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양식장 배출물 발효물의 어류 사료 첨가에 따른 넙치, Paralichthys olivaceus의 혈액학적 변동에 미치는 영향
강주찬,지정훈,송승엽,문상욱,강지웅,이영돈,김세재 한국어병학회 2004 한국어병학회지 Vol.17 No.1
본 연구는 우리나라 주요 양식어류인 넙치, Paralichthys olivaceus를 대상으로 육상수조식양식장 배출물 발효물의 어류 사료 첨가에 따른 혈액학적 변동에 미치는 영향을 검토하였다. 젖산균 및 효모를 사용하여 발효한 양식장 배출물의 이화학적 분석을 실시하였고, 발효물을 0.1, 0.5, 1.0 및 5.0% 농도로 8주간 투여하였다. 투여 4주째 및 8주째에 각 투여 구간별로 혈액학적 항목을 중심으로 그 차이를 확인하였다. 배출물 발효농도별 유의한 차이는 나타나지 않았지만, 분석시기에 따른 적혈구수, 혈색소 농도 및 혈색소 지수가 증가하는 경향을 나타내었으나, 주요 혈청 무기 및 유기성분은 배출 발효물 농도별로 유의한 차이는 나타나지 않았다. 또한 혈청 효소학적 조사에서는 조사시기별로 변동은 나타났지만, 동일 조시시기에서 각 구간별 유의한 차이는 나타나지 않았다. 따라서 이러한 육상 약식장 유래의 배출물 발효산물에 대한 다양한 방면의 연구가 진행되어야겠다. Effects of oral administration with fermented product from sewage in land-based seawater fish farm on haematological disturbance in the olive flounder, Paralichthys olivaceus was investigated. After 4 weeks of conditioning with a basal diet, fish were divided into 4 groups and provided experimental diet (0.1,0.5, 1.0 and 2.0%) supplement of fermented sewage for 80 days. Proximal analysis was performed for the product of sewage which was fermented by lactic acid and yeast. RBC count, hemoglobin concentration and hematocrit value were increased according to the treated periods, however, no statistical difference was observed between control and treatment groups. There were no significant difference in serum organic, inorganic compounds and enzyme activities between control and treatment groups. This study hypothesized that the supplement of fermented product from sewage in land-based seawater fish farm might be an additive sup plement for source of fish diet in view of haematological examination. Recycling of the sewage may be an economic artificial sources of diet for fish aquaculture practices.
강심호,전우형,배주영,이정엽 서울시립대학교 부설 서울학연구소 2003 서울학연구 Vol.- No.21
In 1930's, capitalism gradually became established in Chosun. As Chosun's economy was incorporated into the global capitalistic system, the domestic economy became dependent on the international market. During this time, Kyeong-Seong was transformed into a capitalistic city. Various forms of modern facilities appeared, while urban consumerism constituted the city life. Thus, the everyday life in Kyeong-Seong demanded the acceptance of modern culture in order to adapt to the changing environment. Inside the city, people experienced modern civilization and urban consuming life, and came to adjust their form of living and their viewpoint of the world. This thesis examines the advertisement and text that appears in the newspapers, magazines, and other journalistic material of the thirties in order to determine how the commercials, romance, hobby or entertainment, and the newly discovered "pastoral" influenced the contemporary life and mind. Also, we intend to reveal how these factors took form in the contemporary literature. The contemporary Korean writers were inevitably surrounded by the popular and urban sensibility mentioned above. Even though unconsciously, or sometimes through negative criticism, this sensibility was included in their text. Even the nature that was considered to be a replacement of the desolate and inhuman city life was in fact a filtered form of nature - an image constructed by the popular culture and advertisements. Also, the romance described by the sensitive authors often took the form of a consumer love. Meanwhile, judging from the penetration of commercial statements which appears in several works, there was a growing desire to consume the image. Along with the newly adapted hobbies and leisure culture, the Korean life style went through a significant change, and so did the content of the contemporary novels. The urban sensibility formed in Kyeong-seong during the nineteen thirties can be defined as the common popular sensibility attained by people living in a capitalistic consuming culture. It is attitude of setting the commercial image as a model of life, and is the search of individual life in the standardized and uniform life style of the popular culture. Whether they chose to criticize it or saturate themselves in it, the contemporary writers were unavoidably related to this sensibility and life style.
