The Effects of Exopolysaccharide Produced by Streptococcus thermophilus BODY1 on Infection of Rotavirus in MA-104 Cell

Streptococcus thermophilus BODY1이 생성하는 Exopolysaccharide가 Rotavirus의 MA-104 세포감염에 미치는 영향

  • Song, Jin-Ook (Department of Science & Technology Education, Cyber Graduate School, Joongbu University) ;
  • Kim, Yong-Hui (Department of Hotel & Foodservice Industry, Joongbu University)
  • 송진우 (중부대학교 원격대학원 과학실업교육학과) ;
  • 김용휘 (중부대학교 호텔외식산업학과)
  • Published : 2006.12.31

Abstract

This study was conducted to evaluate the inhibitory effects of exopolysaccharide(EPS) produced by Streptococcus thermophilus BODY1 on rotavirus(RV). EPS was isolated from a commercial lactic acid bacteria, Str. thermophilus BODY1. The results obtained were as follows : At 0.1% of EPS, inhibitory effects of EPS on the MA-104 cell using MTT assay were, $Wa\;51.58{\pm}8.08%,\;KU \;63.09{\pm}7.58%,\;S2\;51.23{\pm}5.43%,\;YO\; 51.45{\pm}5.67%,\;K-21\;52.84{\pm}5.49%,\;NCDV\;57.50{\pm}10.85%,\;UK\;51.64{\pm}4.74%,\;KK3\;54.53{\pm}8.44%,\;JBR\;58.67{\pm}7.51%,\;S97\;50.63{\pm}5.17%,\;OSU\;55.48{\pm}5.75%,\;and\;RRV\;54.36{\pm}8.72%$, respectively. At 0.1/128%, the effects were $Wa\;5.5{\pm}6.45%,\;KU\;10.33{\pm}8.39%,\;S2\;0.98{\pm}8.39%,\;YO\;4.25{\pm}2.86%,\;K-21\;4.25{\pm}6.60%,\;NCDV\;4.01{\pm}4.12%,\;UK\;6.55{\pm}7.09%,\;KK3\;5.19{\pm}4.86%,\;JBR\;11.11{\pm}8.11%,\;S97\;6.75{\pm}6.95%,\;OSU\;10.14{\pm}8.54%,\;and\;RRV\;3.66{\pm}8.57%$, respectively. These results indicate that EPS have inhibitory effects on various serotype and sources of RV from different animals.

본 연구는 유산균에 의해 생성된 EPS의 병원성 식중독균에 대한 항균 효과와 바이러스성 설사병의 주요 원인인 여러 가지 RV에 대한 억제 효과를 파악하기 위하여 수행하였다. 실험에 이용된 EPS는 식품 성분 중 발효유 제품에 직접 이용이 가능하도록 상용화된 Streptococcus thermophilus BODY1에서 분리하였다. 그 결과는 다음과 같다. 측정된 human RV 5종의 역가는 $1.8{\sim}3.2{\times}10^7PFU/mL$, bovine RV 5종의 역가는 $1.8{\sim}2.6{\times}10^7PFU/mL$, porcine RV의 역가는 $2.4{\times}10^7PFU/mL$이었으며, Simian RV의 역가는 $2.8{\times}10^7PFU/mL$로 나타나, 본 실험에 사용된 표준 RV는 EPS의 억제 능력을 측정하기 위한 기본적인 역가를 충분히 지니고 있는 것으로 나타났다. MTT assay에 의한 EPS의 12종 공시 RV의 억제 효과는 EPS의 농도가 가장 높은 농도인 0.1%일 때 Wa의 경우 $51.58{\pm}8.08%$, KU는 $63.09{\pm}7.58%$, S2는 $51.23{\pm}5.43%$, YO는 $51.45{\pm}5.67%$, K-21은 $52.84(\pm}5.49%$, NCDV는 $57.50{\pm}10.85%$, UK는 $51.64{\pm}4.74%$, KK3는 $54.53{\pm}8.44%$, JBR은 $58.67{\pm}7.51%$, S97은 $50.63{\pm}5.17%$, OSU는 $55.48{\pm}5.75%$, RRV는 $54.36{\pm}8.72%$의 억제율을 각각 나타내었으며, 가장 낮은 농도인 0.1/128%일 때 Wa의 경우 $5.5{\pm}6.45%$, KU는 $10.33{\pm}8.39%$, S2는 $0.98{\pm}8.39%$, YO는 $4.25{\pm}2.86%$, K-21은 $4.25{\pm}6.60%$, NCDV는 $4.01{\pm}4.12%$, UK는 $6.44{\pm}7.09%$, KK3는 $5.19{\pm}4.86%$, JBR은 $11.11{\pm}8.11%$, 597은 $6.75{\pm}6.95%$, OSU는 $10.14{\pm}8.54%$, RRV는 $3.66{\pm}8.57%$의 억제율을 각각 나타내었다. 이러한 결과로 보아 EPS는 다양한 혈청형과 유래 동물의 RV 모두에게 억제 효과가 있는 것으로 확인되었다.

Keywords

References

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