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노지재배 복숭아 중 Bistrifluron과 Cyenopyrafen의 생산단계 잔류특성에 따른 감소추이
황은진 ( Eun-jin Hwang ),박정은 ( Jung-eun Park ),권찬혁 ( Chan-hyeok Kwon ),김진숙 ( Jin-sook Kim ),장희라 ( Hee-ra Chang ) 한국환경농학회 2018 한국환경농학회지 Vol.37 No.1
BACKGROUND: This study was performed to calculate the biological half-lives and regression coefficient of bistrifluron and cyenopyrafen dissipation in peach and to estimate the Pre-Harvest Residue Limits (PHRLs). METHODS AND RESULTS: The bistrifluron and cyenopyrafen were prepared on the basis of good agricultural practice for peach and treated with a single application. Peaches were harvested at 0, 1, 3, 5, 7, 10 and 14 days after application, prepared for analysis, and analyzed by HPLC-DAD. The limits of quantitation (LOQ) of bistifluron and cyenopyrafen were 0.02 mg/kg and 0.04 mg/kg, respectively. The recoveries of bistrifluron and cyenopyrafen were 99.5~ 108.7% and 88.4~98.9% at two different concentration levels. The biological half-lives of field I (Sejong) and field II (Pyeongtaek) were 6.1 and 7.0 days for bistifluron, and 6.3 and 7.0 days for cyenopyrafen, respectively. The 95% confidence intervals of dissipation rate constants of bistrifluron in peach were 0.0805∼0.1457 and 0.0577∼ 0.1417 for field I and field II, respectively, and those of cyenopyrafen were 0.0911∼0.1278 and 0.0576∼0.1417, respectively. CONCLUSION: Residue dissipation of bistrifluron and cyenopyrafen in peach were similar to that of correction to sample weight difference during the harvest periods. This study suggests that residue dissipation rate would be helpful to set the PHRLs that protect public health.
04 포스터 발표 : 환경 화학 분야(PC) ; PC-18 : 생산단계 홍고추 중 Cyenopyrafen, Pyriofenone의 경시적 잔류특성 연구
박정은 ( Jung Eun Park ),이영미,김나윤 ( Na Yoon Kim ),권찬혁 ( Chan Hyeok Kwon ),손영욱 ( Young Wook Son ),장희라 ( Hee Ra Chang ) 한국환경농학회 2015 한국환경농학회 학술대회집 Vol.2015 No.-
Cyenopyrafen은 피라졸계 살응애제로 전자전달방해(METI)를 통하여 방제효과를 나타내며 천적에 대한 안전성이 비교적 높아 IPM 방제에 적합하다. Pyriofenone은 벤조일피리딘계 항진균제로식물 병원성 곰팡이의 부착기 형성과 식물세포에서 균사 침투를 억제하여 방제효과를 나타낸다.Cyenopyrafen 및 Pyriofenone은 신규계통의 약제로 기존 약제에 저항성이 생긴 병해에도 높은 효과를 나타내며 효과발현 속도가 빠르고 약효가 고르게 발현되어 농가에서 많이 사용되고 있다. 본연구는 홍고추 재배시 주로 발생하는 차먼지응애 및 흰가루병 방제에 사용되는 Cyenopyrafen 및Pyriofenone 액상수화제에 대한 잔류 분석법을 확립하고, 약제 처리에 따른 경시적 잔류특성을 규명하여 회귀분석을 통한 생산단계 잔류허용기준을 설정하기 위하여 수행되었다. 약제처리는 수확10일전에 1회 2000배 희석하여 충전식 자동 분무기로 살포하였으며, 시료채취는 0, 1, 2, 3, 5, 7,10일로 7회 채취하였다. 시료는 HPLC/DAD를 이용하여 정량분석을 수행하였으며, 분석법 정량한계는 Cyenopyrafen과 Pyriofenone 두 약제 모두 0.02 mg kg-1수준이었으며, 회수율은 2농도 수준에서 3반복으로 실시하여 각각 79.2∼92.7% 및 88.7∼94.3%였다. Cyenopyrafen의 포장 1과 2의 0일차 잔류량은 각각 0.502 및 0.485 mg kg-1이었고, 10일차에는 각각 0.048 및 0.048 mg kg-1 로 포장 1과 2의 반감기는 각각 2.9일 및 3.0일 이었으며, Pyriofenone은 포장 1과 2의 0일차에서 각각 0.317 및 0.398 mg kg-1이었고, 10일차에는 각각 0.084 및 0.045 mg kg-1로 포장 1과 2의 반감기는 각각 5.4일 및 3.4일이었다. 잔류량의 감소추이로부터 산출된 회귀계수의 최소값을 적용하여 산출된 생산단계 농약잔류허용기준은 Cyenopyrafen은 포장 1, 2에 대하여 각각 출하일 10일전21.40 및 19.92 mg kg-1, Pyriofenone은 각각 4.77 및 8.83 mg kg-1로 제안하였다.
