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뉴트라비딘 검출용 간이 진단키트의 성능향상을 위한 기본 플랫폼 선정
최선미(Sunmi Choi),김기영(Giyoung Kim),엄애선(Aeson Om),문지혜(Jihea Moon),박샛별(Saetbyeol Park),이상대(Sangdae Lee),김혁주(Hyuk Joo Kim) 충남대학교 농업과학연구소 2012 농업과학연구 Vol.39 No.4
This study was performed to optimize the basic platform of a lateral flow immunoassay. Improvement of the limit of detection (LOD) was evaluated according to the width of a nitrocellulose membrane with varying concentrations of analyte. The analyte, neutravidin was detected based on the avidin-biotin interaction. The antibody-Au nanoparticle conjugation was mostly stabled in a PBS buffer of pH 7.3. The optimal widths of a nitrocellulose membrane were 4 and 6 ㎜ considering the sample flow rate and signal strength of the test line on the membrane. The LOD of neutravidin was 0.001 ㎎/ml in the optimum conditions.
Fast Protein Liquid Chromatography를 이용한 황색포도상구균 장독소 B 분리
조아영 ( A Young Cho ),김기영 ( Giyoung Kim ),임종국 ( Jongguk Lim ),모창연 ( Changyeun Mo ),문지혜 ( Ji Hea Moon ),박샛별 ( Saetbyeol Park ),박수희 ( Su Hee Park ),엄애선 ( Aeson Om ) 한국산업식품공학회 2015 산업 식품공학 Vol.19 No.2
The aim of this study is to develop a method to separate and purify the Staphylococcal enterotoxin B (SEB). The method was based on fast protein liquid chromatography (FPLC) along with gel filtration (GF) after cation exchange chromatography (CIEX) treatment. Various columns such as CM sepharose HP, Cellufine C-500, WorkBeads 40S for CIEX, and GF on Sephacryl S-100 for GF were compared in terms of separation efficiency. Consequently, Work- Beads 40S along with Sephacryl S-100 produced best separation performance. Separated SEB with developed method was verified with ELISA assay. Purified SEB with the method can be used to manufacture rapid detection kit or antibodies.
스틸벤유도체의 생물활성도를 예측하기 위한 QSAR 분자표현자의 검색방법에 관한 연구
김재현,고동수,엄애선 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.3
The predictive screening of various molecular descriptors for predicting cyclooxygenase inhibitor, lipooxygenase inhibitor, leucotriene synthesis inhibitor, leucotriene antagonist activities of Stilbene moieties have been investigated for the application of quantitative structure-activity relationships (QSAR). The biological activities for 36 compounds were computed by the PASS program and molecular descriptors are cited from literatures or calculated, to investigate feasibility of screening relevant descriptors and of their applications among biological endpoints. Fairly good correlations varying from 0.7828 to 0.9032 were obtained using 12 descriptors with 29 Stilbene derivatives and 5 diazo-compounds. Our studies reveal that LogKow, electron density (X), electron density (Y), 4th-order valence connectivity and water solubility can be usefully employed to predict biological activities of stilbene derivatives with simple regression models.