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Beshah A, Muleta D, Legese G, Assefa F. Exploring stress-tolerant plant growth-promoting rhizobacteria from groundnut rhizosphere soil in semi-arid regions of Ethiopia. PLANT SIGNALING & BEHAVIOR 2024; 19:2365574. [PMID: 38912872 PMCID: PMC11197918 DOI: 10.1080/15592324.2024.2365574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Accepted: 06/04/2024] [Indexed: 06/25/2024]
Abstract
The potential of rhizobacteria with plant growth promoting (PGP) traits in alleviating abiotic stresses, especially drought, is significant. However, their exploitation in the semi-arid regions of Ethiopian soils remains largely unexplored. This research aimed to isolate and evaluate the PGP potential of bacterial isolates collected from groundnut cultivation areas in Ethiopia. Multiple traits were assessed, including phosphate solubilization, indole-3-acetic acid (IAA) production, ammonia production, salt and heavy metal tolerance, drought tolerance, enzyme activities, hydrogen cyanide production, antibiotic resistance, and antagonistic activity against fungal pathogens. The identification of potent isolates was carried out using MALDI-TOF MS. Out of the 82 isolates, 63 were gram-negative and 19 were gram-positive. Among them, 19 isolates exhibited phosphate solubilization, with AAURB 34 demonstrating the highest efficiency, followed by AURB 12. Fifty-six isolates produce IAA in varying amounts and all isolates produce ammonia with AAURB12, AAURB19, and AAURB34 displaying strong production. Most isolates demonstrated tolerance to temperatures up to 40°C and salt concentrations up to 3%. Notably, AAURB12 and AAURB34 exhibited remarkable drought tolerance at an osmotic potential of -2.70 Mpa. When subjected to levels above 40%, the tested isolates moderately produced lytic enzymes and hydrogen cyanide. The isolates displayed resistance to antibiotics, except gentamicin, and all isolates demonstrated resistance to zinc, with 81-91% showing resistance to other heavy metals. AAURB34 and AAURB12 exhibited suppression against fungal pathogens, with percent inhibition of 38% and 46%, respectively. Using MALDI-TOF MS, the promising PGP isolates were identified as Bacillus megaterium, Bacillus pumilus, and Enterobacter asburiae. This study provides valuable insights into the potential of rhizobacteria as PGP agents for mitigating abiotic stresses and contribute to the understanding of sustainable agricultural practices in Ethiopia and similar regions facing comparable challenges.
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Affiliation(s)
- Asnake Beshah
- Department of Cellular, Microbial and Molecular Biology, Addis Ababa University, Addis Ababa, Ethiopia
| | - Driba Muleta
- Biotechnology Institute, Addis Ababa University, Addis Ababa, Ethiopia
| | - Gudina Legese
- Center for Environmental Science, Addis Ababa University, Addis Ababa, Ethiopia
| | - Fassil Assefa
- Department of Cellular, Microbial and Molecular Biology, Addis Ababa University, Addis Ababa, Ethiopia
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Yang Y, Zhao Y, Lei H. Protective effects of Lactococcus lactis subsp. lactis HFY14 supplementation on the brain, intestines, and motor function of antibiotic-treated mice. Front Microbiol 2024; 15:1418556. [PMID: 38946910 PMCID: PMC11211273 DOI: 10.3389/fmicb.2024.1418556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/03/2024] [Indexed: 07/02/2024] Open
Abstract
Introduction This study aimed to explore the anti-oxidative and anti-inflammatory properties of Lactococcus lactis subsp. lactis HFY14 (LLSLHFY14) and investigate its effects on the intestinal barrier, cranial nerve, and motor function in mice treated with antibiotics. Methods Mice were administered an antibiotic mixture (neomycin 5 mg/mL, vancomycin 25 mg/mL, amphotericin B 0.1 mg/mL, ampicillin 10 mg/mL, metronidazole file 5 mg/mL, and lipopolysaccharide 1.5 μg/mL) intraperitoneally, and oxidative stress and inflammatory markers in the serum and brain tissues, and liver index were measured. H&E staining was performed to detect pathological alterations in brain tissues. The expression of intestinal-barrier-related genes and that of genes involved in inflammatory pathways in the brain were detected using polymerase chain reaction (PCR). Results LLSLHFY14 administration extended the weight-loaded swimming and running times of mice and decreased the liver index. Moreover, the levels of malondialdehyde (MDA), interleukin-6 (IL-6), and tumor necrosis factor alpha (TNF-α) in the serum and brain tissue were reduced, whereas those of superoxide dismutase (SOD), glutathione (GSH), and interleukin-10 (IL-10) were elevated. Elevated brain expression of the protein kinase B (AKT)/cAMP-response element binding protein (CREB)/brain-derived neurotrophic factor (BDNF)/extracellular signal-regulated kinase 1 (ERK1) pathway, decreased brain expression of the IL-6 gene, and elevated cecum expression of zonula occludens-1 (ZO-1), occludin-1, and claudin-1 genes were noted. LLSLHFY14 supplementation significantly increased Bacteroidetes expression but decreased Firmicutes expression, thus increasing the Bacteroidetes/Firmicutes ratio. Discussion Overall, LLSLHFY14 supplementation ameliorated antibiotic-induced oxidative stress and inflammation in the mouse central nervous system, intestinal barrier dysfunction, and increased motor function, thus confirming its potential application as probiotics.
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Affiliation(s)
- Yang Yang
- College of Physical Education, Chengdu Sport University, Chengdu, Sichuan, China
| | - Yuanji Zhao
- School of Physical Education, Wuhan Sports University, Wuhan, Hubei, China
| | - Huan Lei
- College of Physical Education, Chengdu Sport University, Chengdu, Sichuan, China
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Pinchao YA, Serna-Cock L, Mora OO. Probiotic capacity of commensal lactic acid bacteria from the intestine of Guinea pigs ( Cavia porcellus). Heliyon 2024; 10:e29431. [PMID: 38655303 PMCID: PMC11035050 DOI: 10.1016/j.heliyon.2024.e29431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 04/05/2024] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
The intricate balance of intestinal microbiota is significantly influenced by the pivotal role of indigenous lactic acid bacteria (LAB). These LAB not only contribute to antimicrobial activity and enhance animal health and productivity but also serve as defense against intestinal infections. In the present study, the probiotic potential of LAB strains isolated from various intestinal sections of adult and young guinea pigs (Cavia porcellus) was comprehensively assessed. Strains belonging to the genera Ligilactobacillus, Weissella, Enterococcus, and Limosilactobacillus were also identified. The antibacterial activities of the LAB strains against Salmonella typhimurium, Escherichia coli, and Staphylococcus aureus were quantified. Exopolysaccharide production, adherence capacity, antibiotic resistance, and bile salt tolerance (0.15 %, 0.30 %, and 0.45 %) of LAB were quantified. Further analyses focused on the effects of pH (2.9, 5.0, 6.4, and 7.4), temperature (40, 50, and 60 °C) and NaCl concentrations (3.5 % and 6.5 % w/v) on LAB growth. Strains GCI9 and GDE10 (Ligilactobacillus salivarius), isolated from the cecum and intestine of guinea pigs, exhibited significant antimicrobial activity against S. typhimurium, E. coli and S. aureus. Remarkable adherence capacity to porcine gastric mucin was demonstrated by L. salivarius strains, specifically ACI1, GCI9, and GDE10, with the highest exopolysaccharide levels produced by ACI1 and GCI9 (1.71 and 1.76 mg/mL, respectively). The probiotic potential was further underscored by remarkable bile salt tolerance, especially in strain GDE10, and substantial exopolysaccharide production. These strains displayed notable adaptability to varying environmental conditions, including NaCl concentrations at 3.5 % and 6.5 %, temperatures ranging from 40 to 60 °C, and pH levels of 2.9, 5.0, 6.4, and 7.4. This comprehensive assessment of the probiotic properties of L. salivarius strains, particularly ACI1, GCI9, and GDE10, shows promise for the development of probiotic formulations aimed at enhancing the intestinal health of guinea pigs.
