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http://dx.doi.org/10.5307/JBE.2010.35.2.100

Effects of Electric Current Stimuli and High-Voltage Electric Field Treatments on Brown Rice Germination  

Lim, Ki-Taek (Research Institute for Agriculture and Life Sciences)
Kim, Jang-Ho (Research Institute for Agriculture and Life Sciences, Seoul National University)
SeonWoo, Hoon (Research Institute for Agriculture and Life Sciences, Seoul National University)
Hong, Ji-Hyang (Research Institute for Agriculture and Life Sciences, Seoul National University)
Chung, Jong-Hoon (Dept. of Biosystems & Biomaterials Science and Engineering, Seoul National University)
Publication Information
Journal of Biosystems Engineering / v.35, no.2, 2010 , pp. 100-107 More about this Journal
Abstract
This study was conducted to investigate the effects of electric current stimuli and high-voltage electric field treatments on brown rice germination. The brown rice stimulated by electrical current stimuli, functional electrical stimuli of a pulse type, and high-voltage electric field treatments were observed (Type I, II and III). Treatment Type I was a method of semi-soaking brown rice with electric current stimuli of 0.13 V/cm, 0.19 V/cm, and 0.25 V/cm into Petri-dishes for 72 hours. Type II was a method of semi-soaking brown rice with functional electrical stimuli of a pulse type(DC 1 V, 1 Hz, 5%, and duty cycles of 5%, 20%, and 35%) into Petri-dishes for 72 hours. Type III was a method of water-soaking with high-voltage electric field treatments for 60 hours. High-voltage electric field treatments at 15 kV/cm were also conducted for 2.5 min, 7.5 min, and 10 min, respectively. The germination rate and the sprout growth of brown rice germinated by electric current stimuli with 0.13 V/cm, 0.19 V/cm, and 0.25 V/cm were increased by about 10-15% compared with those of the control group. The germination rate and the sprout growth of brown rice germinated by functional electrical stimuli of pulse type(DC 1 V, 1 Hz, 5% duty cycle) were increased by about 10∼15% compared to those of the control group. Also, the best effective treatment among high-voltage electric field treatments was the 10 min group at 15 kV/cm. The germination rate and the sprout growth of brown rice germinated by this treatment of 10 min at 15 kV/cm were increased by about 10∼20% compared to those of the control group. The treatments of electric current stimuli and high-voltage electric field accelerated the germination rate and sprout growth of brown rice by about 10∼15% compared to those of the control group.
Keywords
Electric current stimuli; Electric field treatments; Brown rice; Germination ratio; Sprout length;
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