• 한국식품위생안전성학회지
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• 제32권1호
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• pp.42-49
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• 2017

본 연구의 목적은 경기도 내 유통되고 있는 수산물(심해성 어류, 다랑어류 및 새치류) 및 어류가공품의 총수은 및 메틸수은 오염도를 알아보기 위해 실시하였다. 수산물 101건과 어류가공품 44건을 수거하여 수은분석기 및 가스크로마토그래피 전자포획검출기를 사용하여 분석하였다. 수산물은 모두에서 총수은이 검출되었고 메틸수은은 92건에서 검출되어 91.1%의 검출률을 나타내었다. 총수은과 메틸수은의 함량은 각각 새치류 $1.968{\pm}0.505$, $0.496{\pm}0.057mg/kg$, 심해성어류 $0.665{\pm}0.091$, $0.252{\pm}0.033mg/kg$, 다랑어류 $0.577{\pm}0.085$, $0.218{\pm}0.025mg/kg$순으로 높게 나타났으며, 황새치의 평균값이 총수은은 1.968 mg/kg, 메틸수은은 0.496 mg/kg으로 가장 높았다. 총수은 대비 메틸수은 함량은 심해성 어류인 쏨뱅이류가 66.5%로 가장 높았다. 어류가공품의 총수은 메틸수은함량은 원육함량 100%인 냉동식품이 가장 높았으며 원재료 함량과 비례하여 나타났다. 심해성 어류, 다랑어류 및 새치류를 통한 총수은 및 메틸수은의 주간섭취량은 JECFA에서 설정한 PTWI의 4.72, 5.24%로 조사된 어류를 통한 우리나라 국민들의 노출량은 안전한 것으로 나타났다.

• 한국축산식품학회지
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• 제33권2호
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• pp.239-243
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• 2013

Salmonella Enteritidis is responsible for causing foodborne diseases upon consumption of egg products. While cases of S. Enteritidis isolation from eggs have been reported in other countries, no such cases have previously been reported in Korea. In this study, we report the first isolation and identification of S. Enteritidis from domestically distributed eggs in Korea. Eggs were collected from eight countrywide grocery stores during different seasons between 2011 and 2012. Egg contents and washing solution of egg shells were incubated in buffered peptone water, and the enriched broth was further enriched in tetrathionate broth and Rappaport-Vassiliadis. The secondary enriched broth was streaked on xylose lysine desoxycholate agar. The suspected colonies were confirmed to S. Enteritidis by a biochemical test, serotyping, and PCR test. Genetic relatedness among the isolates was analyzed using Diversilab Salmonella kit. Three strains of S. Enteritidis were isolated from egg contents and egg shells collected from grocery stores of the Eumseong-city in the fall of 2011. All three stains showed resistance to chloramphenicol, streptomycin, nalidixic acid, and ampicillin by the disk diffusion method. In addition, the isolates showed more than 99% DNA homology, indicating that they were presumably identical strains. Therefore, there is a requirement to monitor and control against S. Enteritidis from eggs in Korea.

• 한국환경농학회지
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• 제35권3호
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• pp.211-215
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• 2016

BACKGROUND: The commercial biopesticides containing Chenopodium ambrosioides L. extracts which have been registered as one of the ingredients of the commercial biopesticide by the organic agriculture materials, and have been widely used in Republic of Korea. However, the quantitative analysis method of the active substances for the commercial biopesticides containing C. ambrosioides L. extract has not been conducted.METHODS AND RESULTS: To analyze the quantitative analysis of ascaridole, carvacrol, and p-cymene as active substances of C. ambrosioides L. extract, hydrophilic lipophilic balance cartridge was used for solid phase extraction. The active substances were analyzed by the gas chromatography with flame ionization detector. The limit of quantitation values of ascaridole, carvacrol, and p-cymene were 10, 5, and 2 mg/L, and the recovery rates were 96.3, 84.0, and 82.5% in liquid products and 98.3, 99.1, and 97.3% in solid products, respectively. The total content of ascaridole, carvacrol, and p-cymene in the commercial biopesticides was ranged from 0.08 to 12.75%.CONCLUSION: From these results, this method was suitable for the quantitative analysis of the active substances of commercial biopesticides containing C. ambrosioides L. extract.

