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Changes in Antigenicity of Gliadin from Medium Flour by Autoclave and Microwave Treatments

가압가열 및 Microwave 처리에 의한 중력분 Gliadin의 항원성 변화

  • Kwak, Ji-Hee (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Kim, Koth-Bong-Woo-Ri (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Lee, Chung-Jo (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Kim, Min-Ji (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Kim, Dong-Hyun (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • SunWoo, Chan (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Jung, Seul-A (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Kang, Ju-Youn (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Kim, Hyun-Jee (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University) ;
  • Choi, Jung-Su (Subdivision of Food Science, Kyungnam College of Information and Technology) ;
  • Kim, Seong-Won (Dept. of Pediatrics, Busan ST. Mary's Medical Center) ;
  • Ahn, Dong-Hyun (Dept. of Food Science & Technology/Institute of Food Science, Pukyong National University)
  • 곽지희 (부경대학교 식품공학과/식품연구소) ;
  • 김꽃봉우리 (부경대학교 식품공학과/식품연구소) ;
  • 이청조 (부경대학교 식품공학과/식품연구소) ;
  • 김민지 (부경대학교 식품공학과/식품연구소) ;
  • 김동현 (부경대학교 식품공학과/식품연구소) ;
  • 선우찬 (부경대학교 식품공학과/식품연구소) ;
  • 정슬아 (부경대학교 식품공학과/식품연구소) ;
  • 강주연 (부경대학교 식품공학과/식품연구소) ;
  • 김현지 (부경대학교 식품공학과/식품연구소) ;
  • 최정수 (경남정보대학 제과제빵조리) ;
  • 김성원 (부산 성모병원 소아청소년과) ;
  • 안동현 (부경대학교 식품공학과/식품연구소)
  • Received : 2011.05.13
  • Accepted : 2011.09.08
  • Published : 2011.10.31

Abstract

This study was conducted to evaluate the effect of physical treatments on the antigenicity of gliadin in medium wheat flour. The wheat flour was treated with an autoclave (5, 10, 30, 50 min), a microwave (1, 5, 10 min), and both (10, 30, 50 min/ 5, 10 min), and investigated by SDS-PAGE, immunoblotting and Ci-ELISA using anti-gliadin IgG. The results showed that the binding ability of anti-gliadin IgG to gliadin in wheat flour was slightly decreased when autoclaved or when autoclaved and microwaved. Especially, it was reduced to about 69% after autoclaving for 50 min and 73% after autoclaving for 50 min and microwaving for 5 min. In addition, gliadin bands in the 50 min autoclaved group disappeared in both SDS-PAGE and immunoblotting. On the other hand, the antigenicity of gliadin was unaffected by microwaving alone. Consequently, there were no considerable changes in using an autoclave alone or in combination with a microwave. These results suggest that autoclaving may affect the reduction of the antigenicity of gliadin in medium wheat flour.

본 연구에서는 가압가열 및 microwave 처리가 gliadin의 항원성에 미치는 영향을 살펴보기 위해 중력분에 가압가열과 microwave를 단독 또는 병행으로 처리하여 Ci-ELISA, SDS-PAGE 및 immunoblotting을 실시하였다. 가압가열 처리의 경우, 처리 시간이 길어질수록 IgG와의 결합력이 감소하였으며, 특히 50분 처리구에서 약 69%로 가장 낮은 결합력을 보였다. 또한 SDS-PAGE와 immunoblotting 결과에서도 무처리구에서 강하게 보였던 gliadin band가 처리에 의해 거의 소실되고 항체와 반응하지 않았다. 가압가열 및 microwave를 병행 처리한 경우도 마찬가지로 gliadin의 결합력이 다소 감소하였으며, 처리구 중에서는 가압가열 50분, microwave 5분 처리구에서 약 73%로 가장 낮은 결합력을 보였다. 반면 microwave를 단독으로 처리하였을 때에는 일부 단백질의 변화는 관찰되었으나 항원성 감소에는 큰 영향을 미치지 않았다. 이상의 결과를 통해 가압가열을 단독 처리에 의해 gliadin의 항원성이 다소 감소되었으며, microwave 병행처리에 의한 차이는 크게 나타나지 않은 것을 확인하였다.

Keywords

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