• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.140-140
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• 2017

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.263-263
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• 2022

물봉선속(Impatiens L.)은 일년생 또는 다년생 초본으로 우리나라에 5-7종이 분포한다. 물봉선의 화장품용 항산화제 및 천연 방부제로서의 유용성이 밝혀졌으며, 최근 항염, 항산화 등 생리활성에 대한 연구가 국내 자생하는 물봉선 및 노랑물봉선을 대상으로 수행된 바 있으나 이하 분류군에 대한 연구는 미비한 실정이다. 본 연구에서는 국내 자생하는 물봉선속 분류군들의 항산화활성과 생리 활성물질의 함량을 분석하고 지역 간 분류군별 차이를 확인하고자 하였다. 따라서 국내 자생하는 물봉선속 분류군들의 항산화활성을 검정하기 위하여 DPPH, ABTS, TPC, TFC 4가지 방법을 이용하여 분석하였다. 국내 자생하는 물봉선속 5분류군 가야물봉선(Impatiens atrosanguinea (Nakai) B.U.Oh & Y.P.Hong), 노랑물봉선(Impatiens noli-tangere L), 물봉선(Impatiens textorii Miq), 미색물봉선(Impatiens noli-tangere var. pallescens Nakai), 처진물봉선(Impatiens furcillata Hemsl)이 12개 지역에서 수집되었으며, 잎 추출물(70% 에탄올)에 대해 분석되었다. 물봉선속 분류군들의 잎 추출물의 DPPH 라디칼 소거 활성 검정 결과 가야물봉선(4.91 ± 3.00 mgAAE/g)이 가장 높았고 처진물봉선(1.77 ± 0.55 mgAAE/g)이 가장 낮았으며, ABTS의 경우 가야물봉선(3.14 ± 1.35 mgAAE/g)로 가장 높았고 미색물봉선(1.87 ± 0.16 mgAAE/g)이 가장 낮았다. TPC의 경우 미색물봉선(5.48 ± 1.05 ugGAE)이 가장 높았고 노랑물봉선(2.78 ± 1.98 ugGAE)이 가장 낮았으며, TFC의 경우 물봉선(0.70 ± 0.20 ugGAE/g)이 가장 높았고 노랑물봉선(0.45 ± 0.08 ugGAE/g)이 가장 낮게 나타났다. 수집지역별로는 각각 DPPH와 ABTS의 경우 노랑물봉선, TPC의 경우 가야물봉선, 노랑물봉선, 물봉선, TFC의 경우 처진물봉선이 지역별 차이를 보였다. 이번 연구 결과를 토대로 국내 자생하는 물봉선속 분류군 별 항산화활성과 생리활성물질 차이를 확인할 수 있었고 추후 유용 소재로써의 이용과 우수 개체선발에 도움이 될 것으로 사료 된다.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2023.04a
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• pp.12-12
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• 2023

Plant biomass, or lignocellulose, is one of the most abundant natural resources on earth. Lignocellulosic biomass, such as agricultural and forestry residue, serves as a renewable feedstock for microbial cell factories due to its low price and abundant availability. However, the recalcitrance of lignocellulosic biomass requires a pretreatment process prior to microbial fermentation, from which fermentable sugars including xylose and glucose are generated along with various inhibitory compounds. The presence of furan derivatives, such as 5-hydroxymethyl-2-furaldehyde and 2-furaldehyde (furfural), hampers the microbial conversion of lignocellulosic biomass into value-added commodities. In this study, furfural tolerance was improved by investigating the detoxification mechanism in non-model yeast. The genes encoding aldehyde dehydrogenases were overexpressed to enhance furfural tolerance and resulted in improving cell growth and lipid production that can be converted into biofuel. Taken together, this approach contributes to the understanding of the reducing toxicity mechanism of furfural by the aldehyde dehydrogenases and provides a promising strategy that the use of microorganism as an industrial workhorse to treat efficiently lignocellulosic biomass as sustainable plant derivatives.

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.18 no.2_spc
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• pp.305-315
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• 2020

For geological disposal of radioactive wastes, a method was proposed to evaluate the radionuclide transport in the biosphere by calculating the elapsed time of nuclide migration. The radionuclides were supposed to be introduced from a natural barrier and reached a large surface water body following a groundwater flow in a shallow subsurface. The biosphere was defined as a shallow subsurface environment that included aquifers on a host rock. Using the proposed method, a calculation algorithm was established, and a computer code that implemented the algorithm was developed. The developed code was verified by comparing the simulation results of the simple cases with the results of the analytical solution and a public program, which has been widely used to evaluate the radiation dose using the radionuclide transport near the surface. A case study was constructed using the previous research for radionuclide transport from the hypothetical geological disposal repository. In the case study, the code calculated the mass discharge rate of radionuclide to a stream in the biosphere. Because the previous research only demonstrated the transport of radionuclides from the hypothetical repository to the host rock, the developed code in the present study could help identify the total transport of radionuclide along the complete pathway.

• 한국생태학회:학술대회논문집
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• 1998.05a
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• pp.86.1-86.1
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• 1998

• Air Cleaning Technology
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• v.29 no.2
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• pp.21-33
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• 2016

• Proceedings of the Korea Society of Environmental Biology Conference
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• 2004.05a
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• pp.18-18
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• 2004

• Proceedings of the Zoological Society Korea Conference
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• 1996.10a
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• pp.98.2-98
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• 1996

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.298.2-298
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• 2000

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.10a
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• pp.167-167
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• 2018