Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Lactic Acid Bacterias Growth, Antioxidant Activities and Antimicrobial Activity on Fish Pathogenic Bacteria by Native Plant Extracts, Jeju Island

제주도 자생식물 추출물의 유산균에 대한 생육과 항산화 활성 및 어류 병원성 미생물에 대한 항균활성

  • 문영건 (제주대학교 해양과학대학 해양과학부) ;
  • 최광식 (제주대학교 해양과학대학 해양과학부) ;
  • 이경준 (제주대학교 해양과학대학 해양과학부) ;
  • 김기영 (제주대학교 해양과학대학 해양과학부) ;
  • 허문수 (제주대학교 해양과학대학 해양과학부)
  • Published : 2007.09.28
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Abstract

In this study was investigated the growth effect of native plant (Microlepia marginata(panzer Christ., Prunella vulgaris. aleutica Fernald, Perillafrutescens var. japonica Hara., Gleichenia japonica Spreng) extracts on various lactic acid bacterias, electron donating ability, total cell count and hydroxyl radical scavenging activity. The total cell count of Enterococcus faecium KCCM 12118, Lactobacillus rhamnosus KCCM 32826, Lactobacillus plantarum KCCM 11542, Pediococcus pentosaceus KCCM 40464 in the absence of native plant extracts (10%) at $37^{\circ}C$ after 48hr were $2.2{\times}10^9\;cfu/ml$, $2.1{\times}10^9\;cfu/ml$, $2.3{\times}10^9\;cfu/ml$, $2.2{\times}10^9\;cfu/ml$. On the other hand, the total cell count of E. faecium KCCM 12118, L. rhamnosus KCCM 32826, L. plantarum KCCM 11542, P. pentosaceus KCCM 40464 in the presence of native plant extracts (10%) at $37^{\circ}C$ after 48hr were $4.3{\times}10^9\;cfu/ml$, $4.3{\times}10^9\;cfu/ml$, $4.8{\times}10^9\;cfu/ml$, $3.9{\times}10^9\;cfu/ml$. The electron donating ability indicated to E. faecium KCCM 12118, L. rhamnosus KCCM 32826, L. plantarum KCCM 11542, P. pentosaceus KCCM 40464 added by 10% native plant extracts, respectively. when 10% native plant extracts were added lactic acid bacterias, the electron donating ability is the highest. Hydroxyl radical scavenging activity of E. faecium KCCM 12118, L. rhamnosus KCCM 32826, L. plantarum KCCM 11542, P. pentosaceus KCCM 40464 showed higher than that of control.

본 연구는 제주도 자생식물 4종(Microlepia marginata panzer Christ., Prunella vulgaris. aleutica Fernald, Perilla-frutescens var. japonica Hara., Gleichenia japonica Spreng)을 부위별로 나누어 각 부위를 열수 추출하여 각 추출액을 농도별로 첨가하여 E. faecitum KCCM 12118, L. rhamnosus KCCM 32826, L. plantarum KCCM 11542, P. pentosaceus KCCM 40464 균종에 대한 생육조건 및 배양액을 가지고 어류 질병 미생물에 대한 항균활성 및 DPPH 라디칼 소거활성 및 Hydroxyl radical 소거활성을 조사하였다. 자생식물 추출액을 농도별로 첨가하여 4종의 lactic acid bacteria를 72시간 배양하면서 생육활성을 보았을 때 10%를 첨가하여 48시간 배양하였을 때가 가장 좋은 생육 조건임을 알 수가 있었으며, 또한 lactic acid bacteria 생육시 자생식물 추출물 첨가가 lactic acid bacteria 증식에 효과가 있음을 나타내었다. DPPH 라디칼 소거활성에서는 꿀풀 잎 추출물을 10% 첨가하여 배양하였을 때 합성 항산화제인 BHA(90%)와 BHT(81%) EDA를 비교하였을 때 BHA와 유사하거나 조금 높은 활성을 BHT보다는 높은 라디칼 소거활성을 나타내었다. Hydroxyl radical 소거활성은 5% 자생식물 추출물을 첨가한 배양액에서부터 BHT보다 높은 소거활성을 나타내기 시작하여 10%를 첨가한 배양액에서는 BHA보다 높은 소거 활성을 나타내었다.

Keywords

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