Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Far Infrared Rays Drying Characteristics of Tissue Cultured Mountain Ginseng Roots

산삼배양근의 원적외선 건조특성

  • Li, H. (Agriculture Science & Technology Research Institute of Chungbuk National University) ;
  • Kwang, T.H. (Agriculture Science & Technology Research Institute of Chungbuk National University) ;
  • Ning, X.F. (Dept. of Biosystems Engineering, Chungbuk National University) ;
  • Cho, S.C. (Dept. of Biosystems Engineering, Chungbuk National University) ;
  • Han, C.S. (Dept. of Biosystems Engineering, Chungbuk National University)
  • Published : 2009.06.25
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Abstract

This study was conducted to investigate the drying characteristics of tissue cultured mountain ginseng roots. The far infrared rays dryer of a double blast system used for this experiment can control the drying parameters such as far infrared heater temperature and air velocity. The far infrared rays drying tests of tissue cultured mountain ginseng roots were performed at air velocity of 0.4, 0.6, 0.8 m/s, under drying air temperature of 50, 60, and $70^{circ}C$, respectively. The results were compared with one obtained by the heated air drying method. The drying characteristics such as drying rate, color, energy consumption, saponin components and antioxidant activities were analyzed. The results showed that the drying rate of far infrared rays drying was faster than that of heated air drying and due to high temperature of drying air and fast air velocity, the far infrared rays drying of double blast type was superior to the heated air drying. The value of the color difference for heated air drying was 10.11${\sim}$12.99 and that of far infrared rays drying was in the range of 7.05${\sim}$7.54, which was in the same drying condition, also energy consumption of far infrared rays drying was in the range of 3575${\sim}$6898 kJ/kg-water. At the same time, the antioxidant activities using far infrared rays drying were higher than those using heated air drying.

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References

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