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연구논문 : 13C NMR 분석 및 지방산 분석을 통한 어유의 종류 구분 및 사용 실태에 관한 연구
조은아 ( Eun Ah Cho ),임성준 ( Sung Jun Lim ),오태헌 ( Tae Heon Oh ),안현주 ( Hyun Joo Ahn ),육수진 ( Soo Jin Yuk ),최진욱 ( Jin Uk Choi ),차윤환 ( Yun Hwan Cha ),이영상 ( Yuung Sang Lee ) 한국식품영양학회 2013 韓國食品營養學會誌 Vol.26 No.3
This study estimates the classification criteria which distinguishes the types of omega-3 health functional foods, fish oils and fish oil usages through 13C-NMR spectra and fatty acids contents analysis. The major fatty acids of omega-3, eicosapentaenoic acid (EPA, C20:5) and docosahexaenoic acid (DHA, C22:6) are being analyzed. 10 ethyl ester (EE) forms and 10 triglyceride (TG) forms are the most common types of fish oils for 20 omega-3 products. Gas chromatography (GC) analysis generally shows the matching EPA and DHA contents of the products listed on the notation. But EE form contents of EPA and DHA are higher and are more varied than the TG form. Most of the samples of EPA/DHA ratio show different content ratios of indicated on the products when comparing with standards. The 13C-NMR analysis of EPA and DHA on sn-1,3 and sn-2 carbonyl peak position with fish oil triglycerides display whether the reconstituted triglycerides (rTG) are being confirmed or not. As a result of the 9 TG form, the 10 TG products showed similar values: EPA sn-1, 3; 13.46~15.66, sn-2; 3.00~4.52, DHA sn-1, 3; 2.43~4.40, sn-2; 3.84~6.36. But one product showed lower contents (EPA: sn-1, 3; 5.88, sn-2; 2.86, DHA sn-1, 3; 2.29, sn-2; 5.95) of EPA, thus it can be considered a different type of oil and only matched six products according to the label. This study is intended to provide basic materials which identify the status for the types and quality of omega-3 fish oil products according to fatty acids profiles and the 13C-NMR spectrum confirmed the location specificity of EPA and DHA.
지하수자원기술의 경제적 파급효과분석 사례연구 - 대도시지역(부산, 울산, 광주) 지하수오염저감기술연구사업을 중심으로 -
안은영,김성용,이재욱,손병국,김정찬,신중호,Ahn Eun-Yuung,Kim Seong-Yong,Lee Jae-Wook,Son Byeong-Kook,Kim Jeong-Chan,Synn Joong-Ho 한국지하수토양환경학회 2005 지하수토양환경 Vol.10 No.1
1998년부터 2002년까지 한국지질자원연구원의 기본사업으로 5년간 수행한 대도시 지역 지하수 오염저감기술연구사업의 경제적 파급효과를 조건부가치측정법을 활용하여 연구사업 성과의 비용, 편익, 순현재가치, 비용편익비, 내부수익률을 산정하였다. 분석과제의 주요성과 중 계량화가 가능한 직접 편익은 지하수 음용화 시설 구축에 따른 편익 및 지하수 데이터 가치 편익 두 가지로 분석되었다. 이들 편익에 경제적 파급효과를 2002년도 현재가치로 환산한 결과, 할인율 $10\%$에서 비용은 50.9억원, 편익은 676.9억원, 순현재가치는 626.0억원, 비용편익비는 13.3, 내부수익율은 $152\%$로 나타났다. For economic impact analysis on a R&D project of groundwater remediation in the metropolitan areas conducted as a fundamental research programme of KIGAM from 1998 to 2002, benefit/cost ratio(BCR), net present value(NPV), and internal rate of return(IRR) were calculated using a contingent valuation method(CVM). Measurable direct benefit parameters among the major outputs of this project consist of setup of drinking water facilities and groundwater information data valuation. In this study, economic impact of the project in NPV of year 2002, with applying a discount rate of $10.0\%$, was identified and estimated as 5.09 billion won in cost, 67.69 billion won in benefit, 62.60 billion won in NPV, 13.3 points in BCR, and $152\%$ in IRR, respectively.