Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Monte Carlo Simulation of Irradiation Treatment of Peaches (Prunus persica L. Batsch)

몬테카를로 시뮬레이션을 이용한 복숭아의 방사선 조사

  • Kim, Jongsoon (Dept. of Bio-Industrial Machinery Eng., Pusan Natl. Univ) ;
  • Kim, Dong-Hyun (Dept. of Bio-Industrial Machinery Eng., Pusan Natl. Univ) ;
  • Park, Jong-Min (Dept. of Bio-Industrial Machinery Eng., Pusan Natl. Univ) ;
  • Choi, Won-Sik (Dept. of Bio-Industrial Machinery Eng., Pusan Natl. Univ) ;
  • Kwon, Soon Hong (Dept. of Bio-Industrial Machinery Eng., Pusan Natl. Univ)
  • 김종순 (부산대학교, 바이오산업기계공학과) ;
  • 김동현 (부산대학교, 바이오산업기계공학과) ;
  • 박종민 (부산대학교, 바이오산업기계공학과) ;
  • 최원식 (부산대학교, 바이오산업기계공학과) ;
  • 권순홍 (부산대학교, 바이오산업기계공학과)
  • Received : 2018.10.02
  • Accepted : 2018.12.05
  • Published : 2018.12.31
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Abstract

Food irradiation is important not only in ensuring safety but also improving antioxidant activity of peaches. Our objective was to establish the best irradiation treatment for peaches by calculating dose distribution using Monte Carlo simulation. 3-D geometry and component densities of peaches, extracted from CT scan, were entered into MCNP to obtain simulated dose distribution. Radiation energies for electron beam were 1.35 MeV (low energy) and 10 MeV (high energy). Co (1.25 MeV) and the Husman irradiator, containing three sealed Cs source rods in an annular array, were used for gamma irradiation. At 1.35 MeV electron beam simulation, electrons penetrated well beyond the peach skin, enough for surface treatment for microorganisms and allergens. At 10 MeV electron beam simulation, for top-beam only treatment, doses at the core were the highest and for double beam treatment, the electron energy was absorbed by the entire sample. At Co source, the radiation doses were presented on the whole area. At Cs source, the dose uniformity ratios were 2.78 for one source and 1.48 for three ones at 120 degrees interval. Proper control of irradiation treatment is critical to establish confidence in the irradiation process.

Keywords

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Fig. 1 CT image of a peach

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Fig. 2 Dose distribution of a peach at 1.35 MeV electron beam.

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Fig. 3 Dose distribution of a peach at 10 MeV single electron beam.

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Fig. 4 Dose distribution of a peach at 10 MeV double electron beam.

SOOOB6_2018_v21n6_337_f0005.png 이미지

Fig. 5 Dose distribution of a peach at 1.25 MeV gamma rays.

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Fig. 6 Dose distribution of a peach at 0.66 MeV gamma rays

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