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Affiliation(s)
- Yamid A. Pinchao
- Faculty of Engineering and Administration, Universidad Nacional de Colombia, Palmira, Colombia
| | - Liliana Serna-Cock
- Faculty of Engineering and Administration, Universidad Nacional de Colombia, Palmira, Colombia
| | - Oswaldo Osorio Mora
- Faculty of Agroindustrial Engineering, Universidad de Nariño, San Juan de Pasto, Colombia
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Zare H, Izadi Amoli R, Zaboli F, Rezapour M, Kaboosi H. The phenotypic and genotypic antibiotic susceptibility of vaginal Lactobacillus with potential probiotic properties isolated from healthy women in northern Iran. IRANIAN JOURNAL OF MICROBIOLOGY 2024; 16:227-235. [PMID: 38854974 PMCID: PMC11162166 DOI: 10.18502/ijm.v16i2.15356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Background and Objectives This study assesses the antibiotic susceptibility of vaginal Lactobacillus strains and provides data for determining the prevalence of certain antibiotic resistance genes in the new strains of lactobacilli serving as probiotics and selected from healthy women in northern Iran. Materials and Methods One hundred premenopausal non-pregnant women in the reproductive age range of 22-50 years participated in this study. The potential probiotic vaginal lactobacilli used in the study included Lactobacillus crispatus (34.2%), Lactobacillus gasseri (26.3%), Lactobacillus johnsonii (10.5%), Lactobacillus acidophilus (15.7%) and Lactobacillus jensenii (13.1%). The phenotypic antibiotic susceptibility of the strains was determined by E test and DNA extraction and PCR were performed to examine the antibiotic resistance genes. Results 38 potential probiotic vaginal lactobacilli were isolated. All the strains of lactobacilli were resistant to metronidazole and trimethoprim/sulfamethoxazole and all of the strains were susceptible to ampicillin and chloramphenicol antibiotics. The results showed that ermB, ermC, and ermA genes were observed in the strains of Lactobacillus acidophilus. Metronidazole resistance (nim) gene was also found in one strain of Lactobacillus crispatus and Lactobacillus johnsonii. The aminoglycoside resistance (aac6'-aph2″) gene was observed in 8% of the strains. Also, tetM, tetK and tetW genes were found in more than 80% of the Lactobacillus strains. Conclusion The antimicrobial susceptibility of vaginal lactobacilli is an important criterion for establishing whether or not the organism is a probiotic. A high level of resistance to clinical antibiotics, such as metronidazole and aminoglycosides, was demonstrated. Antibiotic resistant genes also appeared widely in vaginal lactobacilli.
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Affiliation(s)
- Hakimeh Zare
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Rabeeh Izadi Amoli
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Fatemeh Zaboli
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
| | - Maysam Rezapour
- Department of Paramedicine, Amol School of Paramedical Sciences, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hami Kaboosi
- Department of Microbiology, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
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Ugras S, Fidan A, Yoldas PA. Probiotic potential and wound-healing activity of Pediococcus pentosaceus strain AF2 isolated from Herniaria glabra L. which is traditionally used to make yogurt. Arch Microbiol 2024; 206:115. [PMID: 38383810 DOI: 10.1007/s00203-024-03831-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/26/2023] [Accepted: 01/01/2024] [Indexed: 02/23/2024]
Abstract
Probiotics have been a part of our lives for centuries, primarily through fermented foods. They find applications in various fields such as food, healthcare, and agriculture. Nowadays, their utilization is expanding, highlighting the importance of discovering new bacterial strains with probiotic properties suitable for diverse applications. In this study, our aim was to isolate new probiotic bacteria. Herniaria glabra L., a plant traditionally used for yogurt making in some regions and recognized in official medicine in many countries, was chosen as the source for obtaining probiotic bacteria. We conducted bacterial isolation from the plant, molecularly identified the isolated bacteria using 16S rRNA sequencing, characterized their probiotic properties, and assessed their wound-healing effects. As a result of these studies, we identified the bacterium isolated from the plant as Pediococcus pentosaceus strain AF2. We found that the strain AF2 exhibited high resistance to conditions within the gastrointestinal tract. Our reliability analysis showed that the isolate had γ-hemolytic activity and displayed sensitivity to certain tested antibiotics. At the same time, AF2 did not show gelatinase and DNase activity. We observed that the strain AF2 produced metabolites with inhibitory activity against E. coli, B. subtilis, P. vulgaris, S. typhimurium, P. aeruginosa, K. pneumoniae, E. cloacae, and Y. pseudotuberculosis. The auto-aggregation value of the strain AF2 was calculated at 73.44%. Coaggregation values against E. coli and L. monocytogenes bacteria were determined to be 56.8% and 57.38%, respectively. Finally, we tested the wound-healing effect of the strain AF2 with cell culture studies and found that the strain AF2 promoted wound healing.
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Affiliation(s)
- Serpil Ugras
- Department of Biology, Faculty of Art and Science, Duzce University, Duzce, 81620, Türkiye.
| | - Aysenur Fidan
- Department of Biology, Graduate School, Duzce University, Duzce, 81620, Türkiye
| | - Pinar Agyar Yoldas
- Duzce University, Traditional and Complementary Medicine Applied and Research Center, Duzce, Türkiye
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Oviedo-León JF, Cornejo-Mazón M, Ortiz-Hernández R, Torres-Ramírez N, Hernández-Sánchez H, Castro-Rodríguez DC. Exploration adhesion properties of Liquorilactobacillus and Lentilactobacillus isolated from two different sources of tepache kefir grains. PLoS One 2024; 19:e0297900. [PMID: 38324577 PMCID: PMC10849267 DOI: 10.1371/journal.pone.0297900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024] Open
Abstract
Due to the distinctive characteristics of probiotics, it is essential to pinpoint strains originating from diverse sources that prove efficacious in addressing a range of pathologies linked to dysfunction of the intestinal barrier. Nine strains of lactic acid bacteria were isolated from two different sources of tepache kefir grains (KAS2, KAS3, KAS4, KAS7, KAL4, KBS2, KBS3, KBL1 and KBL3), and were categorized to the genus Lacticaseibacillus, Liquorilactobacillus, and Lentilactobacillus by 16S rRNA gene. Kinetic behaviors of these strains were evaluated in MRS medium, and their probiotic potential was performed: resistance to low pH, tolerance to pepsin, pancreatin, bile salts, antibiotic resistance, hemolytic activity, and adhesion ability. KAS7 strain presented a higher growth rate (0.50 h-1) compared with KAS2 strain, who presented a lower growth rate (0.29 h-1). KBS2 strain was the only strain that survived the in vitro stomach simulation conditions (29.3%). Strain KBL1 demonstrated significantly higher viability (90.6%) in the in vitro intestine simulation conditions. Strain KAS2 demonstrated strong hydrophilic character with chloroform (85.6%) and xylol (57.6%) and a higher percentage of mucin adhesion (87.1%). However, strains KBS2 (84.8%) and KBL3 (89.5%) showed the highest autoaggregation values. In terms of adhesion to the intestinal epithelium in rats, strains KAS2, KAS3 and KAS4 showed values above 80%. The growth of the strains KAS2, KAS3, KAS4, KBS2, and KBL3 was inhibited by cefuroxime, cefotaxime, tetracycline, ampicillin, erythromycin, and cephalothin. Strains KBS2 (41.9% and 33.5%) and KBL3 (42.5% and 32.8%) had the highest co-aggregation values with S. aureus and E. coli. The results obtained in this study indicate that lactic acid bacteria isolated from tepache can be considered as candidates for potentially probiotic bacteria, laying the foundations to evaluate their probiotic functionality in vivo and thus to be used in the formulation of functional foods.
