Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Antimutagenic and Antimicrobial Effect of Cucumber (Cucumis sativus) Extracts

오이 추출물의 항돌연변이 및 항미생물 효과

  • 정숙현 (동서대학교 식품생명공학전공) ;
  • 문숙희 (경남정보대학교 식품영양과)
  • Published : 2001.12.01
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Abstract

Antimutagenic and antimicrobial effects of cucumber extracts were investigated. Antimutagenic effects of cucumber extract against aflatoxin (AFB$_1$) as indirect mutagen and N-methyl-N'-nitro-N-nitrcsoguanidine (MNNG) as direct mutagen using the Ames assay system with Salmonella typhimurium TA100 were studied. 1.25~5.0% of methanol extract exhibited 11 ~ 17% of antimutagenity against AFB$_1$ and 46~85% of antimutagenity against MNNG. Among fractions of methanol extract, hexane fraction exhibited the highest antimutagenic effect against AFB$_1$ (89%) and butanol fraction exhibited the highest antimutagenic effect against MNNG (95%). Antimicrobial effects of cucumber extract were investigated on the eleven microorganisms. Methanol extract showed anitimicrobial effect on eight microorganisms. Among these tested microorganisms, Klebsiella pnemonia KCTC 2208, pseudomonas aeruginosa KCTC 2004 were the most sensitively inhibited with 13 mm clear zone on holo test. Hexane fraction showed anitimicrobial effect only on Vibrio parahaemolyticus KCTC 2471. Chloroform and ethyl acetate fractions showed a weak effect. V. parahaemolyticus showed the lowest minium inhibitory concentration (MIC) (500 ppm) among eleven tested microorganisms by methanol extract. Sterilization effect of 1% methanol extract on P. aeruginosa incubation is 10 times stronger than 0.5% methanol extract. It estimated to need 26 min for the sterilization of 90% P. aeruginosa cell counts by 1% methanol extract but 250 min by 0.5% methanol extract.

이 연구에서는 오이 methanol 추출물과 methanol 추출물의 분획물에 대한 항돌연변이 효과와 항미생물 효과를 조사하였다. Ames 실험계를 이용한 항돌연변이 효과는 Salmonella typhimurium TA100에서 간접 돌연변이원인 aflatoxin B$_1$에 대해 methanol 추출물은 1.25~5.0%에서 11~70%의 항돌연변이 활성을 나타냈었고, 직접 돌연변이원인 MNNG에 대해서는 46~85%의 항돌연변이 활성을 나타내었다. 또한 methanol 추출물을 분획하여 얻은 각 용매별 획분 중에서는 aflatoxin B$_1$에 대해서는 hexane 획분이, MNNG에 대해서는 butanol획분이 89% 및 95%로 가장 큰 항돌연변이 효과를 나타내었다. 항미생물 효과의 조사에서는 오이 metanol 추출물이 실험균주 11종 중 8종의 세균에 대하여 항균활성을 나타내었다. 이 중 K. pneumonia KCTC 2208, P. aeruginosa KCTC 2004가 clear zone 13 mm로서 가장 항균 활성에 민감한 균종으로 나타났다. 각 용매별 획분 중에서는 hexane 획분은 V. parahaemolyticus KCTC 2471에 대하여 항균효과를 보였고, chloroform과 ethyl acetate 획분에서도 약하게 항균 효과를 보였다 Methanol추출물의 농도에 따른 균증식억제 효과의 결과로는 V. parahaemolyticus가 가장 낮은 최소증식억제농도를 보여 500 ppm으로 나타났다. Methanol 추출물의 살균효과는 P. aeruginosa에서 1%의 농도가 0.5%의 농도에 비하여 약 10배정도의 빠른 살균효과를 보였다. 즉 초기 균수의 90%균을 살균하는데 1%와 0.5%의 농도에서 각각 26분, 250분이 소요되는 것으로 예측되었다.

Keywords

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