육제품에 첨가된 대두단백 정량을 위한 면역분석법 개발에 관한 연구: 대두단백 정량을 위한 항체생산 및 특성조사

Development of Immunoassay Systems for the Assay of Soy Protein in Meat Products; Antibody Production and Properties for the Assay of Soy Protein

  • Kim, Cheon-Jei (Department of Animal Products Science, Kon-Kuk University) ;
  • Kim, Jong-Bae (Department of Animal Products Science, Kon-Kuk University) ;
  • Kim, Byung-Cheol (Department of Agriculture Science, Korea University) ;
  • Lee, Seoung-Bae (Department of Dairly Science, Sang Ji University) ;
  • Jung, Sung-Won (Department of Animal Products Science, Kon-Kuk University) ;
  • Shin, Hyun-Kil (Department of Animal Products Science, Kon-Kuk University) ;
  • Ko, Won-Sick (Department of Animal Products Science, Kon-Kuk University)
  • 발행 : 1992.06.01

초록

본 실험은 가공한 육제품에 첨가된 대두단백질(soy protein)을 정량하기 위한 면역분석(Immunoassay)법의 개발을 목적으로 실시하였다. Isolated soy protein(ISP)의 whole buffer extract(WBE) 분획을 SDS 처리 후 토끼에 주사하여 생산된 항혈청의 항체역가를 indirect ELISA법으로 조사하였을 시 1 : 10,000 이상에서도 반응을 나타내었다. 시료의 처리시 SDS의 최종농도가 0.03% 이상에서는 항원-항체 반응이 심각하게 저지되었으나, 0.02% 이하에서는 거의 영향을 미치지 않았다. 본 실험에 사용한 항체는 SDS로 변성된 항원(대두단백질)은 물론 SDS를 투석으로 제거한 재생항원(renatured antigen)과도 반응하였으나 그 정도는 변성항원에 비하여 약간 낮았다. 검정곡선(calibration curve)을 indirect competitive ELISA 법으로 작성하였을 시 ISP를 100 ng/100 ml까지 측정할 수 있는 감도(sensitivity)를 얻었다.

This study was carried out to develop a practical enzyme-linked immunosorbent assay(ELISA) for the determination of soy protein in processed meat products as a preliminary study. The titer of antiserum raised in rabbit by injection of SDS-treated whole buffer extract(WBE) from isolates soy protein(ISP) was above 1:10,000 in indirect ELISA. When the SDS concentration was higher than 0.03% the antibody-antigen reaction was inhibited significantly. However, the antibody-antigen reaction inhibition was not observed when the SDS concentration was less than 0.02%. The antibodies used in this experiment also reacted with renatured antigen after removing SDS by dialysis, though not better than with SDS-denatured antigen(immunogen). The calibration curve with $100\;{\mu}g/100\;ml$ of sensitivity was obtained in indirect competitive ELISA.

키워드