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Affiliation(s)
- Julián Fernando Oviedo-León
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Mexico City, Mexico
| | - Maribel Cornejo-Mazón
- Departamento Biofísica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Carpio y Plan de Ayala, Mexico City, Mexico
| | - Rosario Ortiz-Hernández
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City, Mexico
| | - Nayeli Torres-Ramírez
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City, Mexico
| | - Humberto Hernández-Sánchez
- Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional Adolfo López Mateos, Mexico City, Mexico
| | - Diana C. Castro-Rodríguez
- Investigadores CONAHCyT, Departamento de Biología de la Reproducción, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
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Montes YMG, Calle ERV, Terán SGS, García MRC, Nájera JCR, Vera MRL. Growth kinetics of Lactococcus lactis and Lactobacillus casei in liquid culture medium containing as prebiotics inulin or fructose. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:1258-1270. [PMID: 37801661 DOI: 10.1002/jsfa.13032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 07/21/2023] [Accepted: 07/27/2023] [Indexed: 10/08/2023]
Abstract
BACKGROUND Predictive microbiology is a tool that allows us to evaluate the behavior of the concentration of biomass and estimated cells under extrinsic conditions, providing scientific and industrial benefits. In the present study, the growth of L. lactis and L. casei combined with inulin and fructose was modeled using the Gompertz sigmoidal growth functions and plotted using data obtained from batch culture in relation to biomass and cell concentration expressed as estimates in ln N (OD600nm and cells mL-1 ) as a function of time. RESULTS The results of the kinetic modeling indicated that (T1) A1B1 = L. lactis + fructose and (T4) A2B2 = L. casei + inulin presented the best function coefficients and best fits in most cases compared to the rest. The specific growth rate of the maximum acceleration was from 0.364 to 0.473 h-1 and 0.100 to 0.129 h-1 , the concentration of bacterial cells (A) was from 0.556 to 0.713 and 0.425 to 0.548 respectively and the time where (μ) occurred with a greater magnitude (L) fluctuated between 0.854 and 0.802 and when this time in (L) is very fast, it presents values of ≤0.072 to ≤0.092. Its coefficient of determination and/or multiple regression (R2 ) obtained in the two adjustments was 0.97. CONCLUSION It was possible to predict the influence of the carbon source on the behavior of maximum growth rates, higher consumption due to nutrient affinity and shorter growth time. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yessenia Maribel García Montes
- Departamento de Ciencias de Alimentos y Biotecnología, Escuela Politécnica Nacional, Quito, Ecuador
- Facultad de Ciencias de la Vida y Tecnologías, Universidad Laica 'Eloy Alfaro' de Manabí, Av. Circunvalación, Manta, Ecuador
| | - Edwin Rafael Vera Calle
- Departamento de Ciencias de Alimentos y Biotecnología, Escuela Politécnica Nacional, Quito, Ecuador
| | - Stalin Gustavo Santacruz Terán
- Facultad de Ciencias de la Vida y Tecnologías, Universidad Laica 'Eloy Alfaro' de Manabí, Av. Circunvalación, Manta, Ecuador
| | - Marlon Reinaldo Castro García
- Facultad de Ciencias de la Vida y Tecnologías, Universidad Laica 'Eloy Alfaro' de Manabí, Av. Circunvalación, Manta, Ecuador
| | | | - Mario René Lopez Vera
- Laboratorio de Microbiología Ambiental, Escuela Superior Politécnica Agropecuaria de Manabí 'MFL', Calceta, Ecuador
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Gökmen GG, Sarıyıldız S, Cholakov R, Nalbantsoy A, Baler B, Aslan E, Düzel A, Sargın S, Göksungur Y, Kışla D. A novel Lactiplantibacillus plantarum strain: probiotic properties and optimization of the growth conditions by response surface methodology. World J Microbiol Biotechnol 2024; 40:66. [PMID: 38194015 PMCID: PMC10776492 DOI: 10.1007/s11274-023-03862-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/30/2023] [Indexed: 01/10/2024]
Abstract
The objective of this study is to explore the probiotic properties and optimal growth conditions of Lactiplantibacillus plantarum BG24. L. plantarum BG24 exhibited a remarkable ability to utilize lactose, and to grow under acidic conditions and in the presence of high levels of bile salts. The strain showed the highest antibacterial activity against L. monocytogenes Scott A (zone of inhibition: 26 mm). L. plantarum BG24 was found to be resistant to 8 of the tested 19 antibiotics using the disc diffusion method.and its multiple antibiotic resistance (MAR) index was calculated as 0.421. The adhesion rate to human intestinal epithelial Caco-2 cells was determined as 37.51%. The enzyme profile of L. plantarum BG24 was investigated using API ZYM test kit and the highest enzymatic activities were found for Leucine arylamidase, β-glucosidase, Valine arylamidase, β-galactosidase and N-acetyl-β-glucosaminidase. L. plantarum BG24 strain showed higher microbial growth under static conditions (6.60 OD600) compared to 100 rpm (5.73 OD600) and 200 rpm (5.02 OD600) shaking speed due to its facultative anaerobic characteristic. However, different inoculation rates and glucose addition did not make a statistically significant difference on biomass formation (p > 0.05). The specific growth rate of L. plantarum BG24 was 0.416 h-1, the doubling time was 1.67 h, and the biomass productivity value was 0.14 gL-1 h-1 in the original MRS broth (pH 5.7) while higher values were found as 0.483 h-1, 1.43 h and 0.17 gL-1 h-1, respectively, in MRS broth (pH 6.5) medium enriched with 5 g/L yeast extract. The stirred tank bioreactor was used to optimise the growth of BG24 strain. The process variables was optimized at 0.05 vvm of aeration rate, 479 rpm of agitation speed, 3% of inoculation rate and 18 h of incubation time. The maximum biomass (g/L) production was obtained as 3.84 g/L at the optimized conditions.
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Affiliation(s)
- Gökhan Gurur Gökmen
- Engineering Faculty, Food Engineering Department, Ege University, Bornova, Izmir, Türkiye
| | - Seda Sarıyıldız
- Engineering Faculty, Food Engineering Department, Ege University, Bornova, Izmir, Türkiye
| | - Remzi Cholakov
- Kaasmakerij Özgazi, Nijverheidsweg 39, 4879, AP, Etten-Leur, The Netherlands
| | - Ayşe Nalbantsoy
- Engineering Faculty, Bioengineering Department, Ege University, Bornova, Izmir, Türkiye
| | - Biray Baler
- Engineering Faculty, Bioengineering Department, Ege University, Bornova, Izmir, Türkiye
| | - Emek Aslan
- Agricultural Faculty, Agricultural Biotechnology Department, Ondokuz Mayıs University, Atakum, Samsun, Türkiye
| | - Ahmet Düzel
- Faculty of Engineering and Architecture, Bioengineering Department, Sinop University, Nasuhbasoglu, Sinop, Türkiye
| | - Sait Sargın
- Faculty of Engineering and Natural Sciences, Department of Bioengineering, Bursa Technical University, Yildirim, Bursa, Türkiye
| | - Yekta Göksungur
- Engineering Faculty, Food Engineering Department, Ege University, Bornova, Izmir, Türkiye
| | - Duygu Kışla
- Engineering Faculty, Food Engineering Department, Ege University, Bornova, Izmir, Türkiye.
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Cha X, Lin Y, Brennan C, Cao J, Shang Y. Antibiotic Resistance of Bacillus cereus in Plant Foods and Edible Wild Mushrooms in a Province. Microorganisms 2023; 11:2948. [PMID: 38138092 PMCID: PMC10745370 DOI: 10.3390/microorganisms11122948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Bacillus cereus is a common pathogen causing foodborne diseases, secreting and producing a large number of toxins that can cause a variety of diseases and pose many threats to human health. In this study, 73 strains of Bacillus cereus were isolated and identified from six types of foods from seven different cities in a province, and the antibiotic-resistant phenotype was detected by using the Bauer-Kirby method. Results showed that the 73 isolates were completely sensitive to gentamicin and 100% resistant to chloramphenicol, in addition to which all strains showed varying degrees of resistance to 13 other common antibiotics, and a large number of strains resistant to multiple antibiotics were found. A bioinformatic analysis of the expression of resistance genes in Bacillus cereus showed three classes of antibiotic-resistant genes, which were three of the six classes of antibiotics identified according to the resistance phenotype. The presence of other classes of antibiotic-resistant genes was identified from genome-wide information. Antibiotic-resistant phenotypes were analyzed for correlations with genotype, and remarkable differences were found among the phenotypes. The spread of antibiotic-resistant strains is a serious public health problem that requires the long-term monitoring of antimicrobial resistance in Bacillus cereus, and the present study provides important information for monitoring antibiotic resistance in bacteria from different types of food.
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Affiliation(s)
- Xiaoyan Cha
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; (X.C.); (Y.L.); (C.B.)
| | - Yingting Lin
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; (X.C.); (Y.L.); (C.B.)
| | - Charles Brennan
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; (X.C.); (Y.L.); (C.B.)
- School of Science, Royal Melbourne Institute of Technology University, Melbourne 3000, Australia
| | - Jianxin Cao
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; (X.C.); (Y.L.); (C.B.)
| | - Ying Shang
- Faculty of Food Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; (X.C.); (Y.L.); (C.B.)