식물화합물 다량 함유 제주조릿대 잎 추출물의 제조와 특성
이주엽(Ju Yeop Lee),고희철(Hee Chul Ko),장미경(Mi Gyeong Jang),김세재(Se Jae Kim) 한국생명과학회 2016 생명과학회지 Vol.26 No.11
조릿대 속 식물의 잎은 한의학적으로 염증, 해열, 이뇨 관련 질환 치료에 사용되어 왔다. 제주조릿대는 제주도 한라산 일대에서만 분포되어있는 토착식물이다. 본 연구에서는 제주조릿대 잎 추출물의 산업적 활용 효율을 높이기 위해 추출방법에 따른 식물화합물의 함량과 그 생리 활성을 비교함으로써 기능성이 강화된 식물화합물 다량 함유 추출물(phytochemical-rich extract; PRE)의 제조방법을 개발하였다. PRE는 열수추출물과 알코올추출물에 비하여 높은 폴리페놀 함량을 나타내었고, 조릿대 주요성분인 p-coumaric acid (44.10 mg/g)와 tricin (5.35 mg/g)의 함량은 열추추출물(p-coumaric 23.39 mg/g, tricin 0.18 mg/g)과 알코올 추출물(p-coumaric 10.8 mg/g, tricin 0.38 mg/g)에 비해 매우 높았다. RPE는 다른 추출물에 비해 총 폴리페놀 함량과 항산화 활성[1,1-diphenyl-2-picrylhydrazy (DPPH) 소거활성, 2,2"-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) 소거활성, nitric oxide (NO) 소거활성, xanthine oxidase 저해활성]이 가장 높았다. 그리고 RPE는 LPS로 자극시킨 RAW 264.7 세포에서 NO 생성(IC50 = 59.1μg/ml)과 혈액 암(HL-60) 세포의 성장을 효과적으로 억제하였다. 본 연구결과는 PRE가 식물화합물을 다량 함유하고 있어 항산화 및 항염소재로서 활용가치가 있음을 제시해 준다. Sasa species leaves have been used in traditional medicine for their anti-inflammatory, antipyretic, and diuretic properties. Sasa quelpaertensis Nakai is a small bamboo grass that grows only on Mt. Halla on Jeju Island, Republic of Korea. This small bamboo grass has recently been the focus of much attention due to its potential biomass as well as its beneficial health effects. In this study, to promote the efficient utilization of the S. quelpaertensis leaf, we established a simple preparation method for phytochemical-rich extract (PRE) by comparing phytochemical contents and biological activities according to extraction methods. high performance liquid chromatography (HPLC) analysis revealed that the contents of two major phytochemicals such as, tricin (5.35 mg/g) and p-coumaric acid (44.10 mg/g) contained in PRE were higher than those in fresh hot water extract (SQH, p-coumaric 23.39 mg/g, tricin 0.18 mg/g) and ethanol extract (SQE, p-coumaric 10.8 mg/g, tricin 0.38 mg/g). The antioxidant activities [1,1-diphenyl-2-picrylhydrazy (DPPH) radical scavenging activity, 2,2"-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid (ABTS) radical scavenging activity, nitric oxide (NO) scavenging activity, and xanthine oxidase inhibitory activity] of PRE were higher than those of SQH and SQE. PRE effectively inhibited NO production in LSP- stimulation RAW 264.7 cells, and the growth of human promyelocytic leukemia (HL-60) cells. These results suggest that PRE has a potential as a promising antioxidant and anti-inflammatory agent.
Estimation of Measurement Uncertainty in Vitamin D Analysis from Domestic Foods
Jun-Yeop Lee,Chang-Wan Lim,Kwang-Eun Jung,Byung-Man Kwak,Ki-Woong Lee,Young-Min Choi,Jin-Ju Park,Sang-Hoon Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Contents of vitamin D in domestic foods were analyzed by high performance liquid chromatography tandem mass spectrometer. The uncertainty of measurement was estimated based on GUM (guide to the expression of uncertainty in measurement) and the Draft EURACHEM/CITAC Guide. The sources of measurement uncertainty, such as sample weight, final sample volume, standard solution, calibration curve and the repeatability, were identified. And that was evaluated for type A and B uncertainty then used as parameters to determine the combined standard uncertainty. An expanded uncertainty was calculated by multiplying the combined standard uncertainty with a coverage factor (k) calculated from the degree of freedom. The content of vitamin D₃ from Squid was 2.34 μg/100 g and the expanded uncertainty by multiplying by the coverage factor (k=2) was 0.11 μg/100 g at approximately 95% confidence level. The most influential uncertainty sources were repeatability and calibration curve.
광물질 혼화재 치환이 고유동 콘크리트의 재료분리 저항성에 미치는 영향
이혁주 ( Lee Hyuk-ju ),이영준 ( Lee Young-jun ),현승용 ( Hyun Seung-yong ),한인덕 ( Han In-deok ),한동엽 ( Han Dong-yeop ),한민철 ( Han Min-cheol ) 한국건축시공학회 2019 한국건축시공학회 학술발표대회 논문집 Vol.19 No.1
In this study, we considered the influence on segregation resistance at the time of substitution of FA and BS, which are substance admixtures of high fluidity concrete. According to the research results, EIS, which is an index of segregation in high fluidity concrete replacement, showed a low value, and the composition also showed a higher value than OPC. Therefore, it is confirmed that the resistance to segregation at the time of admixture replacement of high fluidity concrete is improved.