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Potential probiotic properties of Lactococcus lactis NK34 isolated from jeotgal

Authors
Lee, Na-KyoungNoh, Ji EunChoi, Gui-HunPark, EunjuChang, Hyo-IhlYun, Cheol-WonKim, Seung-WookKang, Chang-WonYoon, Yoh-ChangPaik, Hyun-Dong
Issue Date
Oct-2007
Publisher
KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
Keywords
Lactococcus lactis; jeotgal; probiotics; cholesterol-lowering activity; immunolstimulating activity; DNA damage
Citation
FOOD SCIENCE AND BIOTECHNOLOGY, v.16, no.5, pp.843 - 847
Indexed
SCIE
SCOPUS
KCI
Journal Title
FOOD SCIENCE AND BIOTECHNOLOGY
Volume
16
Number
5
Start Page
843
End Page
847
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/125694
ISSN
1226-7708
Abstract
Strain NK34 was characterized for probiotic use. Strain NK34 was named Lactococcus lactis NK34 based on API 50 CHL kit results and 16S rDNA sequencing. L lactis NK34 was highly resistant to artificial gastric juice (pH 2.5) and artificial bile acid. Based on results from the API ZYM kit, 4 enzymes were produced. L. lactis NK34 was resistant to all antibiotics tested except for 10 mu g/mL roxithromycin and 10 mu g/mL erythromycin. The cholesterol-lowering effect of L lactis NK34 was about 46.9%. Concentrations of interleukin (IL)-1 alpha in the 20x concentrated supernatant of L. lactis NK34 was about 361 pg/mL. L lactis NK34 was also found to inhibit the growth of colon cancer cells due to MNNG-induced DNA damage. These results demonstrate the potential of L lactis NK34 as a health-promoting probiotic.
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