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Đorđević J, Ledina T, Golob M, Mohar Lorbeg P, Čanžek Majhenič A, Bogovič Matijašić B, Bulajić S. Safety evaluation of enterococci isolated from raw milk and artisanal cheeses made in Slovenia and Serbia. FOOD SCI TECHNOL INT 2023; 29:765-775. [PMID: 35912485 DOI: 10.1177/10820132221117870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Enterococci represent a significant part of the non-starter LAB microbiota of artisanal cheeses produced mainly from raw milk. Common approaches to safety evaluation of enterococci isolates include assessment of antimicrobial resistance and virulence potential. Hence, a collection of 47 (n = 22, Serbia; n = 25, Slovenia) dairy enterococcal isolates, of which E. faecalis (n = 28), E. faecium (n = 11), E. durans (n = 5), E. casseliflavus (n = 2), and E. gallinarum (n = 1), was analyzed. The susceptibility to 12 antimicrobials was tested using a broth microdilution method, and the presence of the selected antimicrobial resistance and virulence genes was investigated using PCR. Isolates were resistant to tetracycline (TET) (25.5%), erythromycin (ERY) (17.0%), gentamycin and chloramphenicol (CHL) (∼6%). No resistance to ampicillin (AMP), ciprofloxacin (CIP), daptomycin (DAP), linezolid (LZD), teicoplanin (TEI), tigecycline (TGC) and vancomycin (VAN) was detected. Among all the resistance determinants analyzed, ermB gene was detected most frequently. All 10 virulence genes analyzed were detected with a distribution of cpd (72.3%), cob and ccf (70.2%), gelE (68.1%), hyl (59.6%), agg (53.2%) and esp (46.8%). The genes encoding cytolysin (cylA, cylM and cylB) were amplified to a lesser extent (21.3%, 21.3% and 12.8%, respectively). However, due to the limited number of enterococci isolates analyzed in the present study, further studies are still required in order to better document the safety status of dairy enterococci.
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Affiliation(s)
- Jasna Đorđević
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - Tijana Ledina
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
| | - Majda Golob
- Veterinary Faculty, Institute of Microbiology and Parasitology, University of Ljubljana, Ljubljana, Slovenia
| | - Petra Mohar Lorbeg
- Biotechnical Faculty, Institute of Dairy Science and Probiotics, Ljubljana, Slovenia
| | | | | | - Snežana Bulajić
- Faculty of Veterinary Medicine, University of Belgrade, Belgrade, Serbia
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Shahali A, Soltani R, Akbari V. Probiotic Lactobacillus and the potential risk of spreading antibiotic resistance: a systematic review. Res Pharm Sci 2023; 18:468-477. [PMID: 37842520 PMCID: PMC10568962 DOI: 10.4103/1735-5362.383703] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/21/2022] [Accepted: 11/02/2022] [Indexed: 10/17/2023] Open
Abstract
Background and purpose Lactobacillus, the most popular probiotic, has recently gained more attention because it is a potential reservoir of antibiotic resistance. This review summarized and discussed the phenotypic-genotypic characteristics of antibiotic resistance. Experimental approach Google Scholar, PubMed, Web of Science, and Scopus were searched up to February 2022. The inclusion criteria were all studies testing antibiotic resistance of probiotic Lactobacillus strains present in human food supplementation and all human/animal model studies in which transferring antibiotic-resistant genes from Lactobacillus strains to another bacterium were investigated. Findings/Results Phenotypic and genotypic characterization of Lactobacillus probiotics showed that the most antibiotic resistance was against protein synthesis inhibitors (fourteen studies, 87.5%) and cell wall synthesis inhibitors (ten studies, 62.5%). Nine of these studies reported the transfer of antibiotic resistance from Lactobacillus probiotic as donor species to pathogenic bacteria and mostly used in vitro methods for resistance gene transfer. Conclusion and implications The transferability of resistance genes such as tet and erm in Lactobacillus increases the risk of spreading antibiotic resistance. Further studies need to be conducted to evaluate the potential spread of antibiotic resistance traits via probiotics, especially in elderly people and newborns.
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Affiliation(s)
- Ali Shahali
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
- Department of Pharmaceutics, College of Pharmacy, University of the Punjab, Lahore, Pakistan
| | - Rasool Soltani
- Department of Clinical Pharmacy and Pharmacy Practice, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
| | - Vajihe Akbari
- Department of Pharmaceutical Biotechnology, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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Gana J, Gcebe N, Pierneef RE, Chen Y, Moerane R, Adesiyun AA. Genomic Characterization of Listeria innocua Isolates Recovered from Cattle Farms, Beef Abattoirs, and Retail Outlets in Gauteng Province, South Africa. Pathogens 2023; 12:1062. [PMID: 37624022 PMCID: PMC10457781 DOI: 10.3390/pathogens12081062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
Whole-genome sequencing (WGS) was used for the genomic characterization of one hundred and ten strains of Listeria innocua (L. innocua) isolated from twenty-three cattle farms, eight beef abattoirs, and forty-eight retail outlets in Gauteng province, South Africa. In silico multilocus sequence typing (MLST) was used to identify the isolates' sequence types (STs). BLAST-based analyses were used to identify antimicrobial and virulence genes. The study also linked the detection of the genes to the origin (industries and types of samples) of the L. innocua isolates. The study detected 14 STs, 13 resistance genes, and 23 virulence genes. Of the 14 STs detected, ST637 (26.4%), ST448 (20%), 537 (13.6%), and 1085 (12.7%) were predominant, and the frequency varied significantly (p < 0.05). All 110 isolates of L. innocua were carriers of one or more antimicrobial resistance genes, with resistance genes lin (100%), fosX (100%), and tet(M) (30%) being the most frequently detected (p < 0.05). Of the 23 virulence genes recognized, 13 (clpC, clpE, clpP, hbp1, svpA, hbp2, iap/cwhA, lap, lpeA, lplA1, lspA, oatA, pdgA, and prsA2) were found in all 110 isolates of L. innocua. Overall, diversity and significant differences were detected in the frequencies of STs, resistance, and virulence genes according to the origins (source and sample type) of the L. innocua isolates. This, being the first genomic characterization of L. innocua recovered from the three levels/industries (farm, abattoir, and retail) of the beef production system in South Africa, provides data on the organism's distribution and potential food safety implications.
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Affiliation(s)
- James Gana
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (J.G.); (R.M.)
- Agricultural Education, Federal College of Education, Kontagora 923101, Nigeria
| | - Nomakorinte Gcebe
- Bacteriology Department, Onderstepoort Veterinary Research, Agricultural Research Council, Pretoria 0110, South Africa;
| | - Rian Ewald Pierneef
- Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria 0001, South Africa;
- Centre for Bioinformatics and Computational Biology, University of Pretoria, Pretoria 0001, South Africa
- Microbiome@UP, Department of Biochemistry, Genetics, and Microbiology, University of Pretoria, Pretoria 0001, South Africa
| | - Yi Chen
- Center for Food Safety and Applied Nutrition, US Food and Drug Administration, 5001 Campus Dr. Room 4E-007/Mailstop HFS-710, College Park, MD 20740, USA;
| | - Rebone Moerane
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (J.G.); (R.M.)
| | - Abiodun Adewale Adesiyun
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (J.G.); (R.M.)
- School of Veterinary Medicine, Faculty of Medical Sciences, University of the West Indies, St. Augustine 685509, Trinidad and Tobago
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Seo MJ, Won SM, Kwon MJ, Song JH, Lee EB, Cho JH, Park KW, Yoon JH. Screening of lactic acid bacteria with anti-adipogenic effect and potential probiotic properties from grains. Sci Rep 2023; 13:11022. [PMID: 37419937 PMCID: PMC10329024 DOI: 10.1038/s41598-023-36961-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/13/2023] [Indexed: 07/09/2023] Open
Abstract
A total of 187 lactic acid bacteria were isolated from four types of grains collected in South Korea. The bacterial strains were assigned as members of Levilactobacillus brevis, Latilactobacillus curvatus, Lactiplantibacillus plantarum, Lactococcus taiwanensis, Pediococcus pentosaceus, and Weissella paramesenteroides based on the closest similarity using 16S rRNA gene sequence analysis. The strains belonging to the same species were analyzed using RAPD-PCR, and one or two among strains showing the same band pattern were selected. Finally, 25 representative strains were selected for further functional study. Inhibitory effects of lipid accumulation were observed in the strains tested. Pediococcus pentosaceus K28, Levilactobacillus brevis RP21 and Lactiplantibacillus plantarum RP12 significantly reduced lipid accumulation and did not show cytotoxicity in C3H10T1/2 cells at treatment of 1-200 μg/mL. The three LAB strains decreased significantly expression of six adipogenic marker genes, PPARγ, C/EBPα, CD36, LPL, FAS and ACC, in C3H10T1/2 adipocytes. The three strains survived under strong acidity and bile salt conditions. The three strains showed adhesion to Caco-2 cells similar to a reference strain LGG. The resistance of the three strains to several antibiotics was also assessed. Strains RP12 and K28 were confirmed not to produce harmful enzymes based on API ZYM kit results. Based on these results, strains K28, RP21 and RP12 isolated from grains had the ability to inhibit adipogenesis in adipocytes and potentially be useful as probiotics.
