The effect of different cooking processes on stable C, N, and H isotopic compositions of beef
Jiuqing Zhou1, Boli Guo2, Yimin Wei2
1Key Laboratory of Agriculture Product Processing and Quality Control, Ministry of Agriculture, Institute of Agro-Product Processing Science and Technology, Chinese Academy of Agricultural Sciences, P.O. Box 5109, Beijing 100193, PR China; College of Food Science and Engineering, Northwest Sci-Tech University of Agriculture and Forestry, No. 28, Xinong Road, Yangling 712100, PR China.
Abstract:
The variability in the stable C, N, and H isotopic composition caused by different beef processing operations (boiling, frying, and roasting) was studied. The aim was to evaluate the stability of stable isotopic fingerprint information during the beef cooking process. The δ(13)C, δ(15)N, and δ(2)H values for raw, boiled, fried and roasted beef were measured, and the differences in the stable isotopic composition between raw and processed beef products were assessed. The results indicated that the δ(13)C and δ(15)N values in raw beef were not significantly different compared with processed beef, but the δ(2)H values were significantly higher in processed beef than in raw beef. In general, boiling, frying, and roasting had no significant effect on δ(13)C and δ(15)N values, but the δ(2)H value of processed beef increased.
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