• The Plant Pathology Journal
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• 제40권1호
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• pp.73-82
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• 2024

Gardenia (Gardenia jasminoides) is a popular and economically vital plant known for its ornamental and medicinal properties. Despite its widespread cultivation, there has been no documentation of plant viruses on gardenia yet. In the present study, gardenia leaves exhibiting symptoms of plant viral diseases were sampled and sequenced by both metatranscriptome and small RNA sequencing. As a consequence, bean common mosaic virus (BCMV) was identified in gardenia for the first time and named BCMV-gardenia. The full genome sequence of BCMV-gardenia is 10,054 nucleotides (nt) in length (excluding the poly (A) at the 3' termini), encoding a large polyprotein of 3,222 amino acids. Sequence analysis showed that the N-termini of the polyprotein encoded by BCMV-gardenia is less conserved when compared to other BCMV isolates, whereas the C-termini is the most conserved. Maximum likelihood phylogenetic analysis showed that BCMVgardenia was clustered closely with other BCMV isolates identified outside the leguminous plants. Our results indicated that the majority of BCMV-gardenia virus-derived small interfering RNAs (vsiRNAs) were 21 nt and 22 nt, with 21 nt being more abundant. The first nucleotide at the 5' termini of vsiRNAs derived from BCMV-gardenia preferred U and A. The ratio of vsiRNAs derived from sense (51.1%) and antisense (48.9%) strands is approaching, and the distribution of vsiRNAs along the viral genome is generally even, with some hot spots forming in local regions. Our findings could provide new insights into the diversity, evolution, and host expansion of BCMV and contribute to the prevention and treatment of this virus.

• 농업과학연구
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• 제39권2호
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• pp.263-270
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• 2012

The vitalization of Agro-industrial complex could be an alternative to enhance farmers off-farm income and overcome FTA's impacts on the import of agricultural products. However, it is evaluated the governmental policy on the Agro-industrial complex has not been successfully done as expected. The Agro-industrial complex started to be composed in 1984 and the 427 Agro-industrial complex have been composed nationwide by 2011. Meanwhile, three Agro-industrial complex where 61 factories are running have been composed and two Agro-industrial complex are being under construction in Seocheongun as of 2011. It is investigated that there are constraints in the government supporting systems for Agro-industrial complex. They are; Aged and poor infrastructure facilities, Weak marketing competition, Scattered supporting agencies, and Poor loan system, etc. In this respect, the policy of supporting system was suggested and recommended to vitalize Agro-industrial complex in the study. They are; Better loan system, Improving aged facilities, Marketing support, Assisting technology, Suppling labor power, and Forming factory-network, etc.

• Asian-Australasian Journal of Animal Sciences
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• 제30권10호
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• pp.1456-1463
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• 2017

Objective: To investigate the effect of host genetics on gut microbial diversity, we performed a structural survey of the fecal microbiota of four purebred boar pig lines: Duroc, Landrace, Hampshire, and Yorkshire. Methods: The V3-V4 regions of the 16S rRNA genes were amplified and sequenced. Results: A total of 783 operational taxonomic units were shared by all breeds, whereas others were breed-specific. Firmicutes and Bacteroidetes dominated the majority of the fecal microbiota; Clostridia, Bacilli, and Bacteroidia were the major classes. Nine predominant genera were observed in all breeds and eight of them can produce short-chain fatty acids. Some bacteria can secrete cellulase to aid fiber digestion by the host. Butyric, isobutyric, valeric, and isovaleric acid levels were highest in Landrace pigs, whereas acetic and propionic acid were highest in the Hampshire breed. Heatmap was used to revealed breed-specific bacteria. Principal coordinate analysis of fecal bacteria revealed that the Landrace and Yorkshire breeds had high similarity and were clearly separated from the Duroc and Hampshire breeds. Conclusion: Overall, this study is the first time to compare the fecal microbiomes of four breeds of boar pig by high-throughput sequencing and to use Spearman's rank correlation to analyze competition and cooperation among the core bacteria.

