• 제목/요약/키워드: abiotic

검색결과 695건 처리시간 0.02초

폐식용유 재활용 제품의 환경성 평가 (Environmental Impact Evaluation of the Waste Cooking Oil Recycling Products)

  • 김태석;김동규;정용현
    • 수산해양교육연구
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    • 제27권2호
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    • pp.516-525
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    • 2015
  • In this study, Life Cycle Assessment(LCA) was applied to the production processes of waste cooking oil recycling products. Recycling products as defined in the Law of Saving of Resources and Recycling Promotion are biodiesel and soap. Weighting result of biodiesel production process showed that the most significant impact potential was abiotic resource depletion(84.17%) followed by global warming(13.93%). In the case of the soap, the most significant impact potential was also abiotic resource depletion(58.59%) followed by global warming(33.71%). In terms of the whole system of the biodiesel production process, methanol showed the largest environmental impact potential(87.35%). While in the case of the soap, sodium chloride showed the largest environmental impact potential(99.99%). This study suggests that there should be improvement of the methanol recovery system in the biodiesel production process and also appropriate use of the major environmental impact materials in both processes.

구기자 현탁 세포배양으로부터 이단계 배양과 Elicitor에 의한 Betaine 생산 (Betaine Production by Two Stage Culture and Elicitor in the Cell Cultures of Lycium chinense Mill)

  • 김병원;노광수
    • KSBB Journal
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    • 제13권5호
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    • pp.569-576
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    • 1998
  • The effects of carbohydrates, hormones and elicitors on both cell growth and betaine production were investigated in the cell cultures of Lycium chinense Mill. The maximum effect of glucose and sucrose was observed in cells cultured in the presence of 3% and 7% for cell growth and betaine production, respectively. The effect of hormones on cell growth and betaine production was prominent in the presence of 10 ${\mu}$M 2, 4-D, 10 ${\mu}$M NAA and 2.5 ${\mu}$M IAA, whereas cell growth and betaine production were excellent at 2.5 ${\mu}$M BA and 10 ${\mu}$M BA, respectively. Abiotic elicitors such as KCI, MnCl2 and NaCl exhibited an inhibitory role on cell growth in all treatment groups. Betaine production was increased according to increase of concentration of abiotic elicitors. methanol-soluble and insoluble components as biotic elicitor remarkably inhibited cell growth from 2 mg and 6 mg, respectively. Betaine production was increased maximally at 2 mg of biotic elicitors. When growth medium was switched to production medium at two stage culture, it resulted that cell fresh weight and dry weight decreased but betaine content increased about 2.2-fold.

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Platform of Hot Pepper Stress Genomics: Indentification of Stress Inducible Genes in Hot Pepper (Capsicum annuum L.) Using cDNA Microarray Analysis

  • Chung, Eun-Jo;Lee, Sanghyeob;Park, Doil
    • 한국식물병리학회:학술대회논문집
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    • 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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    • pp.81.1-81
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    • 2003
  • Although plants have evolved to possess various defense mechanisms from local biotic and abiotic stressors, most of yield loss is caused by theses stressors. Recent studies have revealed that several different stress responsive reactions are inter-networking. Therefore, the identification and dissection of stress responsive genes is an essential and first step towards understanding of the global defense mechanism in response to various stressors. For this purpose, we applied cDNA microarray analysis, because it has powerful ability to monitor the global gene expression in a specific situation. To date, more than 10,000 non-redundant genes were identified from seven different cDNA libraries and deposited in our EST database (http://plant.pdrs.re.kr/ks200201/pepper.html). For this study, we have built 5K cDNA microarray containing 4,685 unigene clones from three different cDNA libraries. Monitoring of gene expression profiles of hot pepper interactions with biotic stress, abiotic stresses and chemical treatments will be presented. Although this work shows expression profiling at the sub-genomic level, this could be a good starting point to understand the complexity of global defense mechanism in hot pepper.

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LCA 기법을 이용한 소맥분 생산 공정의 환경 영향 평가 (Environmental Impacts Assessment of the Wheat Flour Production Process Using the Life Cycle Assessment Method)

  • 추덕성;권혁구;김종규;이장훈
    • 한국환경보건학회지
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    • 제34권1호
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    • pp.62-69
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    • 2008
  • The life cycle assessment method for environmental impact assessment was used, in this study, to assess the production process of wheat flour which is the most important material in the food industry. Environmental impact assessments were compared between that of the Ministry of Environment, Republic of Korea (method I) with that of the Ministry of Commerce, Industry and Energy (method II). Life cycle inventories (LCI) was performed using internal and external databases and the production statistics database of company S. The procedure of life cycle impact assessment (LCIA) was followed in terms of classification, characterization, normalization and weighting to identify the key issues. The impact categories of method I were divided into 8 categories with consideration of : abiotic resources depletion, global warming, ozone depletion, photochemical oxidant creation, acidification and eutrophication. The impact categories of method II were divided into 10 categories with consideration of: abiotic resources depletion, global warming, ozone depletion, photochemical oxidant creation, acidification, eutrophication, human toxicity, freshwater aquatic ecotoxicity, marine aquatic ecotoxicity and terrestrial ecotoxicity.

