중금속 흡착능 유산균 분리

• 영문명: Isolation of Heavy Metal Scavenging Lactic Acid Bacteria
• 발행기관: 한국유산균프로바이오틱스학회
• 저자명: 김자이(Ja-I Kim) 김선규(Seon-Gyu Kim) 문기성(Gi-Seong Moon)
• 간행물 정보: 『Current Topics in Lactic Acid Bacteria and Probiotics』Current Topics in Lactic Acid Bacteria and Probiotics 5권 1호, 27~32쪽, 전체 6쪽
• 주제분류: 농수해양 > 식품과학
• 파일형태: PDF
• 발행일자: 2019.06.30

영문 초록

Nowadays micro-dust is a serious problem in Korea. In particular micro-dust contains heavy metals such as Pb (lead) and Cd (cadmium) which negatively effect on human health. In this study, we intended to isolate lactic acid bacteria which can scavenge the heavy metals. Firstly we isolated two lactic acid bacteria which were resistant to Ag, Cu, and Zn (30-100 mM AgNO3, CuSO4, ZnSO4 in MRS broth). The two lactic acid bacteria CJNU 1877 and JG 15 were identified Lactobacillus paracasei and Enterococcus faecium, respectively. Subsequently the strains were inoculated in MRS broth and agar plate where 100 ppm of Pb(NO3)2 and CdSO4 were added, respectively. They did grow in the conditions and we found aggregations from 24 h cultures, indicating the strains can absorb the heavy metals, which was further proved by scanning electron microscopy (SEM) and Inductively Coupled Plasma-Optical Emission Spectrometer. Therefore the isolated lactic acid bacteria can be used as a probiotics harboring heavy metal scavenging activity.

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키워드

micro-dust heavy metal lead cadmium lactic acid bacteria