemaking, determining when to harvest the grapes has been a task marked as much by guesswork as by skill. The conventional means to gauge ripeness involves selecting sample grapes and testing them with a sugar refractometer, which designates the grapes' sugar concentration. Because pigments strongly influence wine quality, visual evaluation of the grapes' skin is also important. But this approach is subject to human error. A team of researchers at the Carnegie Mellon Research Institute hopes to change that with a customized acousto-optic tunable filter that...Read full article

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    Published: March 2000
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