• 한국식품과학회지
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• 제39권2호
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• pp.114-121
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• 2007

서울지역에 유통되고 있는 국내산 및 수입산 건조농산물 58건을 대상으로 다성분 동시분석방법에 따라 GC-NPD, $GC-{\mu}ECD$, HPLC-UV와 HPLC-FLD로 분석가능한 총 253종의 농약잔류량을 분석한 후 GC-MSD로 확인한 결과 총 14건의 건조농산물에서 잔류농약이 검출되어 24.1%의 검출률을 나타내었고, 이 중 건조 채소류의 검출률은 25.5%였다. 품목별 잔류농약의 검출률은 건조과채류, 건조엽채류, 건조엽경채류 순으로 높았으며, 특히 건조 과채류 중 건조고추의 잔류농약 분포가 다양하고 검출빈도가 상당히 높았다. 건조 농산물의 기준에 없는 12종의 잔류농약이 검출되었으며, 합성피레스로이드계, 유기염소계, 유기인계 순으로 검출빈도가 높았고, 특히 합성피레스로이드계 중 cypermethrin의 검출 횟수가 가장 많았다. 또한 대상목적에 따라 분류하면, 살충제, 살균제, 제초제, 살선충제 순서로 검출건수가 많았다. 산지별로 보면, 국내산, 중국산 ,북한산, 미국산, 베트남산의 순서로 잔류농약의 검출건수가 많았으며, 국내산은 과채류에서 수입산은 엽경채류에서 잔류농약의 검출빈도가 높았다.

• 농업과학연구
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• 제39권2호
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• pp.307-313
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• 2012

The purpose of this study is to provide basic information on exporter's coordination methods from the attitude of agro-food exporters. The implications are; Firstly, most of exporters believe that the agro-food export raises farmer's competitiveness rather than it does the farmhouse's income increase. Secondly, The stabilization of the farm-gain income by exporting agricultural products are most important in order to reinforce the cohesion between farmers and exporters. Thirdly, the exporters intend to participate in establishing and operating a large-scale producers' organization and marketing company under export polices. So, it is necessary that the government drive to coordinate the exporters and producers.

• 농약과학회지
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• 제15권2호
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• pp.114-124
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• 2011

본 연구는 2007년부터 2009년까지 서울지역에서 유통 중인 채소류 91종 18,069건에 대해 GC와 HPLC 및 GC-MSD를 이용한 다성분 동시분석법으로 잔류 농약을 분석하여 농약의 잔류실태를 파악하였다. 채소류 중 잔류농약 검출비율은 2007년 11.2%, 2008년 8.5%, 2009년 12.0%로 나타났으며, 잔류허용기준초과비율은 2007년 4.6%, 2008년 2.8%, 2009년 2.1%로 감소하는 경향을 나타내었다. 농약 잔류허용기준을 초과한 농약성분은 각각 2007년 43종, 2008년 30종, 2009년 36종이었으며, 이 중 2007년에는 azoxystrobin이 71회, 2008년에는 procymidone이 29회, 2009년에는 endosulfan이 24회로 가장 많았다. 3년 동안 연도별로 10건 이상 분석한 채소류의 시료수 대비 농약 잔류허용기준 초과비율은 겨자채가 가장 높게 나타났다. 검출빈도가 높은 농약성분에 대해 연도별 농약 잔류량을 비교한 결과 diazinon, endosulfan, paclobutrazol, procymidone 검출량이 통계적으로 유의한 차이가 있는 것으로 나타났다.

• 한국경제지리학회지
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• 제20권2호
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• pp.121-136
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• 2017

본고에서는 2005년부터 2014년까지 47개국 57개 농식품 수출입 자료를 이용하여 글로벌 교역 네트워크의 측면에서 한국 농식품의 교역 구조를 파악하였다. 본 연구의 주요 분석 결과는 다음과 같다. 첫째, 상품별로 네트워크 구조의 차별성이 나타난다. 즉, 채소, 과실, 가공식품의 순으로 컴포넌트 수가 유의하게 큰 것으로 분석되었다. 둘째, 상품에 따라 커뮤니티 구조가 동태적으로 변화하는 과정이 차별적이다. 교역 네트워크 내에서 일부 상품의 커뮤니티 구조가 역동적으로 변화하는 반면에, 개방의 확대 추세에도 불구하고 구조 변화가 나타나지 않는 상품군이 상존한다. 셋째는 우리 농식품의 국제 경쟁력 강화 추세가 나타난다는 것이다. 57개 분석 대상 농식품의 상위 네트워크에서 한국의 외향 연결도수가 드러나는 상품은 총 26개 품목에 불과하다. 그럼에도 불구하고 일부 채소류와 가공식품 등에서 국제경쟁력의 확대 가능성이 있는 것으로 나타났다.