• 수산경영론집
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• 제53권2호
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• pp.21-41
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• 2022

The effect of change in exchange rates on an economy is very important, especially, to a small open economy like South Korea. I explore whether Free Trade Agreements (FTAs) have positive influences on exchange rate-pass through import price of import market for fishery products in South Korea. Competition among FTA partners is enhanced after FTAs are effective. I expect that the extent to which are exchange rate pass-through (hereafter, ERPT) into import price of fishery products (in terms of Korea currency) would be reduced since the import market for fishery products in South Korea is an oligopolistic market. Specifically, I investigate two research questions with six South Korea's FTA partners-Norway, Thailand, Peru, U.S., China and Vietnam. First, whether the extent to which are exchange rate pass-through into import price of fishery products from six FTA partners would decrase in the post-FTA era; seconds, the size of reduction has a negative relation with the size of their market share in the import market for fishery products in South Korea if it decreases. The empirical results indicate that the degree of ERPT into import price from other FTA partners than Norway has been reduced after FTA, statistically and significantly; however, I do not find the evidence that the size of reduction is related to their market share. The findings in this study imply that FTAs have negative effects on producers' economic welfare in South Korea's fishery industry by reducing the extent to which are exchange rate pass-through as well as reducing tariff barriers.

• 한국식품위생안전성학회지
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• 제36권3호
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• pp.248-256
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• 2021

건조 수산가공식품의 안전성 확보를 위해 2020년 경기도 내 유통 중인 건조 수산가공식품 12품목 120건을 수거하여 방사능(¹³¹I, ¹³⁴Cs, ¹³⁷Cs) 및 중금속(납, 카드뮴, 비소, 수은) 함량을 분석하였다. 모든 시료에서 자연 방사성 핵종 중 하나인 ⁴⁰K만 검출되었으며, 인공 방사성 물질인 ¹³¹I, ¹³⁴Cs, ¹³⁷Cs는 최소검출가능농도(MDA) 이하의 값을 나타내었다. 중금속의 평균 함량[평균±표준편차(최소값-최대값)]은 생물로 환산하였을 때 납 0.066±0.065(N.D.-0.332) mg/kg, 카드뮴 0.200±0.406(N.D.-2.941) mg/kg, 비소 3.630±3.170(0.371-15.007) mg/kg, 수은 0.009±0.011(0.0005-0.0621) mg/kg 이었으며, 수산물에서 중금속 기준이 있는 제품의 경우 모두 기준 규격 이내로 나타났다. 국내산 제품과 수입산 제품의 중금속 함량은, 조개의 카드뮴과 새우의 수은 함량에서만 유의적인 차이를 나타내었다(P<0.05). 본 연구 결과, 유통 중인 건조 수산가공식품에서 방사능 및 중금속은 안전한 수준인 것으로 판단되나, 식품 중 특히 수산물에서 방사능 오염에 대한 국민의 우려가 크기 때문에 국민들의 불안감 해소를 위해 방사능 검사는 지속적으로 필요할 것으로 생각된다. 또 향후 건조 수산가공식품 중에서도 건조된 형태로 직접 섭취 가능한 제품의 중금속 관리 기준 설정을 위한 기초 자료로 활용할 수 있을 것이다.

• 농약과학회지
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• 제18권4호
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• pp.269-277
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• 2014

HPLC-UVD를 이용하여 diflubenzuron이 다종농약다성분 분석법 제2법에 적합한지를 검증하고자 본 연구를 수행하였다. 유효성을 검증하기 위하여 농약이 검출되지 않은 시금치, 엇갈이배추, 가지, 애호박, 청피망, 오이, 참외 등 7종 농산물을 대상으로 직선성, 특이성, 검출한계, 정량한계, 정확성, 정밀성을 확인하였다. Diflubenzuron 표준용액을 0.05-5 mg/kg 농도로 희석하여 분석한 표준검량선의 직선성은($R^2=0.99999$)은 매우 만족할 만한 수준이었다. 검출한계는 0.008 mg/kg, 정량한계는 0.02 mg/kg 이며 회수율은 77.5-105.6%, 상대표준편차는 최대 20% 미만, 정밀도는 intra-day test에서 0.4-1.9%, inter-day test에서 0.7-1.9%를 나타내어 잔류농약분석법에서 허용하는 회수율 기준 70-120% 범위와 상대표준편차 20% 이하의 기준에 적합하였다. LC-MSD를 이용한 재확인 과정을 통해 잔류결과의 신뢰성을 확보하였다. 따라서 유통농산물 중 diflubenzuron의 일상적 검사법으로 빠르고 간편한 다종농약다성분 제2법을 적용할 수 있을 것으로 판단된다.

• Journal of the Korean Statistical Society
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• 제9권2호
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• pp.213-217
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• 1980

This paper aimed at studying an efficient sampling design of the survey for non-consignment fishery products including both marine fisheries and seaculture. An analysis was done on the relationship between precision and sample size. On the basis of the analysis, the sample size was determined to be 1,080 fishery house holds with the expected precision of 4%-5%. The molluscs and seaculture were recognized to be correlated with the non-consignment products. An attempt was made to investigate the coverage of the fish kinds by the sample about 100 fish kinds were found in the 80 selected sample villages, whereas the population includes about 120 in total. This shows that the sample represents the population with satisfaction.

