Hot Water Treatment For Five Minutes can Improve Taste of Green Tomatoes

A new study suggests that dipping green tomatoes in hot water for five minutes and then allowing them to cool at room temperature could dramatically improve the flavor of this popular food.

"Ideally, tomatoes should be picked ripe and then sold immediately, as they are at farm stands," said Jinhe Bai from the US Department of Agriculture.

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But this is not always possible for commercially sold tomatoes, which are often stored and then shipped over long distances.

To prevent tomatoes from becoming too ripe before they reach the store, growers pick them when they are still green.

Packers then use a gas called ethylene to trigger fruit ripening, and after that the tomatoes are stored and shipped at low temperatures.

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The problem is that chilling tomatoes degrades their flavor, Bai pointed out.

In an effort to improve the flavor quality, the researchers developed a slightly different method.

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"To produce a better tasting tomato, we added a hot water pre-treatment step to the usual protocol that growers follow," he explained.

"We found that this pre-treatment step prevents flavor loss due to chilling," Bai said.

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The researchers dipped green tomatoes in hot water (about 52 degrees Celsius) for five minutes and then let them cool at room temperature.

Next they chilled the fruit to between five and 13 degrees Celsius, the temperatures commercial producers use for shipping.

After the tomatoes fully ripened, the researchers tested them for flavor and aroma.

They found that tomatoes heated before chilling had higher levels of flavor compounds than non-heated fruit, and they tasted better.

The findings were presented at a meeting of the American Chemical Society (ACS).

Source-IANS