Journal of Dairy Science and Biotechnology

Korean Society of Dairy Science and Biotechnology (한국낙농식품응용생물학회)
권호 표지

Antimicrobial Activity of Epigallocatechin Gallate (EGCG) extracted from Green Tea (Camellia sinensis) against Cronobacter spp. and Salmonella spp. in Various Dairy Products: A Preliminary Study

다양한 유제품에 이용될 수 있는 녹차(Camellia sinensis)에서 추출한 EGCG(Epigallocatechin gallate)의 Cronobacter spp.와 Salmonella spp.에 대한 항미생물 활성 효과에 관한 연구: 예비실험연구

  • Kim, Kwang-Yeop (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Kim, Young-Ji (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Chon, Jung-Whan (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Kim, Hyunsook (Dept. of Food & Nutrition, College of Human Ecology, Hanyang University) ;
  • Kim, Dong-Hyeon (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Lee, Soo-Kyung (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Kim, Hong-Seok (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Yim, Jin-Hyuk (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Song, Kwang-Young (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Kang, Il-Byung (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Jeong, Dana (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Park, Jin-Hyeong (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Jang, Ho-Seok (Center for One Health, College of Veterinary Medicine, Konkuk University) ;
  • Seo, Kun-Ho (Center for One Health, College of Veterinary Medicine, Konkuk University)
  • 김광엽 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 김영지 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 천정환 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 김현숙 (한양대학교 생활과학대학 식품영양학과) ;
  • 김동현 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 이수경 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 김홍석 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 임진혁 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 송광영 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 강일병 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 정다나 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 박진형 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 장호석 (건국대학교 수의과대학 식품안전건강연구소) ;
  • 서건호 (건국대학교 수의과대학 식품안전건강연구소)
  • Received : 2016.04.30
  • Accepted : 2016.06.01
  • Published : 2016.06.30
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Abstract

The main constituent of tea catechins, EGCG [(-)-Epigallocatechin-3-gallate], could inhibit the growth of various microorganisms and differently affect gram-positive and gram-negative bacteria. Antimicrobial activity of EGCG, a compound from green tea (Camellia sinensis) extract, against Cronobacter spp. and Salmonella spp. was studied to evaluate the possibility of using EGCG as a natural food additive in various dairy products. In pure TSB culture, the growth of Cronobacter spp. was suppressed below the detection limit (1 log CFU/mL) depending on EGCG concentration ($600{\sim}800{\mu}g/mL$), after 5~16 days at $4^{\circ}C$. Similarly, the growth of Salmonella spp. was suppressed below the detection limit (1 log CFU/mL) depending on EGCG concentration ($400{\sim}800{\mu}g/mL$), after 5~16 days at $4^{\circ}C$. Therefore, these results suggest that EGCG could be used as an effective additive to inhibit the growth of Cronobacter spp. and Salmonella spp. in various dairy products, such as yoghurt, cheese, dried infant powder, and so on.

Keywords

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