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string(1457) "In this study, the ability of a probioticstrain (BifidobacteriumadolescentisATCC 15703) to inhibit the growth of the common food contaminantBacilluscereusATCC 9634was studied, both individually and as part of a synbiotic with FOS during batch or continuous fermentation (flow fermentation). The conditions of the flow fermentation corresponded to the parameters of the human large intestine: maintaining a pH of 6.8; anaerobiosis; and a medium flow rate of 0.04 h−1. Bifidobacteria and bacilli were co-cultivated on a prebiotic carbohydrate substrate (10 g/L) and the prebiotic was replaced with glucose (10 g/L).The results of the batch and flow fermentation were compared.The synbiotic efficacy of the probioticBif. adolescentisand the prebiotic FOSagainst the common food contaminantBac. cereuswas shown for all conditions. Fermentation of a pure culture of bifidobacteria with varying prebiotic concentrations (2, 5, 10, 15 and 20 g/L) was carried out to study the state of dynamic balance. It was demonstrated that 48 hours is enough to achieve stable dynamic balance.Prebiotics were co-cultivated with varying carbohydrate concentrations of 5, 10, and 15 g/L.The results showed that increasing the prebiotic concentration increased the duration of the lag-phase and reduced the final number of bacilli.
Keywords: probiotics, prebiotics, synbiotics, gastrointestinal tract modeling, antagonism, co-culture fermentation
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[4] Geva-Zatorsky N, Sefik E, Kua L et al. Mining the human gut microbiota for immunomodulatory organisms. Cell. 2017;168(5):928-943.
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[7] Roe AJ, O’Byrne C, McLaggan D, Booth IR Inhibition of Escherichia coli growth by acetic acid: A problem with methionine biosynthesis and homocysteine toxicity. Microbiology. 2002;148(7):2215-2222.
[8] Cummings JH, Macfarlane GT. Gastrointestinal effects of prebiotics. British Journal of Nutrition. 2002;87(2):145-151.
[9] Lo TS, Borchardt SM. Antibiotic-associated diarrhea due to methicillinresistant Staphylococcus aureus. Diagnostic Microbiology and Infectious Disease. 2009;63(4):388-389.
[10] Dupont D, Alric M, Blanquet S et al.Can dynamic in vitro digestion systems mimic the physiological reality. Critical Reviews in Food Science and Nutrition. 2019; 59(10):1546-1562
[11] Montague G, Morris J. Neural-network contributions in biotechnology. Trends in Biotechnology. 1994;12(8):312-324.
[12] Organji, Sameer & Abulreesh, Hussein & Elbanna, Khaled & Osman, Gamal & Khider, Manal. Occurrence and characterization of toxigenic Bacillus cereus in food and infant feces. Asian Pacific Journal of Tropical Biomedicine. 2015;5(7):515-520.
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[14] Gibson GR, Cummings JH, Macfarlane GT.Use of a three-stage continuous culture system to study the effect of mucin on dissimilatory sulfate reduction and methanogenesis by mixed populations of human gut bacteria. Applied and Environmental Microbiology. 1988;54(11):2750-2755.
[15] Williams CF, Walton GE, Jiang L, Plummer S, Garaiova I, Gibson GR. Comparative analysis of intestinal tract models. Annual Review of Food Science and Technology. 2015;6:329-350.
[16] Scherer, Rodrigo & Rybka, Ana & Ballus, Cristiano & Meinhart, Adriana & Teixeira, Jose & Godoy, Helena. Validation of a HPLC method for simultaneous determination of main organic acids in fruits and juices. Food Chemistry. 2012;135(1):150-154.
[17] Ginjupalli, Kishore & Karthik, Armugam & Shavi, Gopal & Averineni, Ranjith Kumar & Bhat, Mahalingam & Udupa, Nayanabhirama Development of RP-HPLC method for simultaneous estimation of lactic acid and glycolic acid. Der Pharma Chemica. 2013;5(4):335-340.
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[19] Nebra Y, Blanch AR. A new selective medium for Bifidobacteriumspp. Applied and Environmental Microbiology. 1999;65(11):5173-5176.
[20] Gupta R, Beg Q, Lorenz P. Bacterial alkaline proteases: Molecular approaches and industrial applications. Applied Microbiology and Biotechnology. 2002;59(1):15-32.
[21] Cruz Ramos H, Hoffmann T, Marino M et al. Fermentative metabolism of Bacillus subtilis: Physiology and regulation of gene expression. Journal of Bacteriology. 2000;182(11):3072-3080."
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Article | KnE Open
KnE Life Sciences
ISSN: 2413-0877
The latest conference proceedings on life sciences, medicine and pharmacology.
A Model for SynbioticActivity Evaluation: Static and Continuous Co-Culture Fermentation of BifidobacteriumAdolescentis ATCC 15703 and Bacillus Cereus ATCC 9634
Authors:
Svetlana Aleksandrovna Evdokimova D.Mendeleev University of Chemical Technology of Russia, 125480 Moscow, Russia
Vera Stanislavovna Nokhaeva D.Mendeleev University of Chemical Technology of Russia, 125480 Moscow, Russia
Boris Alekseevich Karetkin karetkin@muctr.ru D.Mendeleev University of Chemical Technology of Russia, 125480 Moscow, Russia
Irina Vasilievna Shakir D.Mendeleev University of Chemical Technology of Russia, 125480 Moscow, Russia
Viktor Ivanovich Panfilov D.Mendeleev University of Chemical Technology of Russia, 125480 Moscow, Russia
Abstract:
In this study, the ability of a probioticstrain (BifidobacteriumadolescentisATCC 15703) to inhibit the growth of the common food contaminantBacilluscereusATCC 9634was studied, both individually and as part of a synbiotic with FOS during batch or continuous fermentation (flow fermentation). The conditions of the flow fermentation corresponded to the parameters of the human large intestine: maintaining a pH of 6.8; anaerobiosis; and a medium flow rate of 0.04 h−1. Bifidobacteria and bacilli were co-cultivated on a prebiotic carbohydrate substrate (10 g/L) and the prebiotic was replaced with glucose (10 g/L).The results of the batch and flow fermentation were compared.The synbiotic efficacy of the probioticBif. adolescentisand the prebiotic FOSagainst the common food contaminantBac. cereuswas shown for all conditions. Fermentation of a pure culture of bifidobacteria with varying prebiotic concentrations (2, 5, 10, 15 and 20 g/L) was carried out to study the state of dynamic balance. It was demonstrated that 48 hours is enough to achieve stable dynamic balance.Prebiotics were co-cultivated with varying carbohydrate concentrations of 5, 10, and 15 g/L.The results showed that increasing the prebiotic concentration increased the duration of the lag-phase and reduced the final number of bacilli.
Keywords: probiotics, prebiotics, synbiotics, gastrointestinal tract modeling, antagonism, co-culture fermentation
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