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Affiliation(s)
- Min Ju Seo
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Sung-Min Won
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Min Ju Kwon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Ji Hyeon Song
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Eun Bee Lee
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Jun Hyeong Cho
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Kye Won Park
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Jung-Hoon Yoon
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea.
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14
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Duche RT, Singh A, Wandhare AG, Sangwan V, Sihag MK, Nwagu TNT, Panwar H, Ezeogu LI. Antibiotic resistance in potential probiotic lactic acid bacteria of fermented foods and human origin from Nigeria. BMC Microbiol 2023; 23:142. [PMID: 37208603 DOI: 10.1186/s12866-023-02883-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 05/06/2023] [Indexed: 05/21/2023] Open
Abstract
INTRODUCTION Probiotic lactobacilli are generally recognized as safe (GRAS) and are being used in several food and pharma formulations. However, growing concern of antibiotic resistance in bacterial strains of food origin and its possible transmission via functional foods is increasingly being emphasized. OBJECTIVES This study screened potential probiotic lactic acid bacteria (LAB) strains for their phenotypic and genotypic antibiotic resistance profiles. METHODS Susceptibility to different antibiotics was assayed by the Kirby Bauer standard disc diffusion protocol. Both conventional and SYBR-RTq-PCR were used for detection of resistance coding genes. RESULTS A variable susceptibility pattern was documented against different antibiotic classes. LAB strains irrespective of origin displayed marked phenotypic resistance against cephalosporins, aminoglycosides, quinolones, glycopeptides; and methicillin among beta-lactams with few exceptions. In contrast, high sensitivity was recorded against macrolides, sulphonamides and carbapenems sub-group of beta-lactams with some variations. parC, associated with ciprofloxacin resistance was detected in 76.5% of the strains. Other prevalent resistant determinants observed were aac(6?)Ii (42.1%), ermB, ermC (29.4%), and tetM (20.5%). Six (?17.6%) of the isolates were free from genetic resistance determinants screened in this study. CONCLUSION Study revealed presence of antibiotic resistance determinants among lactobacilli from both fermented foods and human sources.
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Affiliation(s)
- Rachael T Duche
- Department of Dairy Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
- Department of Microbiology, Federal University of Agriculture Makurdi-Nigeria, Makurdi, Nigeria
- Department of Microbiology, University of Nigeria Nsukka, Nsukka, Nigeria
- UNESCO International Centre for Biotechnology, Nsukka, Nigeria
| | - Anamika Singh
- Department of Dairy Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Arundhati Ganesh Wandhare
- Department of Dairy Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Vikas Sangwan
- Department of Dairy Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Manvesh Kumar Sihag
- Department of Dairy Chemistry, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India
| | - Tochukwu N T Nwagu
- Department of Microbiology, University of Nigeria Nsukka, Nsukka, Nigeria
| | - Harsh Panwar
- Department of Dairy Microbiology, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India.
| | - Lewis I Ezeogu
- Department of Microbiology, University of Nigeria Nsukka, Nsukka, Nigeria.
- UNESCO International Centre for Biotechnology, Nsukka, Nigeria.
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El Far MS, Zakaria AS, Kassem MA, Wedn A, Guimei M, Edward EA. Promising biotherapeutic prospects of different probiotics and their derived postbiotic metabolites: in-vitro and histopathological investigation. BMC Microbiol 2023; 23:122. [PMID: 37138240 PMCID: PMC10155454 DOI: 10.1186/s12866-023-02866-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/19/2023] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND Probiotics and their derived postbiotics, as cell-free supernatants (CFS), are gaining a solid reputation owing to their prodigious health-promoting effects. Probiotics play a valuable role in the alleviation of various diseases among which are infectious diseases and inflammatory disorders. In this study, three probiotic strains, Lactiplantibacillus plantarum, Lacticaseibacillus rhamnosus, and Pediococcus acidilactici, were isolated from marketed dietary supplements. The antimicrobial activity of the isolated probiotic strains as well as their CFS was investigated. The neutralized CFS of the isolated probiotics were tested for their antibiofilm potential. The anti-inflammatory activity of the isolated Lactobacillus spp., together with their CFS, was studied in the carrageenan-induced rat paw edema model in male Wistar rats. To the best of our knowledge, such a model was not previously experimented to evaluate the anti-inflammatory activity of the CFS of probiotics. The histopathological investigation was implemented to assess the anti-inflammatory prospect of the isolated L. plantarum and L. rhamnosus strains as well as their CFS. RESULTS The whole viable probiotics and their CFS showed variable growth inhibition of the tested indicator strains using the agar overlay method and the microtiter plate assay, respectively. When tested for virulence factors, the probiotic strains were non-hemolytic lacking both deoxyribonuclease and gelatinase enzymes. However, five antibiotic resistance genes, blaZ, ermB, aac(6')- aph(2"), aph(3'')-III, and vanX, were detected in all isolates. The neutralized CFS of the isolated probiotics exhibited an antibiofilm effect as assessed by the crystal violet assay. This effect was manifested by hindering the biofilm formation of the tested Staphylococcus aureus and Pseudomonas aeruginosa clinical isolates in addition to P. aeruginosa PAO1 strain. Generally, the cell cultures of the two tested probiotics moderately suppressed the acute inflammation induced by carrageenan compared to indomethacin. Additionally, the studied CFS relatively reduced the inflammatory changes compared to the inflammation control group but less than that observed in the case of the probiotic cultures treated groups. CONCLUSIONS The tested probiotics, along with their CFS, showed promising antimicrobial and anti-inflammatory activities. Thus, their safety and their potential use as biotherapeutics for bacterial infections and inflammatory conditions are worthy of further investigation.
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Affiliation(s)
- Mona S El Far
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Azza S Zakaria
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Mervat A Kassem
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Abdalla Wedn
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Maha Guimei
- Department of Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Eva A Edward
- Department of Microbiology and Immunology, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt.
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16
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Obioha PI, Anyogu A, Awamaria B, Ghoddusi HB, Ouoba LII. Antimicrobial Resistance of Lactic Acid Bacteria from Nono, a Naturally Fermented Milk Product. Antibiotics (Basel) 2023; 12:antibiotics12050843. [PMID: 37237746 DOI: 10.3390/antibiotics12050843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/27/2023] [Accepted: 04/29/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Antimicrobial resistance (AMR) is one of the biggest threats to public health. The food chain has been recognised as a vehicle for transmitting AMR bacteria. However, information about resistant strains isolated from African traditional fermented foods remains limited. Nono is a traditional, naturally fermented milk product consumed by many pastoral communities across West Africa. The main aim of this study was to investigate and determine the AMR patterns of lactic acid bacteria (LAB) involved in the traditional fermentation of milk for Nono production, and the presence of transferable AMR determinants. METHODS One hundred (100) LAB isolates from Nono identified in a previous study as Limosilactobacillus fermentum, Lactobacillus delbrueckii, Streptococcus thermophilus, Streptococcus infantarius, Lentilactobacillus senioris, Leuconostoc pseudomesenteriodes, and Enterococcus thailandicus were investigated. The minimum inhibitory concentration (MIC) was determined for 18 antimicrobials using the micro-broth dilution method. In addition, LAB isolates were screened for 28 antimicrobial resistance genes using PCR. The ability of LAB isolates to transfer tetracycline and streptomycin resistance genes to Enterococcus faecalis was also investigated. RESULTS The experiments revealed variable antimicrobial susceptibility according to the LAB isolate and the antimicrobial tested. The tetracycline resistance genes tet(S) and tet(M) were detected in isolates Ent. thailandicus 52 and S. infantarius 10. Additionally, aad(E) encoding resistance to streptomycin was detected in Ent. thailandicus 52. The conjugation experiments suggested that the tet(S) and aad(E) genes were transferable in vitro from isolate Ent. thailandicus 52 to Ent. faecalis JH2-2. SIGNIFICANCE AND IMPACT Traditional fermented foods play a significant role in the diet of millions of people in Africa, yet their contribution to the burden of AMR is largely unknown. This study highlights that LAB involved in traditionally fermented foods could be potential reservoirs of AMR. It also underscores the relevant safety issues of Ent. thailandicus 52 and S. infantarius 10 for use as starter cultures as they carry transferable AMR genes. Starter cultures are an essential aspect of improving the safety and quality attributes of African fermented foods. However, AMR monitoring is an important safety aspect in the selection of starter cultures for improving traditional fermentation technologies.