• 수산경영론집
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• 제51권4호
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• pp.47-67
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• 2020

I explore that South Korea's major import fishery product markets-frozen hairtail, frozen mackerel, frozen pollock and frozen squid-are integrated by testing whether there is favorable evidence of the law of one price (LOP). Unlike previous studies on the LOP for fishery product markets, I assume non-zero import costs and include them in a trade model. To explore whether LOP holds for major import fishery product markets in South Korea with non-zero import costs, I utilize a non-linear time-series model, Smooth Transition Autoregressive (STAR) model with the sample periods from January in 2002 to December in 2019. I find that the behaviors of home-foreign price (i.e., import price) differentials of all four major import fishery products are non-linear depending on whether trade occurs and favorable evidence of LOP for each import market in South Korea. These findings indicate that each of South Korea's major import fishery product markets is integrated. They imply that the supply of each major import fishery product-frozen hairtail, frozen pollock, frozen mackerel and frozen squid, and their prices are stable even if there is an economic shock on each market. When it comes to trade policy implications, the Korean trade policy including tariffs or quotas against their import countries for the four major import fishery products may not have influences on their price in the markets.

• 한국식품위생안전성학회지
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• 제33권3호
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• pp.168-175
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• 2018

본 연구에서는 경기도내 유통되는 수산물 42품목 670건에 대한 총수은 노출량평가를 수행하고, 총수은이 0.1 mg/kg 이상 검출된 시료를 대상으로 기존의 식품공전법과 개발시험방법을 적용하여 비교하였다. 유통 수산물에 대한 총수은 모니터링 결과 총수은에 대한 주간추정섭취량(Estimated weekly intake)은 $0.0742{\mu}g/kg$ bw/week인 것으로 조사되었으며, 이는 JECFA에서 제시한 PTWI $4{\mu}g/kg$ bw/week 대비 1.9% 미만으로 수산물 섭취로 인한 수은 위해성은 안전한 수준으로 평가되었다. 전처리 방법 개선에 따른 메틸수은 분석법 개발을 위해 추출, 정제 부분을 기존 식품공전방법과 다르게 진행하였다. Microwave 추출조건은 용액, 시간, 온도 3가지 조건을 고려하였다. Microwave 추출용액은 10% NaCl, 5 N HCl 용액, 11 N HCl 및 0.1 N NaOH를 선정하여 비교한 결과 회수율이 89.8%로 가장 높고 유화현상도 발생하지 않은 10% NaCl 용액으로 선정하였다. Microwave 추출시간은 10~20분 동안 추출시간을 달리하여 회수율을 비교하였으며, 10분 이상 추출 시 회수율은 100% 이상을 나타냈으나 15분 이상 추출 시에는 유기용매와의 층분리가 어려워 추출시간을 15분으로 선정하였다. Microwave 추출온도에 따른 회수율을 알아보기 위해 $40{\sim}60^{\circ}C$에서 추출 후 회수율을 비교하였다. 추출온도가 증가함에 따라 회수율이 증가하였으나 $50^{\circ}C$ 이상의 온도에서는 회수율이 감소하여 $50^{\circ}C$로 최적화 하였다. 식품공전에서 정제과정에 사용되는 L-cystein은 매 실험마다 제조해야하는 번거로움이 있어 이를 대체하기 위해 0.05~5 N NaOH를 이용하였다. NaOH용액의 농도가 높아질수록 회수율이 증가하는 경향을 보였지만 2 N NaOH 이상의 농도에서는 재현성이 떨어지고 거품발생량이 증가하여 2 N NaOH용액을 정제용액으로 선정하였다. 이 실험들을 바탕으로 수산물 중 메틸수은 시료 전처리 방법을 제안하였다. 제안된 시료전처리 방법은 기존 시험방법에 비해 검출효율이 높고 전처리 시간을 절약할 수 있는 것으로 나타났다. 따라서 수산물 전반에 대한 모니터링 수행 시 스크리닝 분석법으로 유용하게 활용할 수 있을 것으로 생각된다. 우리나라의 수산물 섭취량이 세계에서 가장 많은 것으로 알려진 만큼 비의도적 유해물질인 메틸수은에 대한 종합적이고 체계적인 관리가 이루어져야 될 것으로 판단된다.

