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대두 및 벼 현탁배양중 (懸濁培養) PCP 수용성대사물의 동정 - 1. PCP glucose conjugates 의 형성 -
김필제,박창규 ( Pil Je Kim,Chang Kyu Park ) 한국환경농학회 1992 한국환경농학회지 Vol.11 No.3
A metabolic study has been conducted to investigate the conversion of pentachlorophenol(PCP) to water soluble metabolites in soybean and rice cell suspension cultures as well as in intact rice plants. PCP in plant cells was found to be exclusively transformed into water soluble metabolites. The relative rate of the metabolic conversion of PCP in decreasing order was soybean cultures > rice cultures > rice plants. Also observed was that, the older the cultures grown, the lower the conversion rate was. Primary water soluble metabolites isolated from both the 5 day old soybean and 8 day old rice cells were specifically hydrolyzed only by β-glucosidic linkage specific glucosidase, suggesting that the metabolites are β-glucose conjugates. The amount of glucose conjugates was increased with increasing time of incubation of PCP up to 24 hr in both soybean and rice cultures; Thereafter, it was decreased progressively. Most of the glucose conjugates were further metabolized to more polar conjugates in cells, but a portion of them was excreted into the culture medium.
콩과 벼 현탁재배시 (懸濁培養時) PCP 수용성대사물의 동정 - 2. PCP glucose conjugates 의 분리 및 분석 -
김필제,박창규 ( Pil Je Kim,Chang Kyu Park ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.1
Abstracts From the previous metabolic study of Pentachlorophenol(PCP), PCP was found to be exclusively transformed into β-glucose conjugates of PCP in soybean and rice cell suspension cultures. In order to gather structural information of of the glucose conjugate, their aglycons and glycon have been analyzed by GC and GC/MS respectively, after thorough purification by chromatographic techniques. The glucose conjugates were effectively purified through a 1-butanol extraction followed by Silica gel TLC, Sephadex column chromatography and HPLC. Aglycons of the metabolites were identified as PCP, isomeric mixture of tetrachlorophenol, and tetrachlorocatechol and glycon were identified as glucose, suggesting that there are at least three kinds of glucose conjugates with different phenolic moieties. Under controlled conditions, the glucose conjugates were separated into three HPLC peaks, which released respective aglycon upon a hydrolytic treatment. These results give valuable information on the structure of the glucose conjugates such that some PCP-driven chlorophenols, in addition to PCP, are also conjugated with glucose.
POLICY & ISSUES 기획특집_2 - 일상생활 유해화학물질로부터 가족건강 지키기
김필제,Kim, Pil-Je 환경보전협회 2012 환경정보 Vol.397 No.-
화학물질에 대한 글은 늘 어렵고, 딱딱하다고 하여 고민을 하다가 쉽게 다가갈 수 있는 주제와 내용이 어떤 것이 있을까 생각해 보았다. 우리나라는 세계 7위의 화학산업 선진국이고, 4.3만종의 화학물질이 매년 수억 톤이 사용된다는 현황설명과, 어떤 물질은 인체 어디에 졸지 않으니, 그래서 저감해야 한다는 다소 정형화된 말은 피하고 싶어서다. 오늘 주제는 집, 사무실, 자동차나 지하철에서 화학물질과 만날 수 밖에 없는 일상 생활공간에서 '어떻게 해야 우리가족과 나의 건강을 더 잘 보호할 수 있을까'하는 유해물질을 피할 수 있는 방법에 대한 생각이다.
콩과 벼 현탁재배중 (懸濁培養) PCP 수용성대사물의 동정 - 3. PCP glucose conjugates 의 동정 -
김필제,박창규 ( Pil Je Kim,Chang Kyu Park ) 한국환경농학회 1996 한국환경농학회지 Vol.15 No.2
In order to identify PCP glucose conjugates transformed from PCP in soybean and rice cell suspension cultures, the purified metabolites were acetylated, purified twice by HPLC using a normal and a reversed phase column, and then subjected to fast atom bombardment(FAB) mass spectrometric analysis. As were the conjugates, their acetylated derivatives of the glucose conjugates formed at the early stage(48 hr) of metabolism were separated by HPLC into three fractions. FABMS analysis of each fraction revealed that, at least in two fractions, the locations of the spectral peaks were practically coincident with those deducible from the structures of pentachlorophenyl and tetrachlorophenyl β-D-glucopyranosides. Based on information obtained from mass spectral and chromatographic analysis of not only the water-soluble metabolites but also aglycones and glycone, it is concluded that PCP is primarily metabolized to glucose conjugates, which account for more than 50% recovery of the PCP-conveyed radioactivity from the water soluble metabolites : The conjugates are mainly made up of pentachlorophenyl β-D-glucopyranoside, tetrachlorophenyl β-D-glucopyranosides(probably 2 or more isomers), and 2-hydroxy-3,4,5,6-tetrachlorophenyl β-D-glucopyranoside.