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Affiliation(s)
- Promiselynda I Obioha
- Microbiology Research Unit, School of Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Amarachukwu Anyogu
- Food Safety and Security, School of Biomedical Sciences, University of West London, St. Marys Road, London W5 5RF, UK
| | - Brigitte Awamaria
- Microbiology Research Unit, School of Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Hamid B Ghoddusi
- Microbiology Research Unit, School of Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
| | - Labia Irene I Ouoba
- Microbiology Research Unit, School of Human Sciences, London Metropolitan University, 166-220 Holloway Road, London N7 8DB, UK
- Independent Senior Research Scientist & Consultant, Ouoba-Consulting, London SW16 2DY, UK
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17
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Uezen JD, Ficoseco CA, Fátima Nader-Macías ME, Vignolo GM. Identification and characterization of potential probiotic lactic acid bacteria isolated from pig feces at various production stages. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2023; 87:127-145. [PMID: 37020571 PMCID: PMC10069149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 12/16/2022] [Indexed: 04/07/2023]
Abstract
Lactic acid bacteria (LAB) were isolated, identified, and characterized from pig feces at various growth stages and feed rations in order to be used as probiotic feed additives. Lactic acid bacteria numbers ranged from 7.10 ± 1.50 to 9.40 log CFUs/g for growing and lactating pigs, respectively. Isolates (n = 230) were identified by (GTG)5-polymerase chain reaction and partial sequence analysis of 16S rRNA. Major LAB populations were Limosilactobacillus reuteri (49.2%), Pediococcus pentosaceus (20%), Lactobacillus amylovorus (11.4%), and L. johnsonii (8.7%). In-vitro assays were performed, including surface characterization and tolerance to acid and bile salts. Several lactobacilli exhibited hydrophobic and aggregative characteristics and were able to withstand gastrointestinal tract conditions. In addition, lactobacilli showed starch- and phytate-degrading ability, as well as antagonistic activity against Gram-negative pathogens and the production of bacteriocin-like inhibitory substances. When resistance or susceptibility to antibiotics was evaluated, high phenotypic resistance to ampicillin, gentamicin, kanamycin, streptomycin, and tetracycline and susceptibility towards clindamycin and chloramphenicol was observed in the assayed LAB. Genotypic characterization showed that 5 out of 15 resistance genes were identified in lactobacilli; their presence did not correlate with phenotypic traits. Genes erm(B), strA, strB, and aadE conferring resistance to erythromycin and streptomycin were reported among all lactobacilli, whereas tet(M) gene was harbored by L. reuteri and L. amylovorus strains. Based on these results, 6 probiotic LAB strains (L. reuteri F207R/G9R/B66R, L. amylovorus G636T/S244T, and L. johnsonii S92R) can be selected to explore their potential as direct feed additives to promote swine health and replace antibiotics.
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Affiliation(s)
- José D Uezen
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Pharmabiotic Department, Batalla de Chacabuco 145 (CP: T4000ILC). San Miguel de Tucumán, Tucumán, Argentina
| | - Cecilia Aristimuño Ficoseco
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Pharmabiotic Department, Batalla de Chacabuco 145 (CP: T4000ILC). San Miguel de Tucumán, Tucumán, Argentina
| | - María E Fátima Nader-Macías
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Pharmabiotic Department, Batalla de Chacabuco 145 (CP: T4000ILC). San Miguel de Tucumán, Tucumán, Argentina
| | - Graciela M Vignolo
- Centro de Referencia para Lactobacilos (CERELA-CONICET), Pharmabiotic Department, Batalla de Chacabuco 145 (CP: T4000ILC). San Miguel de Tucumán, Tucumán, Argentina
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Ma R, Miao N, Zhang Q, Jiang S, Li X, Chi L, Li Y, Mu G, Zhu X. A new attempt to develop fermented milk with low whey protein allergenic potential using a top-down method. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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In Silico Evidence of the Multifunctional Features of Lactiplantibacillus pentosus LPG1, a Natural Fermenting Agent Isolated from Table Olive Biofilms. Foods 2023; 12:foods12050938. [PMID: 36900455 PMCID: PMC10000683 DOI: 10.3390/foods12050938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/16/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
In recent years, there has been a growing interest in obtaining probiotic bacteria from plant origins. This is the case of Lactiplantibacillus pentosus LPG1, a lactic acid bacterial strain isolated from table olive biofilms with proven multifunctional features. In this work, we have sequenced and closed the complete genome of L. pentosus LPG1 using both Illumina and PacBio technologies. Our intention is to carry out a comprehensive bioinformatics analysis and whole-genome annotation for a further complete evaluation of the safety and functionality of this microorganism. The chromosomic genome had a size of 3,619,252 bp, with a GC (Guanine-Citosine) content of 46.34%. L. pentosus LPG1 also had two plasmids, designated as pl1LPG1 and pl2LPG1, with lengths of 72,578 and 8713 bp (base pair), respectively. Genome annotation revealed that the sequenced genome consisted of 3345 coding genes and 89 non-coding sequences (73 tRNA and 16 rRNA genes). Taxonomy was confirmed by Average Nucleotide Identity analysis, which grouped L. pentosus LPG1 with other sequenced L. pentosus genomes. Moreover, the pan-genome analysis showed that L. pentosus LPG1 was closely related to the L. pentosus strains IG8, IG9, IG11, and IG12, all of which were isolated from table olive biofilms. Resistome analysis reported the absence of antibiotic resistance genes, whilst PathogenFinder tool classified the strain as a non-human pathogen. Finally, in silico analysis of L. pentosus LPG1 showed that many of its previously reported technological and probiotic phenotypes corresponded with the presence of functional genes. In light of these results, we can conclude that L. pentosus LPG1 is a safe microorganism and a potential human probiotic with a plant origin and application as a starter culture for vegetable fermentations.
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Li T, Wang Z, Guo J, de la Fuente-Nunez C, Wang J, Han B, Tao H, Liu J, Wang X. Bacterial resistance to antibacterial agents: Mechanisms, control strategies, and implications for global health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 860:160461. [PMID: 36435256 DOI: 10.1016/j.scitotenv.2022.160461] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/19/2022] [Accepted: 11/20/2022] [Indexed: 06/16/2023]
Abstract
The spread of bacterial drug resistance has posed a severe threat to public health globally. Here, we cover bacterial resistance to current antibacterial drugs, including traditional herbal medicines, conventional antibiotics, and antimicrobial peptides. We summarize the influence of bacterial drug resistance on global health and its economic burden while highlighting the resistance mechanisms developed by bacteria. Based on the One Health concept, we propose 4A strategies to combat bacterial resistance, including prudent Application of antibacterial agents, Administration, Assays, and Alternatives to antibiotics. Finally, we identify several opportunities and unsolved questions warranting future exploration for combating bacterial resistance, such as predicting genetic bacterial resistance through the use of more effective techniques, surveying both genetic determinants of bacterial resistance and the transmission dynamics of antibiotic resistance genes (ARGs).
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Affiliation(s)
- Ting Li
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Biotechnology, No. 20, Dongda Street, Fengtai District, Beijing 100071, PR China
| | - Zhenlong Wang
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China
| | - Jianhua Guo
- Australian Centre for Water and Environmental Biotechnology (ACWEB, formerly AWMC), The University of Queensland, St Lucia, Queensland 4072, Australia.
| | - Cesar de la Fuente-Nunez
- Machine Biology Group, Departments of Psychiatry and Microbiology, Institute for Biomedical Informatics, Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States of America; Departments of Bioengineering and Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, PA, United States of America; Penn Institute for Computational Science, University of Pennsylvania, Philadelphia, PA, United States of America.
| | - Jinquan Wang
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China
| | - Bing Han
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China
| | - Hui Tao
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China
| | - Jie Liu
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China
| | - Xiumin Wang
- Institute of Feed Research, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China; Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, PR China.