Characterization of an Abiotic Stress-inducible Dehydrin Gene, OsDhn1, in Rice (Oryza sativa L.)

  • Lee, Sang-Choon;Lee, Mi-Yeon;Kim, Soo-Jin;Jun, Sung-Hoon;An, Gynheung;Kim, Seong-Ryong
    • Molecules and Cells
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    • 제19권2호
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    • pp.212-218
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    • 2005
  • A full-length 1.1 kb cDNA, designated Oryza sativa Dehydrin 1 (OsDhn1), was isolated from the seed coat of rice. The deduced protein is hydrophilic and has three K-type and one S-type motifs (SK3-type), indicating that OsDhn1 belongs to the acidic dehydrin family, which includes wheat WCOR410 and Arabidopsis COR47. Expression of OsDhn1 was strongly induced by low temperature as well as by drought. Induction of OsDhn1 by cold stress was clearcut in the roots of seedlings and the epidermis of palea and lemma. OsDhn1 was also up-regulated in UBI::CBF1/DREB1b transgenic plants indicating that it is regulated by the CBF/DREB stress signaling pathway.

작물 단백질체 분석을 위한 이차원 전기영동 사용법 (Crop proteomics: Practical method for high resolution of two-dimensional electrophoresis)

  • 김유지;정화진;이수지;김선태
    • Journal of Plant Biotechnology
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    • 제39권1호
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    • pp.81-92
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    • 2012
  • 단백질체학에서 이차원 전기영동 (2-DGE)은 고해상도 단백질 분리가 가능한 중요 기술 중 하나이다. 본 논문에서는 2-DGE 이미지 분석 일치도를 향상시킴으로써 작물 단백질 검출과 정량분석이 가능하도록 하는 전반적인 주요 장비, 시약 등을 자세히 기술한 프로토콜을 제시하고 있다. 이 프로토콜은 식물의 발달, 생물학적, 비생물학적 스트레스 반응 등과 관련된 작물 단백질 바이오마커를 개발하기 위한 목적에서 2-DGE를 처음 시도하는 연구자들에게 유용할 것으로 기대한다.

비목질 재료의 바이오매스화를 위한 환경 스트레스 담배줄기의 화학조성 (Chemical Characteristics of Abiotic-Stressed Tobacco Stems for the Utilization of a Non-Wooden Biomass)

  • 김강재;홍성범;엄태진
    • 펄프종이기술
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    • 제48권1호
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    • pp.53-60
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    • 2016
  • Abiotic-stressed tobacco stems as a non-wooden biomass were analyzed for their chemical characteristics. Light-stressed tobacco stems (LST) have a relatively high nitrogen concentration, much more extractive content, and a similar amount of lignin and higher contents of acid sugars than those of Non stressed tobacco (NST). It also has low cellulose crystallinity and a high degree of condensation. Guaiacyl units having a lower molecular weight distribution consist of rich lignin. Tension stressed tobacco (TST) growth differentiation under tensile stress was significantly different between normal tissue and cell walls, with the exception of the slightly higher cellulose crystallinity observed for.

LCA를 이용한 유리병 재활용의 환경영향 평가 (Environmental Impact Evaluation for Glass Bottle Recycle using Life Cycle Assessment)

  • 백승혁;김형진;권영식
    • 한국환경과학회지
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    • 제23권6호
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    • pp.1067-1074
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    • 2014
  • Life Cycle Assessment(LCA) has been carried out to evaluate the environmental impacts of glass bottle recycle. The LCA consists of four stages such as Goal and Scope Definition, Life Cycle Inventory(LCI) Analysis, Life Cycle Impact Assessment(LCIA), and Interpretation. The LCI analysis showed that the major input materials were water, materials, sand, and crude oil, whereas the major output ones were wastewater, $CO_2$, and non-hazardous wastes. The LCIA was conducted for the six impact categories including 'Abiotic Resource Depletion', 'Acidification', 'Eutrophication', 'Global Warming', 'Ozone Depletion', and 'Photochemical Oxidant Creation'. As for Abiotic Resource Depletion, Acidification, and Photochemical Oxidant Creation, Bunker fuel oil C and LNG were major effects. As for Eutrophication, electricity and Bunker fuel oil C were major effects. As for Global Warming, electricity and LNG were major effects. As for Ozone Depletion, plate glasses were major effects. Among the six categories, the biggest impact potential was found to be Global Warming as 97% of total, but the rest could be negligible.