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

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.
Buy Only Fresh Gourmet Coffee Beans if You are Looking to Brew Flavorful Gourmet Coffee
Most coffee beans are grown in sub-tropical climates all over the world. The altitude and region can make a world of difference in the taste of your coffee.
Brazilian Coffee
Adultery, deceit and politics, all the makings of a modern-day best-seller, yet this story is over 250 years old and what ultimately led to brazilian coffee. In 1727 a Brazilian official named Francisco de Melho Palheta was invited to mediate a heated border dispute between French and Dutch Guiana.
Arabica Coffee Beans Are Pricey Yet Priceless!
Arabica coffee beans are known for a better-flavored coffee. There are two main species of coffee beans that are grown for sale: Robusta and Arabica.
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.
Coffee and Depression: Coffee as an Antidepressant?
When you grab that morning cup of java, you're probably not thinking of it as an antidepressant. You're just trying to get that morning pick me up to get your day going.
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.
The Great Bean Mystery - Find the World's Best Coffee
Who doesn't love solving a good mystery? Is the Loch Ness monster real? Who built Stonehenge? Does Big Foot really exist? What is the world's best coffee? While you may need to be an expert to solve the first three, no advanced degree or special knowledge is required to unravel one of the greatest mysteries of the 21st century: What is the world's best coffee?All you need to solve this caffeinated mystery is equip yourself with the right information. And, thanks to the Internet, finding the information for your coffee trekking adventure is as easy as the click of a button.
A Coffee Roaster For All Occasions
Coffee roasters and those who roast, brew and serve the ultimate cup of coffee are now esteemed professionals within the social fabric of our community at large. A good coffee roaster is a little like a celebrity chef these days, complete with loyal followings, highly descriptive reviews and the ability to command premium prices for their products and services.
Coffee Club Membership Is A Joy For Coffee Lovers
Coffee club membership is a joy for coffee lovers The coffee club concept is relatively new but is taking the world by storm. Reward yourself or your friends and relatives with coffee clubs by joining up and saving loads.
Starbucks Coffee History
To summarize something as phenomenonally successful as Starbucks coffee history might be a challenge. Many volumes have been written on the subject, it is examined and taught in business schools, and whole semesters are dedicated to the marketing genius of the company.
Is Caffeine a Hero or a Villain in Your Life?
Many sober, law abiding people who would never dream of knowingly taking a mind- altering drug, actually consume one every day. Chances are that youâ??re doing it too! What is this drug? â?" Caffeine!Caffeine is so pervasive in our culture and in many other cultures that we often forget it is literally a drug that affects our brain.
Who is Juan Valdez?
Juan Valdez is a fictitious character who was created in 1959 to represent the National Federation of Coffee Growers of Columbia, founded in 1926.He is one of the most familiar faces in the advertising world, with his moustache, sombrero, poncho and his faithful mule, Lana.
Coffee Makers
If you are a gourmet coffee drinker, you may want to opt for the convenience of your own coffee maker. After all, who wants to get up early and run out to buy a cup of fresh coffee each and every morning? It is so much more enjoyable to sit and sip your coffee while reading the paper in your robe and slippers.
English Coffee
With English Tea being a very familiar term, English coffee may seem as contrary a term as Arctic bananas; however, England's impact on the coffee trade and the world of business is undeniable. The history of English coffee began in 1650 at Oxford University when a Lebanese immigrant opened the first coffeehouse on campus.
Russian Tea drinking - The beginning
It is believed history of Russian tea drinking tradition have began at 1638.That year, Russian Czar, Michael Fedorovich, granddad of Peter the Great,got special, diplomatic gift from Altyun-Khan, ruler of Mongolia.
10 Timeless Tips to a Perfect Cup of Coffee
Few quests in human history have so captivated men and women from around the world than the search for the perfect cup of coffee. Yes, believe it or not, coffee connoisseurs have dedicated entire lifetimes in the pursuit of finding that one cup of the most heavenly coffee ever made.
Pure Kona Coffee
Pure Kona Coffee is gourmet coffee grown only on the Island of Hawaii. It is grown on the dark volcanic lava rock slopes of Kona which is located on the west side of the Big Island.
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.
Make Money In Your Own Coffee Business
A 2001 survey by the National Coffee Association indicated that over 100 million people drink coffee on a daily basis and that nearly 60 million more occasionally consume coffee. Based on average drinking habits, the daily coffee drinker will consume multiple cups per day - totalling hundreds of millions cups of coffee being consumed every 24 hours.