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Mishra BK, Das S, Nandy SK, Patel M, Hati S. Genomic and probiotic attributes of Lactobacillus strains from rice-based fermented foods of North Eastern India. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:504-516. [PMID: 36712227 PMCID: PMC9873898 DOI: 10.1007/s13197-022-05633-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/08/2022] [Accepted: 10/07/2022] [Indexed: 12/02/2022]
Abstract
The probiotic attributes and genomic profiles of amylase-producing Lactobacillus strains from rice-based fermented foods of Meghalaya in the North-Eastern India were evaluated in the study. A preliminary screening of 17 lactic acid bacteria strains was performed based on their starch hydrolysis and glucoamylase activities. Out of 17 strains, 5 strains (L. fermentum KGL4, L. rhamnosus RNS4, L. fermentum WTS4, L. fermentum KGL2, and L. rhamnosus KGL3A) were selected for further characterization of different probiotic attributes. Whole-genome sequencing of two of the best strains was carried out using a shotgun sequencing platform based on their rich probiotic attributes. The EPS production was in the range of 2.89-3.92 mg/mL. KGL2 (41.5%) and KGL3A (41%) showed the highest antioxidant activity. The highest antibiotic susceptibility was exhibited by all the five Lactobacillus strains against ampicillin, ranging from 24.66 to 27.33 mm. The lactobacilli isolates used in the study could survive the simulated gastric/intestinal juices. Genomic characterization of KGL4 and KGL3A illustrated their possible adherence to the intestinal wall, specialized metabolic patterns, and possible role in boosting host immunity. Supplementary Information The online version contains supplementary material available at 10.1007/s13197-022-05633-8.
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Affiliation(s)
- Birendra K. Mishra
- Department of Rural Development and Agricultural Production, North-Eastern Hill University, Tura Campus, Chasingre, Meghalaya 794002 India
| | - Sujit Das
- Department of Rural Development and Agricultural Production, North-Eastern Hill University, Tura Campus, Chasingre, Meghalaya 794002 India
- Biotechnology Industry Research Assistance Council, New Delhi, Delhi 110003 India
| | - Suman K. Nandy
- BIRAC BioNEST Bioincubator (B3I) Facility, North-Eastern Hill University, Tura Campus, Chasingre, Meghalaya 794002 India
| | - Maulik Patel
- Dairy Microbiology Department, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat 388110 India
| | - Subrota Hati
- Dairy Microbiology Department, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat 388110 India
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22
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Coelho-Rocha ND, de Jesus LCL, Barroso FAL, da Silva TF, Ferreira E, Gonçalves JE, Dos Santos Martins F, de Oliveira Carvalho RD, Barh D, Azevedo VADC. Evaluation of Probiotic Properties of Novel Brazilian Lactiplantibacillus plantarum Strains. Probiotics Antimicrob Proteins 2023; 15:160-174. [PMID: 36028786 DOI: 10.1007/s12602-022-09978-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2022] [Indexed: 01/20/2023]
Abstract
Beneficial effects of Lactiplantibacillus plantarum strains have been widely reported. Knowing that the effects of probiotic bacteria are strain-dependent, this study aimed to characterize the probiotic properties and investigate the gastrointestinal protective effects of nine novel L. plantarum strains isolated from Bahia, Brazil. The probiotic functionality was first evaluated in vitro by characterizing bile salt and acidic tolerance, antibacterial activity, and adhesion to Caco-2 cells. Antibiotic resistance profile, mucin degradation, and hemolytic activity assays were also performed to evaluate safety features. In vivo analyses were conducted to investigate the anti-inflammatory effects of the strains on a mouse model of 5-Fluorouracil-induced mucositis. Our results suggest that the used L. plantarum strains have good tolerance to bile salts and low pH and can inhibit commonly gastrointestinal pathogens. Lp2 and Lpl1 strains also exhibited high adhesion rates to Caco-2 cells (13.64 and 9.05%, respectively). Phenotypical resistance to aminoglycosides, vancomycin, and tetracycline was observed for most strains. No strain showed hemolytic or mucolytic activity. Seven strains had a protective effect against histopathological and inflammatory damage induced by 5-FU. Gene expression analysis of inflammatory markers showed that five strains upregulated interleukin 10 (Il10), while four downregulated both interleukin 6 (Il6) and interleukin 1b (Il1b). Additionally, all strains reduced eosinophilic and neutrophilic infiltration; however, they could not prevent weight loss or reduced liquid/ food intake. Altogether, our study suggests these Brazilian L. plantarum strains present good probiotic characteristics and safety levels for future applications and can be therapeutically adjuvant alternatives to prevent/treat intestinal mucositis.
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Affiliation(s)
- Nina Dias Coelho-Rocha
- Department of Genetics, Ecology, and Evolution, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Luís Cláudio Lima de Jesus
- Department of Genetics, Ecology, and Evolution, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Fernanda Alvarenga Lima Barroso
- Department of Genetics, Ecology, and Evolution, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Tales Fernando da Silva
- Department of Genetics, Ecology, and Evolution, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Enio Ferreira
- Department of General Pathology, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - José Eduardo Gonçalves
- Department of Pharmaceutic Products, Pharmacy Faculty, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Flaviano Dos Santos Martins
- Department of Microbiology, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Rodrigo Dias de Oliveira Carvalho
- Department of Biochemistry and Biophysics, Institute of Health Sciences, Federal University of Bahia, Salvador, Bahia, 40110-909, Brazil
| | - Debmalya Barh
- Institute of Integrative Omics and Applied Biotechnology (IIOAB), West Bengal, Nonakuri, Purba Medinipur, 721172, India
| | - Vasco Ariston de Carvalho Azevedo
- Department of Genetics, Ecology, and Evolution, Biological Sciences Institute, Federal University of Minas Gerais, Minas Gerais, Belo Horizonte, 31270-901, Brazil.
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23
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Zeng H, Liu Y, Huang K, Chen H, Yang B, Wang J. Lactiplantibacillus plantarum A1, C1 and C10 Are Potential Probiotics Isolated from Pineapple Residual Silage. Microorganisms 2022; 11:microorganisms11010029. [PMID: 36677321 PMCID: PMC9861278 DOI: 10.3390/microorganisms11010029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/17/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
The production and consumption of pineapple creates large quantities of residues. Ensiling these residues might help to minimize the waste burden and meet the intensive feed demand for ruminants. Proper lactic acid bacteria (LAB) are not only responsible for pineapple residual silage fermentation, but might also deliver probiotics. The aim of this study was to isolate LAB strains with probiotic functions, and to enhance intestinal antioxidant capacity from naturally fermented pineapple residues. A total of 47 LAB isolates with gram-positive, catalase-negative, nonhemolytic properties were used for probiotic screening. Lactiplantibacillus plantarum (L. plantarum) A1, C1 and C10 were susceptible to rifampicin, gentamicin and erythromycin, did not contain virulence factor-coding genes and showed good tolerance to acid (pH 3.0), 0.5% bile salt and simulated gastric and intestinal fluid. Their hydrophobicity indices were 71.92%, 45.50% and 66.90%, respectively. All of them were able to adhere to bovine jejunum epithelial cells (BJECs) and to antagonize Escherichia coli F5 and Salmonella Dublin. These three LAB strains tolerated hydrogen peroxide and significantly decreased (p < 0.05) reactive oxygen species levels in BJECs. In addition, L. plantarum C1 and C10 significantly increased (p < 0.05) the total antioxidant capacity in BJECs in the presence of 200 μmol/L hydrogen peroxide condition. L. plantarum A1, C1 and C10 are potential probiotics isolated from pineapple residual silage. This study aims to promote pineapple residue’s utilization in the feed industry.
