March 25th: Which oil is healthier for frying cod

The results of a British study overturn what we believed until now about oils and butters in frying. In Leicester, residents volunteered to participate in an experiment by their local University regarding frying food in different types of fats, i.e. different oils and butters. Thus, experiments were conducted on frying with sunflower oil, seed oil, corn oil, canola oil, olive oil (virgin and non-virgin) and goose fat, writes the iatropedia.Gr.

The participants, having fried at home for a few days with a certain type of fat, sent what was left in the pan to the laboratories of the Leicester School of Pharmacy at De Montfort University of Leicester, where Professor Martin Grootveld and his team analyzed the differences that it had lost all the fat from the high temperatures of frying.

And the results showed something they didn't expect: in addition to olive oil, which passed the tests with flying colors, butter and goose fat turned out to be healthier than some oils!

Sunflower oil and corn oil were found to be prohibited. They had so many polyunsaturates that Professor Grootveld said that under no circumstances should these oils be heated too much, never cook with them and only eat them raw. Olive oil, virgin or not, turned out to be the best and prompted the professor's advice to prefer to cook with it but also when we have it raw at home to protect it from high temperatures. As for butter and goose fat, they surprised everyone as they proved to be quite healthy, coming in second only to olive oil!

When you fry or cook at a high temperature (close to 180˚C), the molecular structures of the fats and oils you use change. They undergo what is called oxidation, meaning they react with oxygen in the air to form lipid aldehydes and peroxides. This also happens at room temperature, but at a much slower rate. At some stage these lipids are completely oxidized. Eating or inhaling aldehydes, even in small amounts, has been linked to an increased risk of heart disease and cancer.

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