Identification and probiotic characteristics of Lactococcus strains from plant materials

Probiotics are viable microorganisms that exhibit beneficial effects on the health of the host when they are ingested. In Asian areas including Japan, various fermented vegetable foods are produced and actively consumed in our meals. In the present study, we isolated lactococci from plant materials...

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Bibliographic Details
Published in:JARQ. Japan agricultural research quarterly 2004/04/30, Vol.38(2), pp.111-117
Main Authors: Kimoto, H. (National Inst. of Livestock and Grassland Science, Tsukuba, Ibaraki (Japan)), Nomura, M, Kobayashi, M, Okamoto, T, Ohmomo, S
Format: Article
Language:English
Subjects:
BILE
bile tolerance
CHOLESTEROL
cholesterol removal
FERMENTATION
IDENTIFICATION
ISOLATION
lactic acid bacteria
LACTOCOCCUS
PLANT RESOURCES
PROBIOTICS
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Summary:Probiotics are viable microorganisms that exhibit beneficial effects on the health of the host when they are ingested. In Asian areas including Japan, various fermented vegetable foods are produced and actively consumed in our meals. In the present study, we isolated lactococci from plant materials (fermented vegetables, silage and plants) and investigated their probiotic activities, such as tolerance to bile and the ability to remove cholesterol. A total of 411 lactic acid bacteria strains were isolated from plant materials. Out of the strains, 27 strains were identified as Lactococcus lactis subsp. lactis by phenotypic tests and a PCR-based method. Among them, 12 strains were subjected to further study. All lactococci tested could grow in broth containing 0.3% bile, and removed cholesterol from media during growth. These results showed that the lactococcal strains isolated from plant materials had probiotic activities.
ISSN:0021-3551
2185-8896
DOI:10.6090/jarq.38.111