A Warning if You Love Deep-fried Foods

By , Category : Food and Nutrition

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Warning if You Love Deep-fried FoodsHere’s some health advice for the next time you feel the urge to indulge in some french fries: be careful where and how you do your deep-frying. It would be better, of course, if you avoided eating fried foods altogether. The problem is, foods like french fries and donuts are high in a dangerous fat called trans fatty acid (TFA). TFAs have been proven to be a risk factor in developing heart disease.

If you can’t stay away from fried foods completely, you can find some solace in the recent findings of a study conducted at the Central Food Technological Research Institute in India. There, researchers have determined that you can lower your intake of TFAs from fried foods by choosing the right material for your deep-fryer and cooking at the right temperature.

Researchers at the institute undertook a study to determine the effect of heating vegetable oils and partially hydrogenated vegetable fats with different initial TFA content in stainless steel, hindalium (an aluminum alloy), cast iron, and glass containers. Ground nut oil, refined, bleached palm oil, and two partially hydrogenated vegetable oils with low and high TFA content were uniformly heated at 175-185 degrees Celsius over a period of 12 hours.

The researchers discovered the following:

— An increase in TFA content was observed in palm oil in the cast iron container

— The heating process of fats and oils also led to an increase in butyro refractometer readings (an instrument for measuring fat content)

— The TFA content of nut oil, palm oil, and hydrogenated vegetable oil increased with repeated or prolonged heating

— The cast iron container showed the highest increase in TFAs for palm oil

— Oils heated in glass and stainless steel containers showed less TFA formation

Most people don’t do deep-frying at home—and finding a place where healthy oil is used in a stainless steel deep-fryer at your favorite local restaurant may be a bit of a challenge. It should be worth the effort of looking, however, if you can lower the amount of trans fats you get in your diet.

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Dr. Victor Marchione, MD

About the Author, Browse Victor's Articles

Victor Marchione, MD received his Bachelor of Science Degree in 1973 and his Medical Degree from the University of Messina in 1981. He has been licensed and practicing medicine in New York and New Jersey for over 20 years. Dr. Marchione is a respected leader in the field of smoking cessation and pulmonary medicine. He has been featured on ABC News and World Report, CBS Evening News and the NBC Today Show and is the editor of the popular The... Read Full Bio »