• 생약학회지
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• 제54권2호
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• pp.80-87
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• 2023

Rancidity changes were examined for 6 herbal medicines, namely Persicae Semen, Armeniacae Semen, Lini Semen, Trichosanthis Semen, Arecae Semen, Myristicae Semen known to have relatively high fat content. In order to reduce rancidity of herbal medicines, samples were stored at 3 different conditions of room, refrigerating and freezing temperatures, and the rancidity was measured for 10 months with every 2 month interval. Fat content was extracted by using ethyl ether, and acid values and peroxide values, which are generally accepted indicators of fat rancidity, were measured. When storing Persicae Semen, Lini Semen and Arecae Semen at room temperature, the acid values increased as the storage period increased, and it was higher than when stored in refrigeration or freezing. The measurement of peroxide value showed more significantly higher initial degree of rancidity when Persicae Semen, Trichosanthis Semen, Arecae Semen and Myristicae Semen were stored at room temperature. It was observed that storing herbal medicines in refrigeration or freezing inhibited their rancidity compared to storing them at room temperature. To investigate the quality changes according to rancidity, the analysis of aflatoxins and indicator components showed that aflatoxins B₁ and B₂ were detected in Armeniacae Semen, Arecae Semen and Myristicae Semen, and the amount of amygdalin was well maintained within the specification standard.

• 생약학회지
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• 제53권3호
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• pp.170-180
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• 2022

Polycyclic aromatic hydrocarbons(PAHs) contents were analyzed by measuring benz(a)anthracene(BaA), chrysene(Chr), benzo(b)fluoranthene(BbF) and benzo(a)pyrene(BaP), and the related risk characterization was conducted for 113 samples out of 14 different agricultural products used for food and medicine. Detection rate of PAHs was 90.3% as a whole, and the highest one was 80.5% for BaP. The detection rate of BaP exceeding the maximum permitted concentration of Rehmanniae Radix Preparata and Rehmanniae Radix, 5.0 ㎍/kg was 1.8%, and the detection rates of BaA, Chr and BbF were within the range of 2.7~10.6%. The highest average concentration of BaA was 3.41 ㎍/kg detected from Lycii Fructus, while those of Chr, BbF, BaP and PAH4(sum of detected BaA, Chr, BbF and BaP) were 5.00, 1.79, 2.36, 12.36 ㎍/kg, respectively, detected from Rehmanniae Radix Preparata. As for the risk characterization on PAHs, the overall MOE(Margin of Exposure) values were measured within the range of 10⁵~10⁷, which is unlikely to cause direct health concerns, but the worring values of MOE were measured 6.57×10⁴ for BaP and 6.10×10⁴ for PAH4 from Rehmanniae Radix Preparata, which may require an improvement plan to reduce BaP contents.

• 한국식품위생안전성학회지
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• 제37권1호
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• pp.1-8
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• 2022

본 연구는 2021년 2월부터 7월까지 잡곡 106건을 수거하여 잔류농약 실태조사를 하였다. 대형, 중소형 및 온라인 유통매장을 중심으로 국내 잡곡 40건과 수입 잡곡 66건을 수거하였고, GC/MSMS, GC/ECD, GC/NPD, LC/MSMS, UPLC/PDA, HPLC/FLD를 이용하여 다종농약 다성분분석법으로 잔류농약 341종을 분석하였다. 잔류농약이 검출된 잡곡은 대형유통매장 1건, 중소형 유통매장 2건, 온라인 유통매장 5건으로 총 8건(7.5%)이었고, 5건(4.7%)에서는 농약잔류허용기준을 초과하였다. 이들 잡곡에서는 MGK-264, chlorpyrifos, thiamethoxam, malathion, piperonyl butoxide, pirimiphos-methyl 등 6종의 농약 성분이 검출되었다. 검출된 잡곡은 강낭콩(1건), 녹두(6건), 수수(1건)이다. 검출된 잡곡 중 농약잔류허용기준을 초과한 품목은 수입 녹두(5건)로 미얀마산이었고, 초과한 농약 성분은 thiamethoxam이었다.

• 수산경영론집
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• 제43권3호
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• pp.75-87
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• 2012

Today, the Korean fisheries is undergoing significant hardships, both domestically and internationally. While declining amount of catch, ascending international oil prices and others pose a compelling challenge to the fishing sector, the ever strengthening influence of international institutions related to fisheries and international trade organizations also compel to bring about myriad of changes in the realm of fishery products. Against the backdrop, this study attempted to examine the fisheries catch, aquaculture, service, processing fields in terms of its rippling effect and of how the industry has been changed by analyzing the past and present through an input-output analysis. As for research methods, 168 items of the input-output tables in 2000, 2005, 2009, and 2010 were integrated to form and classify 32 sectors (28 basic sectors + catch, aquaculture, fishery service, processed fishery products) so as to generate production inducement coefficient, sensitivity coefficient, and impact coefficient. The analysis results revealed that : though the linkage effect of fishery industry was not very sizable, the impact coefficient of the processed fishery products was high; the consumption and investment coefficient sector among production inducement coefficient was on an upturn trend ; the export coefficient was tended to decline. In the future research, it is necessary to carry out a study based on the integration of detailed classification (404 sector) and a study and analysis of fishery industry by different regions through the inter-regional input-output tables. The fishery industry is one of the crucial industries in Korea. The fishery industry is not only important in its own right but also significant as it exerts influence over other industries. Therefore, it is required that there should be more investment and supports for the development of the fishery industry, and pay efforts to ensure that the investment and development could lead to mutual growth for both the fishery and other various industries.