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해조류 중의 Anti - Tumor Initiator 및 Promoter의 해석 - 4 : 발암성 Heterocyclic Amine에 대한 곰피 추출물 중의 돌연변이원성 억제인자
박영범(Yeung-Beom Park),안종관(Jong-Khan Ahn),유승재(Sung-Jae Yoo),박덕천(Douck-Choun Park),김인수(In-Soo Kim),박영호(Yeung-Ho Park),김선봉(Seon-Bong Kim) 한국식품영양과학회 1998 한국식품영양과학회지 Vol.27 No.3
해조류 중의 돌연변이원성 억제인자를 해석하기 위하여 돌연변이원성 억제작용이 강한 곰피를 시료로 하여 식품의 가열조리시에 생성되는 발암성 heterocyclic amine인 PhIP 및 MeIQx에 대한 돌연변이원성 억제효과와 억제 인자를 살펴 보았다. 실험의 결과, 곰피로부터 추출한 알긴산의 돌연변이원성 억제효과는 미미하였으며, 그 가수분해물은 10㎎/plate의 농도에서 PhIP에 대하여는 41.0~51.6%, MeIQx에 대하여는 24.3~30.5%의 억제효과를 나타내었고, 가수분해시간에 따른 돌연변이원성 억제작용의 영향은 적었다. 곰피의 phenol추출물과 bromophenol은 0.5㎎/plate에서 PhIP 및 MeIQx에 대하여 90% 정도의 돌연변이원성 억제효과를 나타내었다. 그리고, 곰피 색소 중의 chlorophyll 및 그 유도체 중에서는 chlorophyllin이 억제작용이 높게 나타나 PhIP 및 MeIQx에 대하여 각각 90% 및 80% 이상의 억제효과를 나타내었다. 곰피의 carotenoid 성분중에서는 lutein 및 α-cryptoxanthin이 PhIP 및 MeIQx에 대해 약 90%/㎎의 억제효과를 나타내었다. The present study was performed to elucidate desmutagenic principles from Ecklonia stolonifera extracts against 2-amino-l-methyl-6-phenylimidazo[4,5-b]pyridine(PhIP) and 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline{MeIQx) with Salmonella/mammalian-microsome mutagenicity test. Alginate, phenols, chlorophyll and carotenoids from Ecklonia stolonifera were extracted and their desmutagenicities were assayed. Alginate hydrolysates showed desmutagenic activities against PhIP and MeIQx at high level dose. Phenol fractions and bromophenol showed desmutagenic activity of about 90% per 0.5㎎ against PhIP and MeIQx. Chlorophyllin among chlorophyll derivatives exhibited remarkable desmutagenic activities of 92.9% and 82.7% at 20μM against PhIP and MeIQx, respectively. Carotenoids, such as lutein and α-cryptoxanthin isolated from Ecklonia stolonifera exerted also high desmutagenic activity. Major desmutagenic substances from Ecklonia stolonifera are considered to be chlorophyllin, phenols, lutein, α-cryptoxanthin and low molecular alginates.
대청호와 금강유역 중 살충제, 과불화합물, 브롬화난연제의 모니터링
이혜리(Hyeri Lee),간종범(Jong Beom Khan),이보미(Bo-Mi Lee),김소희(Sohui Kim),이준배(Junbae Lee),천세억(Se Uk Cheon) 한국농약과학회 2017 농약과학회지 Vol.21 No.2
A multiresidue analytical method using LC-MS/MS was developed for insecticides perfluorinated compounds (PFCs), and brominated flame retardants (BFRs) in water samples with the simultaneous SPE method. The ranges of recoveries were 95.0~117.2% (Insecticides), 19.7~135.0% (PFCs), and 72.5~86.4%(BFRs) with coefficients of variation of less than 15%. Method detection limit (MDLs) of insecticides, PFCs, and BFRs were 3.0~3.7 ng/L, 0.3~7.1 ng/L, and 5.1~11.7 ng/L, respectively while limit of quantifications (LOQs) were 9.0~11.0 ng/L (insecticides), 0.9~21.4 ng/L (PFCs), and 15.4~35.0 ng/L (BFRs). For understanding the background levels of insecticides, PFCs, and BFRs in the river water, those compounds were monitored in Geum river main stream, So-ok stream, and Daechung Lake sites (Chu-dong, Mun-ui, and Dam) every month (March to December) utilizing the developed method. The compounds of the highest detection frequency were PFOA, PFHxA, PFHpA and dinotefuran (insecticide), whereas BFRs were detected only in March and December (So-ok and Dam). In conclusion, the trends were not observed on periodical and spatial characteristics and the background levels were secured for insecticides, PFCs, and BFRs in Geum river basin.
대청호에서 Geosmin, 2-MIB의 시간적·공간적 분포 특성
김교영 ( Kyo Young Kim ),간종범 ( Jong Beom Khan ),최인찬 ( In Chan Choi ),홍선화 ( Seoun Hwa Hong ),이준배 ( Jun Bae Lee ),이수형 ( Soo Hyung Lee ),이재정 ( Jay Jung Lee ) 한국환경농학회 2015 한국환경농학회지 Vol.34 No.1
BACKGROUND: Contamination of source water by odorous compounds are one of the problems related to the water quality management, especially in Korea where surface water is used as drinking water. Geosmin (1, 10-trans-dimethyl-trans-9-decalol) and 2-MIB (2-methyl isoborneol : 1,2,7,7-tetramethyl-exo-bicycloheptan-2-ol) are commonly recognized earthy-musty odor compounds produced by algae causing serious problems to the drinking water purification facilities. METHODS AND RESULTS: In this study, spatial and temporal distribution of the odor compounds, geosmin and 2-MIB were investigated along with the development of phytoplankton in the Daechung reservoir from July 2012 to October 2013. CONCLUSION: Concentrations and frequencys of detection of both compounds increased from April to October which were related to cyanobacterial bloom periods. However, concentrations of odor compounds were not related to the number of cyanobacteria. Concentrations of both cyanobacteria and geosmin showed similar trends with depth. Pearson correlation analyses showed that geosmin concentration exhibited significant correlation with the count of Anabaena macrospora and Aphanizomenon flos-aquae. On the other hand, 2-MIB concentration showed a significant correlation with the count of Anabaena smithii.