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Effect of Gamma Irradiation on Shelf-life Extension and Sensory Characteristics of Dak-galbi (Marinated Diced Chicken) during Accelerated Storage

  • Yoon, Yo-Han (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Cho, Won-Jun (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Jin-Gyu (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Park, Jae-Nam (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Song, Beom-Seok (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Jae-Hun (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Byun, Myung-Woo (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Cheon-Jei (Department of Food Science and Biotechnology of Animal Resources, Konkuk University) ;
  • Sharma, Arun K. (Division of Food Technology, Bhabha Atomic Research Centre, Department of Atomic Energy) ;
  • Lee, Ju-Woon (Team for Radiation Food Science & Biotechnology, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • Published : 2009.10.31

Abstract

This study examined the effect of gamma irradiation on shelf-life extension and sensory characteristics of dak-galbi. Commercial dak-galbi sauce was gamma-irradiated at 0, 5, 10, 15, 20, 25, and 30 kGy. The dak-galbi sauce (200 g) was then added to diced chicken (800 g) for cooking, and the cooked dak-galbi samples in vacuum bags were stored at $35^{\circ}C$ for 5 d. Dak-galbi samples were analyzed on d 0, 1, 2, 3, 4, and 5 for microbial analysis (plate count agar), thiobarbituric acid (TBARS) and volatile basic nitrogen (VBN) measurements, and on d 0 for sensory evaluation. On d 0, total bacterial populations were below detection limit after dak-galbi marinated with the gamma-irradiated (${\geq}15\;kGy$) sauces were cooked, and the samples marinated with higher dose irradiated dak-galbi sauce had lower (p<0.05) bacterial populations during storage. TBARS values of the dak-galbi samples marinated with non-irradiated sauce were not different ($p{\geq}0.05$) with those marinated with irradiated sauces on d 0, and the TBARS values increased (p<0.05) during storage at $35^{\circ}C$, regardless of irradiation dose. In the VBN analysis, there was no difference ($p{\geq}0.05$) in VBN values among irradiation doses on d 0, but VBN values decreased (p<0.05) as irradiation dose increased during storage. Moreover, there were no significant differences ($p{\geq}0.05$) in sensory characteristics among irradiation doses. These results indicate that use of gamma irradiation on dak-galbi sauce may be useful in shelf-life extension without compromising the sensory characteristics of dak-galbi.

Keywords

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