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Anticariogenic Effects of Different Types of Tea

음용 차의 항우식 효과

  • Jeong, Ilyong (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Lee, Juyoung (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Miah (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Lee, Daewoo (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Yang, Yeonmi (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University) ;
  • Kim, Jaegon (Department of Pediatric Dentistry and Institute of Oral Bioscience, School of Dentistry, Chonbuk National University)
  • 정일용 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이주영 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 김미아 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 이대우 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 양연미 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소) ;
  • 김재곤 (전북대학교 치의학전문대학원 소아치과학교실 및 구강생체과학연구소)
  • Received : 2017.06.19
  • Accepted : 2017.07.14
  • Published : 2017.11.30

Abstract

The aim of this study was to investigate the effects of green tea, black tea, barley tea and roasted corn tea used in South Korea to make tea on the formation of Streptococcus mutans biofilm. The aqueous samples of 4 types of tea were extracted from commercial tea bags using cold water ($7^{\circ}C$) or hot water ($72^{\circ}C$). S. mutans UA 159 was introduced into 96-well plates which contained the tea samples and 1% sucrose media. Crystal violet staining was used to assess the effects of teas on S. mutans biofilm formation. In both groups of green tea and black tea, the biofilm significantly decreased with the solution of $50{\mu}L$ aqueous sample in $200{\mu}L$ media and $100{\mu}L$ aqueous sample in $100{\mu}L$ media (p < 0.05). S. mutans biofilm with $25{\mu}L$ of barley tea or roasted corn tea aqueous sample in hot water ($72^{\circ}C$) for 10 minutes showed significant decrease compared of green tea or black tea (p < 0.05). In this study, green tea and black tea suppress the formation of S. mutans biofilm.

이 연구의 목적은 한국인들이 일상적으로 마시는 서로 다른 네 종류의 차 티백을 이용하여 차가운 생수나 뜨거운 생수로 5분 또는 10분 동안 우려내는 일상적인 방법으로 차를 추출하였을 때 각각의 추출물이 Streptococcus mutans 세균막 성장에 미치는 효과를 알아보고자 하였다. 균주는 S. mutans UA 159를 이용하였고 1%의 sucrose와 각각의 차 추출물을 웰 플레이트에 넣고 배양하였다. 추출 온도에 따른 세균막 형성을 비교 했을 때 녹차와 홍차에서 추출 온도가 높을 때 세균막 형성이 적었고 통계적으로 유의하였다(p < 0.05). 추출 시간을 달리 하고 $72^{\circ}C$ 온수로 많은 양을 추출 했을 경우 세균막 형성을 비교 했을 때는 네 종류 차 모두 추출 시간에 대해서 통계적으로 유의하지 않았다. 한편 추출량에 따른 비교에서는 녹차와 홍차의 경우 같은 시간, 같은 온도로 추출하였을 때 추출량이 적다면 오히려 세균막 성장이 증가하였다.

Keywords

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