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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Antimutagenicity of Soybean Sprouts Cultured with Germanium

게르마늄 수용액으로 재배한 콩나물의 항돌연변이 효과

  • 김은정 (부산대학교 식품영양학과 및 김치연구소) ;
  • 이경임 (양산대학 호텔조리) ;
  • 박건영 (부산대학교 식품영양학과 및 김치연구소)
  • Published : 2004.07.01
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Abstract

This study was carried out to determine the antimutagenic effect of soybean sprouts cultured in water containing germanium by Ames test and SOS chromotest. Germanium significantly inhibited the mutagenicity induced by aflatoxin B$_1$ (AFB$_1$) in Salmonella typhimurium TA100 by Ames test, and 4-nitroquinoline-N-oxide (4-NQO) in SOS chromotest. Juice from germanium treated soybean sprouts (GTS) inhibited 57∼75% mutagenicity induced by AFB$_1$, N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and 4-NQO compared with 20∼48% inhibition rate of control soybean sprouts (germanium non-treated soybean sprouts, GNTS) in the Ames test. Also, methanol extracts from GTS inhibited 65% mutagenicity induced by AFB$_1$ in Salmonella typhimurium TA100, and 51% mutagenicity by 4-NQO in SOS chromotest. Therefore, it suggests that GTS has strong potential antimutagenic effect.

Ames test와 SOS chromotest를 이용하여 유기 게르마늄과 게르마늄을 첨가하여 재배한 콩나물의 항돌연변이 효과를 검토하였다. 균주 Salmonella typhimurium TA100에서 AFB$_1$에 의하여 유발된 돌연변이는 Ge-132와 게르마늄 가루에 의하여 농도 의존적으로 저해 효과가 높게 나타났으며, 특히 유기 게르마늄을 20 mg/plate 첨가하였을 때 대조군에 비하여 87%의 돌연변이 유발 억제율을 나타내었다. 똑같은 실험계에서 게르마늄을 첨가하여 재배한 콩나물의 즙액과 methanol 추출물은 수돗물로 재배한 콩나물에 비하여 돌연변이 유발억제 작용이 유의적으로 높게 나타났다. 또한 직접돌연변이원인 MNNG와 4-NQO에 의해 유발된 돌연변이는 일반콩나물의 즙액을 200 $\mu$L/plate 첨가하였을 때 각각 37∼39%, 38∼48%의 저해효과를 나타낸 반면 같은 농도에서 게르마늄 콩나물의 즙액은 61%와 75%의 억제율을 나타내어 게르마늄 첨가 콩나물은 간접 돌연변이원뿐만 아니라 직접 돌연변이원에 의해서 유발된 돌연변이도 억제함을 알 수 있었다. 한편 E. coli PQ37 균주를 사용한 SOS chromotest에서 유기 게르마늄은 사용된 농도의 증가에 따라 돌연변이 유발억제작용이 증가하였으며, 게르마늄 콩나물의 methanol 추출물은 일반 콩나물에 비하여 높은 돌연변이 유발 억제작용을 나타내었다. 따라서 Ames test와 SOS chromotest를 통하여 게르마늄을 첨가하여 재배한 콩나물은 수돗물로 재배한 콩나물에 비하여 항돌연변이 효과가 우수한 것을 알 수 있었다.

Keywords

References

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