한국식품영양과학회지 (Journal of the Korean Society of Food Science and Nutrition)

  • 제32권4호
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  • Pages.531-538
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  • 2003
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  • 1226-3311(pISSN)
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  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
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점도 측정법을 이용한 기장(Panicum miliaceum)의 저장 중 감마선 조사 검지 가능성

Potential Detection of γ-Irradiated Panicum miliaceum by Viscosity Measurement during Storage

  • 발행 : 2003.06.01
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초록

감마선 조사한 국산 및 중국산 기장의 저장 중 감마선 조사여부 획인 가능성과 품질 변화를 확인하였다 점도 측정법을 이용한 검지가능성 시험에서 시료의 점도는 조사선량에 따라 감소하였고, $0^{\circ}C$ 및 $20^{\circ}C$에서 9개월간 저장중에도 비조사구와 조사구 간의 구분이 가능하였다. Specific parameter를 설정한 결과, 조사처리에 따라 그 값이 감소하여 조사 여부의 확인이 가능하였으며, 조사선량과 specific parameter 간의 상관성은 저장 중 $r^2$가 0.92 이상으로 높게 나타나 조사 여부의 검지에 활용할 수 있을 것으로 사료된다. 한편 TBA값은 감마선 조사선량과 저장기간에 따라 유의적으로 증가하였다. Hunter color a 및 b 값은 저장기간에 상관없이 조사선량과 유의적인 상관을 나타내었다. 이상과 같이 specific parameter를 이용한 점도 측정법은 방사선 조사 후 저장 중에도 조사 여부의 screening에 적용이 가능할 것으로 판단되며, TBA값의 측정은 판정의 정확도를 높여주는 보조수단으로 기대되었다.

To elucidate the physicochemical change of Panicm miliaceum powders caused by irradiation and identify detection of irradiation, viscosity, TBA value, Hunter color and total viable count were measured after irradiation of Panicum miliaceum powder. Panicum miliaceum powders from Korea and China were irradiated at 0, 2.5, 5, 7.5, 10, 15 kGy using a $Co^{60}$ irradiator and stored for 9 months at $0^{\circ}C$ and $20^{\circ}C$. All samples resulted in decrease for viscosity and specific parameter values by increasing dosage at 50 rpm after irradiation. These values showed dose-dependent relationship (above $r^2$＝0.92) between non-irradiated and irradiated samples during storage. These results suggest that the detection of irradiated Panicum miliaceum at various doses is possible by using viscometric method during storage. Total viable count, TBA value and Hunter color were determined as assistant indices for the samples viscosity measured. Total viable count, TBA values showed dose-dependent relationship (2.5 ~15 kGy). The difference in viscosity along with total viable count, TBA values between non-irradiated samples little or some changed with the lapse of post-irradiation time, but was still distinguishable each other more than 6 months at $0^{\circ}C$ and $20^{\circ}C$ for Panicum miliaceum powders from Korea and China.

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피인용 문헌

  1. Effects of Medium Dose of Gamma Irradiation on Color and Lipid Oxidation of Starches vol.20, pp.1, 2013, https://doi.org/10.11002/kjfp.2013.20.1.97