Binding of heterocyclic amines by lactic acid bacteria from miso, a fermented Japanese food

Canadian Journal of Microbiology
R Rajendran, Y Ohta

Abstract

Miso, a widely used Japanese fermented food was analysed for its lactic acid bacterial count on bromocresol purple agar. The binding of eight different foodborne carcinogenic heterocyclic amines to 25 bacterial isolates from miso were investigated. The heterocyclic amines used were 3-amino-1,4-dimethyl[5H]pyrido(4,3-b)indole (Trp-P-1), 3-amino-1-methyl[5H]pyrido(4,3-b)indole (Trp-P-2), 2-amino-6-methyldipyrido(1,2-a:3'2'-d)imidazole (Glu-P-1), 2-amino-1-methyl-6-phenylimidazo(4,5-b)pyridine (PhIP), 2-amino-dimethylimidazo(4,5f)quinoline (IQ), 2-amino-3,4-dimethylimidazo(4,5-f) quinoline (MeIQ), 2-amino-3,8-dimethylimidazo(4,5-f)quinoxaline (MeIQx), and 2-amino-3-methyl-9H-pyrido(2,3)indole (MeA alpha C). The lyophilized cells of all of the isolates exhibited high binding activity towards Trp-P-1, Trp-P-2, MeA alpha C, and PhIP, while Glu-P-1 and IQ were not effectively bound. Of the isolates tested, the strongest and weakest binders were identified as Pediococcus acidilactici 1 and 2, respectively. Lyophilized cell wall fractions, heat-treated cells, and the cytoplasmic contents of P. acidilactici 1 and 2 were analysed for their ability to bind to different mutagens. Pure cell wall and peptidoglycan showed greater binding activ...Continue Reading

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Citations

Sep 21, 2000·Chemico-biological Interactions·C HaskardJ Ahokas
Jun 27, 2001·Applied and Environmental Microbiology·C A HaskardJ T Ahokas
Jun 3, 2009·Journal of Applied Microbiology·A Hernandez-MendozaH S Garcia
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Aug 28, 2017·Brazilian Journal of Microbiology : [publication of the Brazilian Society for Microbiology]·Jean Claude AssafNicolas Louka
Nov 28, 2018·Journal of Applied Microbiology·M YousefiH Hosseini
Nov 6, 2009·Journal of Environmental Monitoring : JEM·Antonio J Signes-PastorAndrew A Meharg
Aug 6, 2013·Journal of Toxicologic Pathology·Hiromitsu Watanabe
May 25, 2021·Journal of Microbiology and Biotechnology·Omme Fatema SultanaHo-Yeon Song

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