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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .Ever throw an avocado in a paper bag with a banana to get the avocado to ripen faster?
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3 .That trick works because both of them are what's called "climacteric" fruits.
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4 .Meaning they release ethylene gas as they mature¡ªand the gas in turn accelerates ripening.
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5 .At maximum ethylene release, the fruit reaches peak ripeness: ideal taste and texture.
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6 .After that, the fruit's cells begin to die, molds move in, and it rots.
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7 .So how to determine the best time for picking and eating?
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8 .Today's high-tech farmers might sample the ethylene released by the fruit, as it sits in an airtight container.
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9 .Or use a color meter, to track a fruit's progression towards "ripe color."
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10 .But now researchers have devised what might be a simpler and more scientifically accurate technique shooting fruit with lasers.
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11 .When they zapped golden delicious apples, what bounced back was a speckled pattern of black and red dots: a measure of how the fruit's cells and water absorbed and reflected the laser light.
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12 .That pattern changed over time, right in step with the fruit's release of ethylene.
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13 .Meaning these images could be a good proxy for ethylene measurements, and let farmers know the best time to harvest.
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14 .The study is in the journal Applied Optics.
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15 .Next, the researchers hope to develop a handheld laser for farmers, so they can shoot fruit right on the tree.
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16 .It remains to be seen if laser measurement of bananas will have¡ appeal.
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17 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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