The effect of aluminum-silicon sorbent on the viability of lactobacilli at various pH indicators

Poster (download) Tatiana V. Popova1, Irina S. Andreva2, Lubov N. Rachkovskay3, Anastasiya A. Kotlyarova41RICEL – Branch of IC&G SB RAS Novosibirsk, Russia, argentum.popova@mail.ru2FBRI State Research Center of Virology and Biotechnology Vector of Rospotrebnadzor, Russia, andreeva@vector.nsc.ru3RICEL – Branch of IC&G SB RAS Novosibirsk, Russia, noolit@niikel.ru4RICEL – Branch of IC&G SB RAS Novosibirsk, Russia, kotlyarova@bionet.nsc.ru This study was shown the dependence of the viability Lactobacillus cells bacteria on the interaction with the sorbent at different pH (7.0, 1.2, 8.0) of the medium. The study proved that the sorbent TAGA is an unfavorable factor for the microorganisms Lactobacillus acidophilus at pH 1.2

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Whole genome of novel Lactobacillus fermentum HFD1 strain producing various antimicrobial metabolites

    Poster (download)   Georgii Ozhegov1, Monyr Nait Yahia2, Alexey Vasilchenko3, Natalya Gogoleva4, Dina Yarullina5, Airat Kaumov6 1Kazan Federal University, Kazan, Russia; Perm State Pharmaceutical Academy, Perm, Russia, georgii_provisor@mail.ru 2Kazan Federal University, Kazan, Russia, monyrnait94@gmail.com 3University of Tyumen, Tyumen, Russia, avasilchenko@gmail.com 4Kazan Federal University, Kazan, Russia; Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Kazan, Russia, NEGogoleva@kpfu.ru 5Kazan Federal University, Kazan, Russia, kasfes@gmail.com 6Kazan Federal University, Kazan, Russia, kairatr@yandex.ru Lactobacilli, generally recognized as safe for humans, are characterized with high antagonistic properties. Among 40 strains of Lactobacilli isolated from the faeces of healthy humans, Lactobacillus fermentum HFD1 exhibited significant antimicrobial activity against various nosocomial pathogens. The genome of L.fermentum HFD1 was sequenced on Illumina MiSeq and ONT MinION instruments. After reads assembly 2 circular contigs with respective sizes of 2101878 bp and 5386 bp have been obtained. The raw reads alignment with BWA and post-assembly assessment showed that 99.9% of Illumina reads and 99.2% of MinION reads were mapped to assembled genome. The genome was read with 575x coverage for Illumina data and 454x coverage for MinION data. Based on genome alignment L. fermentum FTDC8312 was found as closest related strain. The BLAST search identified the short contig as similar to bacterophage phiX174. In the genome 2120 coding sequences (CDS) were predicted. Among them 606 were annotated as hypothetical without known biological role. By using CAMPr3, ADAM and AMPA services 5 CDSs with highest summary prediction score were identified as coding for antimicrobial peptides. Further validation of their antimicrobial activity in vitro is required.

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