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동아시아식생활학회 동아시아식생활학회지 東아시아 食生活學會誌 第18卷 第6號
발행연도
2008.12
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1,056 - 1,062 (7page)

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To evaluate the effect of irradiation on restructured pork jerky containing paprika and Japanese apricot extracts, the quality of protein was determined in vitro based on the formation of trypsin indigestible substrate inhibitor (TIS) and the computed protein efficiency ratio (C-PER) as determined based on the protein digestibility and amino acid analysis. In addition, we compared the effects of electron beam irradiation to those of gamma irradiation. Approximately 3 % of the moisture content of pork jerky was reduced in response to irradiation with 3 kGy administered using an electron beam however, no additional reduction was observed in samples that were subjected to higher doses of irradiation. In addition, there were no notable differences in the crude protein and fat content of pork jerky samplesthat were subjected to irradiation, regardless of dose. Furthermore, the total amino acids profiles did not change in response to electron beam irradiation. However, the in vitro protein digestibility increased by 7% in response to 3 kGy of electron beam irradiation and 5 kGy of gamma irradiation, but no significant changes in digestibility were not observed in response to treatment with higher doses. TIS quantified as trypsin inhibitors were formed in response to irradiation using the electron beam (3 kGy) and gamma rays (5 kGy), although there was a slight reduction in theproduction of TIS inhibitors in samples irradiated with higher doses. Moreover, only samples irradiated with 10 kGy (electron beam and gamma ray) showed higher TBA values thanthose of the control samples. Finally, the C-PERs (2.50~2.60) were greater in all of the irradiated pork jerky samples than in the control samples (2.22). Taken together, these results suggest that electron beam irradiation and the incorporation of extracts (paprika and Japanese apricot) may be useful methods of improving the nutritional quality of pork jerky.

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