수출딸기 중 Cyenopyrafen과 Cyflumetofen의 잔류소실 특성평가 및 잔류농약 모니터링
김영진,김종환,권영상,송종욱,서종수 한국환경농학회 2017 한국환경농학회지 Vol.36 No.4
BACKGROUND: Many farmers who cultivate the strawberries for export have used agricultural chemicals which MRL (Maximum Residue Limits) of main export target countries or simultaneous multi-residue analysis in Korea have not been established. Among them, the cyenopyrafen and cyflumetofen were selected and applied to this study to determine the PHI (pre-harvest interval) which is appropriate to the PLS (Positive List System) criterion (0.01 mg/kg) and to investigate the residual amounts in the samples. In addition, Fifty pesticides were monitored to check upwhether it is suitable or not formain export target countries. METHODSANDRESULTS:Cyenopyrafenand cyflumetofen were spayed out to the strawberries. Samples for residual analyseswere taken formaximum60 days.After sampling, they were extracted by the QuEChERS method and analyzed using the LC-MS/MS. Cyenopyrafen and cyflumetofen were detected in a range of 0.0106 ~2.6517 mg/kg and of 0.0005~1.4480 mg/kg, respectively. From this results, they were found to be suitable for PLS concentration after 30 or 45 days after spray. In addition, they were detected in most samples that were selected at random. Their concentrations were higher than the PLS criterion in the maximum twenty samples. Twelve of pesticides unsuitable for main export target countries have been detected in the monitoring of simultaneous multi-residue analysis. The result indicates they are unsuitable for export since they excesses over PLS criterion. CONCLUSION: The monitoring result showed it is necessary to establish the pesticide standards of safe use suitable for the PLS criterion. In addition, it is considered continues management and inspection are needed to solve problems caused by unsuitable pesticides in export strawberries. 본 연구에서는 국내 320종 다성분 동시분석법에 적용되지있지 않으면서 실제 수출딸기의 농가에서 많이 사용하고 있는 cyenopyrafen과 cyflumetofen의 잔류농약 소실특성과실제 수출딸기의 잔류농도를 확인하기 위해 수행하였다. 각농약은 살포 후, 5일과 1일 이후에 국내 MRL 기준이하로 검출되었지만 cyenopyrafen는 30일, cyflumetofen는 45일이후부터 PLS 기준 이하로 검출되는 것으로 확인하였다. 따라서, 해당농약의 잔류허용기준이 설정되어있지 않은 국가에수출할 경우에는 살포 후 30일 또는 45일 경과 후에 수확하는 것이 바람직한 할 것으로 보인다. 또한, 2016년과 2017년에 총 40농가에의 수출딸기를 무작위로 채취하여 분석한 결과, cyenopyrafen은 21농가, cyflumetofen은 10농가에서주요 수출대상국의 PLS 기준을 초과하는 것으로 확인되었다. 수출딸기의 재배에 많이 사용되는 52종의 농약성분을2016년과 2017년에 총 40농가에서 시료를 채취하여 동시다성분 분석으로 모니터링 한 결과, 12종의 농약성분이 국내주요수출 국가인 홍콩과 싱가포르의 잔류허용기준에 부적합한것으로 확인하였다. 그러므로, 추후 수출딸기의 잔류농약에대한 안전성 및 신뢰성문제가 야기될 소지가 있기 때문에 각농가와 각 부처의 각별한 주의와 지속적인 지원 및 모니터링이 필요할 것으로 사료된다.
