- 作者：Darla R. Daniel ; Leslie D. Thompson ; Brent J. Shriver ; Chih-Kang Wu ; Linda C. Hoover
- 关键词：dietary supplements ; coding ; bladder cancer
- 刊名：Journal of the American Dietetic Association
- 出版年：2005
- 出版时间：December 2005
- 年：2005
- 卷：105
- 期：12
- 页码：1927-1932
- 全文大小：157 K
Design
Cottonseed oil, partially hydrogenated canola oil, and partially hydrogenated soybean oil were subjected to a temperature of 177°C for 8 hours per day, and six batches of french fries were fried per day for 5 consecutive days. French fries were weighed before frying, cooked for 5 minutes, allowed to drain, and reweighed. Oil was not replenished and was filtered once per day. Both the oil and the french fries were evaluated to determine fatty acid profiles, trans-fatty acids, and crude fat.
Statistical Analysis
A randomized block design with split plot was used to analyze the data collected. Least-squares difference was used as the means separation test.
Results
No significant differences were found between fries prepared in the three oil types for crude fat. Fatty acid profiles for the french fries remained stable. The french fries prepared in cottonseed oil were significantly lower in trans-fatty acids. The combined total of the trans-fatty acid content and saturated fatty acid content were lower in french fries prepared in cottonseed oil.
Conclusions
Because deep fat frying remains a popular cooking technique, health professionals should educate the public and the food service industry on the benefits of using nonhydrogenated cottonseed oil as an alternative to the commonly used hydrogenated oils.