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http://dx.doi.org/10.5851/kosfa.2011.31.4.580

Effect of Gamma-Irradiation on Trans Fatty Acid, Free Amino Acid and Sensory Evaluation of Dry-fermented Sausage  

Kim, Il-Suk (Department of Animal Resources Technology, Gyeongnam National University of Science and Technology)
Yang, Mi-Ra (Department of Animal Resources Technology, Gyeongnam National University of Science and Technology)
Jo, Cheorun (Department of Animal Science and Biotechnology, Chungnam National University)
Ahn, Dong-Uk (Department of Animal Science, Iowa State University)
Kang, Suk-Nam (Department of Animal Resources Technology, Gyeongnam National University of Science and Technology)
Publication Information
Food Science of Animal Resources / v.31, no.4, 2011 , pp. 580-587 More about this Journal
Abstract
In this study, the effects of gamma-irradiation (1, 2 and 4 kGy) on texture profiles, fatty acid composition, free amino acids and sensory evaluation of dry-fermented sausage were evaluated. The hardness and adhesiveness of irradiated samples were significantly lower (p<0.01) than that of the control, while the gumminess of samples irradiated with 2 and 4 kGy was higher than the other tested samples (p<0.01). The sample irradiated at 4 kGy had a higher saturated fatty acid (SFA) content (C14:0, C16:0, C18:0) and significantly lower (p<0.05) unsaturated fatty acid content (UFA) (C16:1, C18:1, C18:3), trans, n-3 and n-6 fatty acid than the non-irradiated sample. Gamma-irradiation resulted in an increase (p<0.05) in phosposerine, aspartic acid and glutamic acid and a decrease (p<0.05) in glutamic acid in free amino acids. For the samples irradiated at 4 kGy, the sulfur odor and fat pungent flavor were significantly higher (p<0.05) and the moldy odor and moldy flavor were significantly lower than the control sample. In conclusion, gamma-irradiation had a significant effect on the texture profiles, fatty acid composition and sensory evaluation of dry-fermented sausage.
Keywords
gamma-irradiation; texture profile; fatty acid; free amino acid; sensory evaluation;
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