• Korean Journal of Medicinal Crop Science
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• v.14 no.2
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• pp.101-106
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• 2006

We established a practical method for rapid and large-scale production of Valeriana fauriei var. dasycarpa Hara roots by bioreactor culture and confirmed valerenic acids and valepotriates production. We also compared valerenic acids and valepotriates production patterns according to various media conditions. Among the media tested, B5 medium gave the maximum biomass production of 101 g fresh weight, which was a 5.03-fold multiplication rate obtained 4 weeks after inoculation of 20 g of fresh weight. The best production of total valerenic acids $(7.86\;mg/l)$ and valepotriates $(8.96\;mg/l)$ was B5 medium.

• Proceedings of the Plant Resources Society of Korea Conference
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• v.18 no.1
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• pp.165-165
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• 2005

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2003.04a
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• pp.113-113
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• 2003

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.04a
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• pp.186-186
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• 2005

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.314-314
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• 2005

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2005.11a
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• pp.315-315
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• 2005

• Proceedings of the Plant Resources Society of Korea Conference
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• 2007.11a
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• pp.367.2-367.2
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• 2007

• Proceedings of the Korean Society of Plant Biotechnology Conference
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• 2003.10a
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• pp.130-130
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• 2003

• Applied Chemistry for Engineering
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• v.5 no.6
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• pp.911-916
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• 1994

Hollow fiber membrane has been successfully developed as an artificial kidney device in the 1970's. In the early 1970's animal cells were introduced into a hollow fiber membrane cartridge and well propagated in the cartridge. Since then, hollow fiber membrane was utilized as a bioreactor in order to immobilize enzymes as well as to culture microbial cells and plant cells. In this review, the present status and the prospect of hollow fiber membrane bioreactor are investigated in view of cell density and product productivity.

• Applied Chemistry for Engineering
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• v.33 no.5
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• pp.532-537
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• 2022

The need for obtaining treated wastewater that meets high quality standards for discharge or reuse necessitates the use of highly efficient wastewater treatment techniques. In the present study, experiments have been carried out to reduce the concentration level of biological oxygen demand (BOD), chemical oxygen demand (COD), and total dissolved solids (TDS) from the wastewater sample. Treatment of sample of a real municipal wastewater collected from a sewage treatment plant (STP) was carried out in an electrochemical membrane bioreactor (EMBR). The EMBR was operated continuously for five days, and readings were taken at regular intervals. This paper has experimental results conducted in EMBR that indicate reduction of BOD, COD, and TDS levels of up to 32.25%, 29.25%, and 31.93%, respectively. Further, it was observed that a current of magnitude of 0.00752 mA was generated due to the metabolic activities of bacteria present in municipal wastewater, which gradually decreased day by day due to the decay of bacteria.