Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Screening of Antiviral Activity from Natural Plants against Feline Calicivirus

Feline calicivirus에서 항바이러스 활성을 가지는 천연식물자원 탐색

  • Kim, Kyoung-Lan (Department of Microbiology, Pukyong National University) ;
  • Kim, Young-Mog (Department of Food Science & Technology, Pukyong National University) ;
  • Lee, Eun-Woo (Department of Life Science and Biotechnology, Dongeui University) ;
  • Lee, Dae-Sung (Department of Microbiology, Pukyong National University) ;
  • Lee, Myung-Suk (Department of Microbiology, Pukyong National University)
  • Published : 2009.07.30
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Abstract

In an effort to discover an antiviral substance against noroviruse (NV), which causes gastroenteritis illness world-wide, several plants including spices and herbs were evaluated for their antiviral activities against feline calicivirus (FCV) as a surrogate for NV. Among them, methanolic extract of green tea (Camellia sinensis L.) exhibited significant antiviral activity against FCV. After treatment with green tea extract (3.13 mg/ml) for 1 hr, FCV was completely inactivated. The antiviral activity of green tea extract against FCV was also determined to be dose and time- dependent. The results obtained in this study suggested that green tea will be effective in the prevention of food-borne diseases caused by NV.

노로바이러스는 인간에게 급성위장염을 일으키는 식중독 바이러스로, 최근 전세계적으로 노로바이러스 식중독 사고가 증가하고 있다. 따라서 본 연구에서는 다양한 생리활성 작용이 있다고 알려진 향신료, 차(茶), 식물성 한약재등 11종의 천연물질을 대상으로 노로바이러스의 대체모델인 feline calicivirus (FCV 에 대한 항바이러스 활성을 조사하였다. 각 추출물에 대한 항바이러스 활성은 end point dilution assay 방법인 50% tissue culture infectious dose ($TCID_{50}$)으로 바이러스 감염가를 측정하였다. 녹차(Camellia sinensis L.) 추출물의 경우 3.13 mg/ml의 농도에서 1 시간만에 FCV가 완전히 불활성화 되었으며, 홍화씨 (Carthamus tinctorius L.) 추출물은 6.25 mg/ml의 농도에서 5시간 만에 바이러스가 불활성화 되어 녹차추출물이 FCV에 대한 항바이러스 활성이 가장 뛰어난 것으로 조사되었으며, 농도 및 반응시간에 유의적으로 항바이러스 활성을 나타내는 것으로 관찰되었다. 녹차 및 홍화씨 추출물 등과 같은 천연식물 자원을 이용하여 FCV에 대한 항바이러스 활성을 조사한 결과는 궁극적으로는 노로바이러스에 의한 식중독 저감을 위한 기초자료에 이용될 수 있을 것으로 기대된다.

Keywords

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