HOME >> BIOLOGY >> NEWS
Food fried in vegetable oil may contain toxic compound

MINNEAPOLIS / ST. PAUL-- University of Minnesota researchers A. Saari Csallany, a professor of food chemistry and nutritional biochemistry, and graduate student Christine Seppanen have shown 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. Previously, vegetable oils such as soybean, sunflower and corn were regarded 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. Also, Csallany and her colleagues have found three toxic HNE-related compounds (known as HHE, HOE and HDE) in heated soybean oil. They will present their work at a poster session from 9 a.m. to 2 p.m. Wednesday, May 4, at the 96th annual meeting of the American Oil Chemists Society in the Salt Lake City Convention Center.

"HNE is a well known, highly toxic compound that is easily absorbed from the diet," said Csallany. "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."

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. The study was funded by the University of Minnesota.


'"/>

Contact: Deane Morrison
morri029@umn.edu
612-624-2346
University of Minnesota
2-May-2005


Page: 1

Related biology news :

1. Tom Siegfried wins AGUs Cowen Award for Sustained Achievement in Science Journalism
2. More fish oil, less vegetable oil, better for your health
3. Food safety begins as vegetables grow
4. Researcher focuses on pros, cons of antioxidants from fruits and vegetables
5. Nutrients in certain vegetables may provide cancer-fighting benefit
6. A vegetable fiber from tomato which can be used in making functional meat and bakery foods
7. Study shows fruit and vegetable juice consumption may reduce risk of Alzheimers disease
8. Healthy fruits, vegetables highlight joint medical, agricultural research meet in Texas
9. Leafy green vegetables may help keep brains sharp through aging
10. Aloe vera coating may prolong freshness, safety of fruits and vegetables
11. Scientists identify genes responsible for black rot disease in vegetables

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/7/2020)... , ... August 06, 2020 , ... ... participate in the prestigious National STEM Scholar Program, a unique professional development program ... and project support for middle school science teachers nationwide. , Created in partnership ...
(Date:7/31/2020)... ... July 30, 2020 , ... ... Phase II contract awarded by the Joint Science & Technology Office—Chemical and Biological ... is to develop, optimize, and scale-up a highly efficient mammalian cell culture-based bioprocess ...
(Date:7/18/2020)... ... July 16, 2020 , ... A study has ... Invictus Medical Neoasis™ active noise control device to attenuate typical noises in a ... device attenuated the alarm sounds from patient monitors, ventilators and other bedside devices ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... , ... August 12, 2020 , ... ... (EMMA International), a global leader in FDA compliance consulting has been named ... fastest-growing private companies. The list represents a unique look at the most successful ...
(Date:7/31/2020)... ... ... R3 Stem Cell International is now offering patients the opportunity to receive four ... may choose which extremities they would like treated. , Several studies have shown just ... R3 International, umbilical cord tissue is obtained from a lab with a long history ...
(Date:7/31/2020)... Mass. and SOMERSET, N.J (PRWEB) , ... July ... ... leading genome editing company, and Catalent, the leading global provider of advanced delivery ... consumer health products, today announced that they have entered into a strategic partnership ...
(Date:7/22/2020)... ... July 22, 2020 , ... Join experts from ... Sr. Manager Regulatory Solutions, in a one hour live webinar on Thursday, ... body in China for drugs and medical devices. Specifically, for medical devices, the NMPA ...
Breaking Biology Technology:
Cached News: