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전통누룩으로부터 분리한 유산균의 포스트바이오틱스 특성 연구
성지연(Ji-Youn Sung),정하림(Ha-Rim Jung),박지인(Ji-In Park),진주희(Ju-Hee Jin),윤동환(Dong-Hwan Yoon) 한국콘텐츠학회 2022 한국콘텐츠학회논문지 Vol.22 No.11
본 연구에서는 전통누룩으로부터 분리된 식물유래 유산균을 대상으로 안전성, 항균제 감수성 및 항균활성 등을 비교·분석하여 포스트바이오틱스로 유용한 유산균을 확보하고자 하였다. 유산균 총 14균주가 누룩으로부터 분리되었는데 분리된 균주 모두 용혈성을 나타내지 않았으며 유해대사산물인 인돌과 phenyl pyruvic acid를 생성하지 않았다. 또한 18종류의 항균제들에 대해 감수성 시험을 한 결과 평균 75.8%의 높은 감수성률을 보였다. 분리된 14균주 중 7균주가 항균활성을 나타냈는데 특히 Weissella cibaria KJ-2와 Weissella cibaria KR-3는 그람양성세균과 그람음성세균에 모두 항균활성을 보였고 항균력 또한 뛰어났다. 따라서 본 연구에서 분리된 Weissella cibaria KJ-2와 Weissella cibaria KR-3 균주는 우수한 포스트바이오틱스 자원으로 활용 가능할 것으로 판단된다. 다만 기능성이 우수한 소재로 인정을 받기 위해서는 세포, 동물 및 인체를 대상으로 한 효능 검증이 추가적으로 진행 되어져야 할 것이다. In this study, we tried to secure lactic acid bacteria useful as postbiotics by comparing and analyzing safety, antimicrobial susceptibility, and antibacterial activity of plant-derived lactic acid bacteria isolated from traditional nuruk. A total of 14 lactic acid bacteria were isolated from nuruk, and none of the isolated strains showed hemolytic properties and did not produce indole and phenyl pyruvic acid, which are harmful metabolites. In addition, as a result of a susceptibility test for 18 types of antibacterial agents, an average high susceptibility rate of 75.8% was shown. Of the 14 isolated strains, 7 showed antibacterial activity. In particular, Weissella cibaria KJ-2 and Weissella cibaria KR-3 showed antibacterial activity against both Gram-positive and Gram-negative bacteria and had excellent antibacterial activity. Therefore, it is judged that the Weissella cibaria KJ-2 and Weissella cibaria KR-3 strains isolated in this study can be utilized as good postbiotic resources. However, in order to be recognized as a material with excellent functionality, efficacy verification on cells, animals, and humans should be additionally conducted.
국가 건물에너지 통합DB 기반 건물부문 온실가스 배출현황
지창윤(Ji, Chang-Yoon),최민석(Choi, Min-Seok),권오인(Gwon, Oh-In),정하림(Jung, Ha-Rim),신성은(Shin, Sung-Eun) 대한건축학회 2020 大韓建築學會論文集 : 構造系 Vol.36 No.4
This study analyzes in detail greenhouse gas emissions in building sector. To this end, this study used data on building characteristics (including building type, region, and construction year) and monthly energy consumptions (including electricity, city gas, and district heat) for all buildings from 2015 to 2018. These data were collected from the National Building Energy Database and the energy consumptions were converted into greenhouse gas (GHG) emissions. The total amount of GHG emissions from the building sector has increased steadily from 2015 (118.1MtCO2eq.) to 2018 (132.6MtCO2eq.). On the other hand, the more recently constructed buildings had lower GHG intensities. This result shows that strengthening building design criteria was effective on the reduction of GHG emissions in buildings, and that the increased buildings contributed to increasing GHG emissions of the building sector. In addition, sales facilities are thought to have the largest reduction potential as they had the highest amount of GHG emissions and GHG intensity. This study is expected to help establish new policies for GHG reduction in building sector as well as to evaluate the effects of existing policies.
이동수(Lee, Dong-Soo),박종일(Park, Jong-Il),김능진(Kim, Neung-Jin),이동영(Lee, Dong-Young),정하림(Jung, Ha-Rim),지창윤(Ji, Chang-Yoon),최민석(Choi, Min-Seok),조성흠(Jo, Sung-Hum),윤영란(Yoon, Young-Ran) 한국건축친환경설비학회 2022 한국건축친환경설비학회 논문집 Vol.16 No.5
According to the revised NDC, the construction sector accounts for a significant portion of the countrys overall greenhouse gas reduction targets by sector. Since detached houses account for a high proportion of all buildings in Korea (about 48%), it is very important to spread low energy small-scale buildings to achieve the national greenhouse gas reduction target. In this study, the construction cost of insulation materials for 110 detached houses that received passive building certification was analyzed. Insulation is a basic construction matter to reduce greenhouse gas by reducing energy consumption of buildings. As a result, the rate of increase in the construction cost of insulation materials for low energy housing compared to general housing was derived according to the structure, total floor area, and number of floors.