Japanese Journal of Lactic Acid Bacteria
Online ISSN : 2186-5833
Print ISSN : 1343-327X
ISSN-L : 1343-327X
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Volume 19, Issue 3
Displaying 1-2 of 2 articles from this issue
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  • Taxonomy and atypical characteristics of the genus Lactobacillus
    Akihito Endo, Leon M.T. Dicks
    2008 Volume 19 Issue 3 Pages 152-159
    Published: 2008
    Released on J-STAGE: September 29, 2010
    DOIhttps://doi.org/10.4109/jslab.19.152
    JOURNAL FREE ACCESS
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    Lactobacilli are regarded as one of the most important organisms for food microbiology and for human health. The genus Lactobacillus consists of more than 100 species, and so the genus is phylogenetically and phenotypically diverse. A number of reviews addressed the phylogenetic relationships of species within the genus Lactobacillus and listed key characteristics for each species. However, in recent years, approximately 10 novel species have been described per annum in the genus Lactobacillus , and thus the updated phylogenetic tree is always valuable. In addition, some of lactobacilli have atypical characteristics. In this review, atypical characteristics of some species in the genus Lactobacillus are discussed. An updated phylogenetic tree, showing the relationships within Lactobacillus spp. is provided.
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  • Evidence suggesting that a soluble factor majorly contributes to the antimutagenic property of lactic acid bacteria against the heterocyclic amine, 2-amino-3,4-dimethyl-3H-imidazo[4,5-f]quinoline
    Masaharu Nakayama, Rumiko Maezawa, Nami Koshihara, Yasuteru Nakamura
    2008 Volume 19 Issue 3 Pages 160-164
    Published: 2008
    Released on J-STAGE: September 29, 2010
    DOIhttps://doi.org/10.4109/jslab.19.160
    JOURNAL FREE ACCESS
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    We investigated the antimutagenicity of lactic acid bacteria (LAB) against 2 heterocyclic amines (HCAs), 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole (Trp-P-1) and 2-amino-3,4-dimethyl-3H-imidazo[4,5-f]quinoline (MeIQ), by the Ames assay, using Salmonella typhimurium TA98. The bacterial suspensions were prepared by storing viable LAB cells in phosphate-buffered saline at 4°C for 1 year. Compared with the pellet fraction, the supernatant fraction obtained after centrifugation of these suspensions significantly inhibited MeIQ mutagenicity. Thus, LAB were indicated to either possess or produce antimutagenic substance(s) against HCAs.
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