Abstract:
PURPOSE: A slide chip for a detection sensor for food-borne pathogens and a method for manufacturing the same are provided to quickly and accurately detect the food-borne pathogens. CONSTITUTION: A slide chip for a detection sensor for food-borne pathogens comprises: a substrate which is coated with a metal; a linker having a substituent which is able to bind to the metal and is positioned at 5' terminal of deoxythymidine(dT); and an RNA aptamer which is derived from food-borne pathogens and binds to the linker. The metal is silver or gold. The substituent is a thiol group(-SH). A method for manufacturing the slide chip comprises: a step of coating the substrate with silver and preparing a silver nanofilm; a step of binding the RNA aptamer and the linker and preparing an RNA aptamer-linker conjugate; and a step of binding the thiol group of the RNA aptamer-linker conjugate to the silver coated on the substrate, and fixing the RNA aptamer-linker conjugate on the silver nanofilm.
Abstract:
PURPOSE: A human anti-epithelial cell growth factor receptor Fab antibody and a detection method thereof are provided to detect metallothionine included in a sample up to the concentration of 0.1 nanogram/ml. CONSTITUTION: A detecting method of metallothionine included in a sample comprises the following steps: conflict reacting metallothionine fixed on the electrode surface of quartz crystal microbalance(QCM) chip with a sample for primary antibody; reacting the primary antibody combined with the fixed metallothionine with a secondary anti body in which horseradish peroxidase(HRP) is tagged; obtaining the frequency(F1) of vibration in a steady- state by adding a reactive buffer solution to the secondary antibody; obtaining the frequency(F2) of vibration in the steady- state by reacting 3,3'-diaminobenzidine(DAB) and H2O2 substrate solution with the secondary antibody in which the HRP is tagged; and measuring the vibration frequency variation(ΔF = F1-F2) from the frequency(F1) and the vibration frequency(F2).
Abstract:
A method of preparing an antigen-immobilized immuno-fluorescence slide, the method comprising: immobilizing a C-reactive protein on a slide to prepare a protein chip; mixing an antibody that specifically binds to a target protein, with streptavidin to label the antibody with a fluorescent nanoparticle; immuno-reacting the antibody by competitive mixing, assaying with a fluorescence camera, wherein the immobilizing of the C-reactive protein on the slide comprises: modifying the slide with 3-aminopropyltrimethoxysilane to prepare a modified slide; hydrating the slide modified with 3-aminopropyltrimethoxysilane; activating the modified slide by using a glutaraldehyde solution; dissolving a C-reactive protein at a concentration of 0.01-0.5 mg/ml in a 30-70 mM phosphate buffer solution (pH 6.5-7.8) to prepare an antigen solution for immobilization; placing a petri dish comprising the slide on a spotting guide and spotting 1-100 µ„“ of the antigen solution on spotting points; and performing a reaction on the slide prepared as described above for 1-6 hours to immobilize the antigen, and an immune-fluorescence slide prepared by using the method.
Abstract:
PURPOSE: A method for preparing metallothionein(MT) which is a biomarker for heavy metal pollution is provided to detect pollution of fishes. CONSTITUTION: A method for preparing metallothionein(MT) comprises: a step of injecting a heavy metal salt solution to fishes; a step of treating heating wound at the infection site and growing the fishes to induce high concentration of metallothionein into the blood; a step of collecting blood from the fishes and adding protease inhibitor to obtain serum; and a step of performing anion exchange chromatography. The heavy metal is cadmium chloride or copper sulfate.
Abstract:
본 발명은 기 출원 발명(대한민국 특허출원 제 2007-0141680호, 2007.12.31)에 기재된 C-반응성 단백(C-reactive protein) 측정용 수정진동자 면역센서 측정장치를 사용하나 상기 발명과는 다르게 금 나노입자(gold nanoparticle)에 의한 신호증폭 원리를 적용하여 바이오마커(biomarker)의 하나인 C-반응성 단백을 초고감도로 측정하는 방법에 관한 것이다. 금 나노입자, 신호증폭, C-반응성 단백, 수정진동자 면역센서, 초고감도 측정
Abstract:
본 발명은 바이오마커(biomarker)의 하나인 C-반응성 단백(C-reactive protein)을 측정할 수 있는 C-반응성 단백 측정용 수정진동자 면역센서 측정장치 및 수정진동자 면역센서를 이용한 C-반응성 단백의 고감도 측정방법에 관한 것이다. 바이오마커, C-반응성 단백, 수정진동자, 면역센서
Abstract:
본 발명은 표면 플라즈몬 공명을 이용하여 튀김유의 극성 분자 함량을 신속 측정하는 방법에 관한 것으로서, 측정 시료를 에탄올과 1:1로 혼합하고, 혼합 용액 중에서 에탄올 용해성 물질이 포함된 상등액을 분취하고, 분취된 용액을 대상으로 표면 플라즈몬 공명(SPR)을 이용하여 SPR 신호값을 획득하고, SPR 신호값을 극성분자의 함량으로 환산하는 환산식에 의해 튀김유에 함유되어 있는 극성 분자의 함량을 신속하게 측정함으로써 준실시간으로 튀김유의 극성분자함량을 정량 측정하는 장점을 갖는 것이다.