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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Repeated-Dose Toxicity Study of Pediococcus pentosaceus MD1, an Anti-Helicobacter pyroli Activity Lactic Acid Bacteria Isolated from Kimchi, in Rats

김치로부터 분리한 Helicobacter pyroli 억제능 유산균 Pediococcus pentosaceus MD1의 흰쥐에 대한 반복투여독성 연구

  • 이재준 (조선대학교 식품영양학과) ;
  • 이유미 (조선대학교 식품영양학과) ;
  • 장해춘 (조선대학교 식품영양학과) ;
  • 이명렬 (조선대학교 식품영양학과)
  • Published : 2007.08.30
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Abstract

The purpose of this study was to investigate repeated-dose toxicity in male and female rats orally administered with Pediococcus pentosaceus MD1, an anti-Helicobacter pyroli producing lactic acid bacteria isolated from kimchi. Sprague-Dawley rats were divided into 4 groups, 10 animals in each group. The test article was administered once daily by gavage to rats at dose levels of 0, 500, 1,000 and 2,000 mg/kg for 4 weeks. No test article-related deaths and clinical findings in both sexes of rats during the study period were resulted. In addition, no differences were found between control and treated groups in body weight changes, food intake consumption and water consumptions. Hematological parameters, serum biochemical analysis and any other findings did not also show any significant or dose-dependent alterations. There were no alterations in absolute and relative organ weights by the administration of Pediococcus pentosaceus MD1. These results suggest that no-observed-adverse-effect level (NOAEL) of Pediococcus pentosaceus MD1 is considered to be more than 2 g/kg in male and female rats.

본 연구는 H. pyroli 억제능을 지닌 김치 유래 유산균인 Pediococcus pentosaceus MD1을 가지고 궤양 예방효과를 지닌 김치를 개발하기 위한 선행연구로서 독성평가 실험을 수행하고자 4주 반복 투여 독성시험을 실시하였다. 본 시험에서 설정한 최고 용량 투여군인 2,000 mg/kg에서도 일반증상관찰, 체중변화, 사료섭취량 및 물 섭취량을 측정한 결과, 모두에서 시험물질과 관련된 유의성 있는 변화가 관찰되지 않았다. 또한 혈액학적, 혈액생화학적 검사 및 장기의 육안적 관찰 및 장기 중량변화에서도 대조군과 유의성이 있는 차이를 보이는 항목이 없었으며, 모두 정상범위를 벗어나지 않아 시험물질에 기인하는 이상소견을 발견할 수 없었으므로, 최대 무해 용량은 2,000 mg/kg 이상일 것으로 추정되었다. 이상의 결과 4주 반복 투여 독성시험 결과 H. pyroli 억제능을 지닌 유산균인 Pediococcus pentosaceus MD1은 저독성물질로 판정되었으며, 유산균이 기능성식품 소재로서의 안전성 확인을 통하여 소비자들에게 소화성 궤양 예방효과를 지닌 안전하고 차별화된 경쟁력 있는 김치를 개발할 수 있을 것으로 사료된다.

Keywords

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