Heating Vegetable Oil to Frying Temps Forms Toxic Compound

New research by a University of Minnesota professor and a graduate student shows that when highly unsaturated vegetable oils are heated at frying temperature (365 F) for extended periods-or even for half an hour-a highly toxic compound, HNE (4-hydroxy-trans-2-nonenal) forms in the oil.

A. Saari Csallany, professor of food chemistry and nutritional biochemistry at U. of Minn. said "HNE is a well known, highly toxic compound that is easily absorbed from the diet.

The toxicity arises because the compound is highly reactive with proteins, nucleic acids-DNA and RNA-and other biomolecules.

HNE is formed from the oxidation of linoleic acid, and reports have related it to several diseases, including atherosclerosis, stroke, Parkinson's, Alzheimer's, Huntington's and liver diseases."

Nutritionists regard vegetable oils such as soybean, sunflower and corn as heart-healthy because of their high levels of linoleic acid, a polyunsaturated fatty acid.

HNE is incorporated into fried food in the same concentration as it forms in the heated oil.

Csallany's work underscores the risk of repeated heating, or reusing, highly unsaturated oils for frying because HNE accumulates with each heating cycle. In future studies, Csallany and her colleagues plan to determine how long polyunsaturated oil must be heated at lower temperatures in order to form HNE and its related compounds.

John Hart is the editor of Pathogen Alert, a daily blog that tracks deadly pathogens around the globe. Visit the site at http://www.urgentebooks.com/blog

More Resources

Unable to open RSS Feed $XMLfilename with error HTTP ERROR: 404, exiting

More Coffee Information:

Related Articles

Ganoderma Coffee - Can It Be Good For You?
Are you a coffee addict? Are you searching for a healthier coffee alternative? Do you enjoy a good cup of coffee, but choose other beverages, because it does not agree with you? If you answered yes to any of these questions, you are in for a pleasant surprise.Believe it or not, all coffee is not bad for you.
Coffee and Asthma?
Here are some facts about the relationship between coffee and asthma. Regular coffee drinkers have about 1/3 less asthma symptoms than those of non-coffee drinkers according to a Harvard researcher who studied 20,000 people.
Arabica Coffee
As you may have guessed, Arabica coffee gets its name from Arabia, the land of kings. When it comes to coffee, Arabica is definitely king.
What Makes Hawaiian Coffee So Special?
Coffee was first introduced to the Islands by Chief Boki, the Governor of Oahu, in 1825. He acquired coffee plants in Rio de Janeiro while aboard a British warship, the H.
Coffee Breaks - Do They Create Stress?
The American custom of taking break during the working hours. Thus coffee breaks began in the early 20th century.
6 Delicious Coffee Recipes
Do you love coffee? Most of us do. In this article we will provide you with 6 recipes to enjoy your coffee a different way.
How to Make Restaurant Quality Coffee At Home
Have you ever wondered how restaurants get their coffee to taste so good?First of all, restaurants are in the business of pampering you so they devote much more time to the perfection of a good cup of coffee. Sometimes I'll remember a restaurant just because of their excellent coffee.
Coffee, Caffeine & Fitness
One look at a line at the local Starbucks in the morning and you don't need to be convinced of the huge amount of coffee consumption in the U.S.
3 Simple Tips For Making Perfect Coffee
Want to brew the perfect cup of coffee?Here are 3 simple tips that will make a difference in every single cup you drink.Tip #1Clean Coffee PotA clean pot is essential and can make a world of difference in the taste of your coffee.
Extracting the Coffee Flavor
The beverage called coffee is the result of mixing dry coffee with water. The combination can be done by one of many methods - ranging from the very simple, with the minimum of equipment - to the use of complex coffee machines which can cost thousands of dollars.
Kenya Coffee History
In Kenya coffee production dates back several hundred years. Coffee was originally discovered in Ethiopia, Kenya's neighbor to the north.
Coffee Bean Roaster
The coffee bean roaster is fast becoming a "must have" in today's kitchens. The flavor and freshness of coffee is at its best when it is roasted in small batches at home.
Those Elusive Coffee Beans!
With the spread of various coffee beans into our lives, it can be more and more difficult to discern what you're buying at the market. And that's not surprising given the sheer numbers game.
Gourmet Coffee Beans
You can be a coffee lover without knowing much about coffee beans, but learning a little bit about the different types of coffee can help you get the perfect cup every time. There are many types of gourmet coffee beans.
Coffee and Alzheimers Disease
With the American population aging rapidly, diseases that affect the health of the elderly are becoming increasingly important. The prevalence of these conditions is increasing and is costing both insurers and taxpayers billions of dollars each year.
Coffee and Health
From the year dot, my mother taught all her children that coffee was not bad for you. But of course it is.
Coffee - Is It The Most Popular Beverage Of All Time?
Around 850 A.D it is thought that a lone shepherd and his sheep happened upon a strange and mysterious plant growing upon a secluded and forgotten hillside.
Does Your Morning Coffee Cause You Pain or Discomfort?
Does your morning coffee cause you pain? Are you frustrated whena night out dining with friends ends in discomfort instead ofrelaxed conversation? Do you carry antacids with you every day?Heartburn is more than just a nuisance. It can detract fromenjoying a meal, force you to change your routine and hang overyour every decision - what to eat, what to drink, when to laydown.
There is More to Motivation Than Meets the Coffee
The stress of unemployment can really take a toll on ones confidence and state of mind. For some individuals, it could lead to depression, for others - a mere lack of motivation and feeling of hopelessness.
Why Your Cup of Coffee in the Morning May Keep You Up All Night
One of the most common complaints among coffee drinkers isthat the caffeine can disturb their sleep. This result has been known for thousands of years and is, in fact, one of the reasons why many drink coffee in the first place: to stay awake.