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Development of a Method Based on ESR Spectroscopy for the Identification of Irradiated Beef, Pork, and Chicken Meats
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  • Development of a Method Based on ESR Spectroscopy for the Identification of Irradiated Beef, Pork, and Chicken Meats
  • Development of a Method Based on ESR Spectroscopy for the Identification of Irradiated Beef, Pork, and Chicken Meats
저자명
Park. Yong-Dae,Kim. Dong-Yong,Jin. Chang-Hyun,Yang. Hee-Sun,Choi. Dae-Seong,Yook. Hong-Sun,Byun. Myung-Woo,Jeong. Il-Yun
간행물명
Food science and biotechnology
권/호정보
2011년|20권 2호|pp.367-370 (4 pages)
발행정보
한국식품과학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The electron spin resonance (ESR) spintrapping method for the detection of irradiated beef, pork, and chicken was studied using a ${alpha}$-(4-pyridyl-1-oxide)-N-tert-butylnitrone (POBN) spin trapper in the dose of 0.5-7 kGy. Irradiation caused a significant increase in the ESR signal intensity of samples with hyperfine coupling constants of $a^N$=1.57 mT and $a^H$=0.25 mT, which correspond to lipid-derived radicals. In contrast, un-irradiated samples exhibited a weak ESR signal with no hyperfine coupling constants. The irradiation-induced lipid radical stability vs. temperature was also studied at room temperature, -4 and $-18^{circ}C$ using 3 kGy irradiated beef. Temperature did not affect ESR signal intensity or the hyperfine coupling constants. To investigate the applicability of the proposed procedure for pork and chicken, a comparison of the spectra at the hyperfine coupling constants confirmed the presence of lipid-derived radicals in the samples.