October 25, 2014 10:23:44 am
Love fried food? Try olive oil as it withstands the heat of the fryer or pan better than several other seed oils to yield healthier food.
The researchers deep- and pan-fried raw potato pieces in four different refined oils – olive, corn, soybean and sunflower – and reused the oil 10 times.
They found that olive oil was the most stable oil for deep-frying at 320 and 374 degrees Fahrenheit, while sunflower oil degraded the fastest when pan-fried at 356 degrees Fahrenheit.
“For frying foods, olive oil maintains quality and nutrition better than seed oils,” said lead researcher Mohamed Bouaziz.
Different oils have a range of physical, chemical and nutritional properties that can degrade when heated.
Some of these changes can lead to the formation of new compounds that are potentially toxic.
By-products of heating oil can also lower the nutritional value of the food being fried.
The study was reported in ACS’ Journal of Agricultural and Food Chemistry.
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