차응애 방제를 위한 Bifenazate와 Cyenopyrafen 액상수화제의 우엉의 잎과 뿌리 중 잔류변화 및 식이섭취 노출 안전성 평가
오경열,이득영,서성준,강상우,김진성,김영진,김진효 한국농약과학회 2023 농약과학회지 Vol.27 No.2
Bifenazate and cyenopyrafen are known as active ingredients for tea spider mites (Te t r a n y c h u s kanzawai) but are not registered for burdock. In this study, we investigated the time-course residue dissipation and the residue safety of bifenazate and cyenopyrafen on burdock roots and leaves through an open-field trial. The 23.5% bifenazate (SC) and 25% cyenopyrafen (SC) were applied twice at 7-day intervals with 2000-fold diluted solutions. The residues of bifenazate and cyenopyrafen in burdock roots were not detected (<0.01 mg kg-1). Otherwise, the initial residue of total bifenazate in the leaves was 17.5 ± 0.56 mg kg-1, and it decreased to 0.893 ± 0.216 mg kg-1 on 21 days after treatment (DAT). The initial residue of cyenopyrafen in the leaves was 16.0 ± 1.09 mg kg-1 and decreased to 0.426 ± 0.061 mg kg-1 on 21 DAT. The calculated DT50s of bifenazate and cyenopyrafen in the leaves were 5.9 and 3.8 days, respectively.
풋고추와 꽈리고추 중 cyenopyrafen, fludioxonil 및 fluopyram의 잔류특성
이주령(Juryeong Lee),김단비(Danbi Kim),최정윤(Jeong Yoon Choi),한해리(Haeri Han),권혜영(Hyeyoung Kwon),박성은(Sung Eun Park) 한국농약과학회 2024 농약과학회지 Vol.28 No.1
This study was conducted as an effort to examine the residual characteristics of green chilli pepper and twisted pepper, which differ in shape. Cyenopyrafen, fludioxonil, and fluopyram were used as test pesticides in the study. Spraying of cyenopyrafen and fludioxonil was performed twice at seven-day intervals and spraying of fluopyram was performed three times at seven-day intervals according to the pre-harvest interval (PHI). The samples were harvested at 0, 3, 5, 7, and 10 days after the last application of test pesticides. The residual amount showed a tendency to dissipate over time, which was verified using one-way ANOVA and Duncans multiple range test. The independent sample t-test was performed for comparison of residues between green chilli pepper and twisted pepper (p<0.05). The results for recovery of cyenopyrafen, fludioxonil, and fluopyram in green chilli pepper were 83.1-103.5%, 98.3-109.5%, and 87.8-101.8%, and those for recovery in twisted pepper were 69.0-108.6%, 107.7-115.3%, and 101.9-107.7%, respectively. The residual amounts of cyenopyrafen, fludioxonil, and fluopyram detected in green chilli pepper and twisted pepper showed a significant decrease over time (p<0.05) and were all below the maximum residue limit (MRL) of 3 mg/kg. A significant difference in the residues of cyenopyrafen and fludioxonil was observed between green chilli pepper and twisted pepper at three days after the last application, which is the expected harvest day according to the PHI, however, no significant difference was observed on most harvest days, and the residues detected on each harvest day were all below the MRL. Therefore, application of the PHI of cyenopyrafen, fludioxonil, and fluopyram for green chilli pepper to twisted pepper could be considered.
카빌,A. M. Abd El-Aty,김성우,Md. Musfiqur Rahman,정형석,이한솔,신호철,심재한 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.2
The dissipation pattern of a commercial cyenopyrafen formulation sprayed at the recommended dose on Asian pears (two different species) grown at two different sites was investigated using liquid chromatography–ultraviolet detection. Samples collected randomly over 14 days were extracted using acetone, partitioned using n-hexane/dichloromethane (8/2, v/v), and purified using a Florisil solidphase extraction cartridge. The residues in field-incurred samples were confirmed via liquid chromatography– tandem mass spectrometry. The method was validated in terms of excellent linearity in the solvent (R2=1); moreover, satisfactory recoveries (89.0–107.3%) were obtained at three fortification levels with a relative standard deviation (RSD)≤5.0% and the limits of detection and quantification of 0.0033 and 0.01 mg/kg, respectively. Although the residual levels at both sites were lower than the maximum residue limit (MRL=1 mg/kg), the dissipation at Site 2 was faster than that at Site 1. Consequently, the half-life (t1/2) in Site 2 (5.2 d) was shorter than that in Site 1 (9.8 d). Risk assessment at zero days showed acceptable daily intakes (%) of 27.25% and 24.52% at Sites 1 and 2, respectively, indicating that these fruit species are safe for consumption.