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Affiliation(s)
- Hongbo Zeng
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Yalu Liu
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Kailang Huang
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Hongwei Chen
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Bin Yang
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Jiakun Wang
- Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
- MoE Key Laboratory of Molecular Animal Nutrition, Zhejiang University, Hangzhou 310058, China
- Correspondence:
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24
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Feng S, Wang H, Lin X, Liang H, Zhang S, Chen Y, Ji C. Probiotic properties of Lactobacillus plantarum and application in prebiotic gummies. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Haryani Y, Halid NA, Guat GS, Nor-Khaizura MAR, Hatta MAM, Sabri S, Radu S, Hasan H. High prevalence of multiple antibiotic resistance in fermented food-associated lactic acid bacteria in Malaysia. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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26
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Laconi A, Tolosi R, Mughini-Gras L, Cuccato M, Cannizzo FT, Piccirillo A. Amoxicillin and thiamphenicol treatments may influence the co-selection of resistance genes in the chicken gut microbiota. Sci Rep 2022; 12:20413. [PMID: 36437351 PMCID: PMC9701756 DOI: 10.1038/s41598-022-24927-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to assess the dynamics of microbial communities and antimicrobial resistance genes (ARGs) in the chicken gut following amoxicillin and thiamphenicol treatments and potential co-selection of ARGs. To this purpose, the microbial community composition, using 16S rRNA NGS, and the abundance of ARGs conferring resistance to β-lactams and phenicols, using qPCRs, were determined. Results revealed that the administered antimicrobials did not significantly reduce the gut microbiota diversity, but changed its composition, with taxa (e.g. Gallibacterium and Megamonas) being enriched after treatment and replacing other bacteria (e.g. Streptococcus and Bifidobacterium). Positive correlations were found between ARGs (e.g. cmlA, blaCMY-2, and blaSHV) and the relative abundance of specific taxa (e.g. Lactobacillus and Subdoligranulum). The selective pressure exerted by both amoxicillin and thiamphenicol resulted in an increased abundance of ARGs conferring resistance to β-lactams (e.g. blaTEM-1, blaSHV, and blaCTX-M1-like) and phenicols (e.g. floR and cmlA). These findings, together with the co-occurrence of genes conferring resistance to the two antimicrobial classes (e.g. blaTEM-1 and cmlA), suggest a possible interaction among antimicrobials on resistance emergence, possibly due to the presence of mobile genetic elements (MGEs) carrying multiple resistance determinants.
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Affiliation(s)
- Andrea Laconi
- grid.5608.b0000 0004 1757 3470Department of Comparative Biomedicine and Food Science, University of Padua, 35020 Legnaro, PD Italy
| | - Roberta Tolosi
- grid.5608.b0000 0004 1757 3470Department of Comparative Biomedicine and Food Science, University of Padua, 35020 Legnaro, PD Italy
| | - Lapo Mughini-Gras
- grid.5477.10000000120346234Institute for Risk Assessment Sciences (IRAS), Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands ,grid.31147.300000 0001 2208 0118Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Matteo Cuccato
- grid.7605.40000 0001 2336 6580Department of Veterinary Science, University of Turin, Turin, Italy
| | | | - Alessandra Piccirillo
- grid.5608.b0000 0004 1757 3470Department of Comparative Biomedicine and Food Science, University of Padua, 35020 Legnaro, PD Italy
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27
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Alarming Antibiotic Resistance of Lactobacilli Isolated from Probiotic Preparations and Dietary Supplements. Antibiotics (Basel) 2022; 11:antibiotics11111557. [DOI: 10.3390/antibiotics11111557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/30/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
In this study, we screened eight commercially available brands of Lactobacillus-containing probiotic preparations and dietary supplements for resistance towards commonly administered antibiotics of different classes. According to disc diffusion results, most of the isolates were resistant to vancomycin and susceptible to penicillin-type antibiotics (ampicillin and amoxicillin), carbapenems (imipenem, meropenem, and ertapenem), and inhibitors of protein synthesis (chloramphenicol, erythromycin, tetracycline, clarithromycin, and linezolid). However, based on minimum inhibitory concentration (MIC) values, six strains were reconsidered as resistant to tetracycline. All tested lactobacilli were resistant towards amikacin, ciprofloxacin, and norfloxacin. Resistance to cephalosporins was highly variable and decreased in the following order: ceftazidime/cefepime, ceftriaxone, cefotaxime, cefazolin, and cefoperazone. PCR screening for antibiotic resistance determinants in probiotic lactobacilli revealed a wide occurrence of vancomycin resistance gene vanX, ciprofloxacin resistance gene parC, and extended-spectrum β-lactamase gene blaTEM. We also detected the tetK gene for tetracycline resistance in one isolate. Additionally, we identified discrepancies between the claims of the manufacturers and the identified species composition, as well as the enumerated amount of viable bacteria, for several products. The results of this study raise concerns about the safety of lactobacilli for human consumption as probiotics, as they may act as reservoirs of transferable antibiotic resistance genes.
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28
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Anti-Influenza Virus Potential of Probiotic Strain Lactoplantibacillus plantarum YML015 Isolated from Korean Fermented Vegetable. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8110572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Lactic acid bacteria are one of the potential natural remedies used worldwide, commonly known as probiotics. Here, the aim of this research investigation was to isolate a probiotic Lactobacilli strain, YLM015, from the popular Korean fermented vegetable “Kimchi” and to evaluate its anti-viral potential against influenza virus A (IFVA) H1N1 using the MDCK cell line in vitro, and in embryonated eggs in ovo. The YML015 strain was selected from among the 1200 Lactobacilli isolates for further studies based on its potent anti-viral efficacy. YML015 was identified and characterized as Lactoplantibacillus plantarum YML015 based on the 16S rRNA gene sequencing and biochemically with an API 50 CHL Kit. In ovo assay experienced with embryonated eggs and the hemagglutination inhibition method, as well as cytopathogenic reduction assay, was performed individually to observe anti-influenza viral activity of YML015 against influenza virus A H1N1. Additionally, YML015 was classified for its non-resistance nature as safe for humans and animals as confirmed by the antibiotic susceptibility (MIC) test, cell viability, and hemolysis assay. The heat stability test was also experienced by using different heat-treated cell-free supernatant (CFS) samples of YML015. As a result, YML015 showed highly potent anti-viral activity against influenza virus A H1N1 in vitro in the MDCK cell line. Overall findings suggest that anti-influenza viral activity of L. plantarum YML015 makes it a potential candidate of choice for use as an influential probiotic in pharmacological preparations to protect humans and animals from flu and viral infection.
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29
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You I, Mahiddine FY, Park H, Kim MJ. Lactobacillus acidophilus novel strain, MJCD175, as a potential probiotic for oral health in dogs. Front Vet Sci 2022; 9:946890. [PMID: 36118340 PMCID: PMC9478757 DOI: 10.3389/fvets.2022.946890] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Accepted: 08/09/2022] [Indexed: 11/23/2022] Open
Abstract
The oral cavity is the second-largest habitat for microorganisms, and a well-balanced oral microbiome contributes to preventing dental disorders caused by pathogenic bacteria. Since humans and dogs have different lifestyles and oral microbiome structures, the present study aimed to develop novel probiotics for dogs. A total 53 Lactobacillus spp. were isolated from healthy dogs, and nine isolates were identified as Lactobacillus acidophilus according to 16S rRNA gene sequencing. According to the high antimicrobial activity against the dental caries-causing bacterium Streptococcus mutans, single or three mixed strains were orally administered to dogs for 4 weeks with concentration of 108-109 CFU/day. Intraoral swab samples were collected before and after the administration, and changes of oral pathogen were analyzed using quantitative PCR. Among them, Porphyromonas gingivalis, a critical factor of periodontitis, was significantly reduced in the single-strain administered group. Based on the acid and bile salts tolerance characteristics of isolates, systemic effects were also analyzed by comparing serum immunoglobulin and reproductive ability before and after the administration. However, no significant changes were observed in the serum IgG level and sperm quality. Overall, these in vitro and in vivo results suggest that L. acidophilus isolates from dogs, especially L. acidophilus MJCD175, could be promising probiotic candidates to support oral health without systemic adverse effects in dogs.
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30
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Ke A, Parreira VR, Farber JM, Goodridge L. Selection of a Potential Synbiotic against Cronobacter sakazakii. J Food Prot 2022; 85:1240-1248. [PMID: 35435968 DOI: 10.4315/jfp-22-048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/10/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Cronobacter sakazakii is an opportunistic foodborne pathogen that can be fatal to infants; it is commonly associated with powdered infant formula due to contamination during manufacturing processes or during preparation in hospitals or homes. This project aimed to select a potential synbiotic, a combination of probiotic strains with a prebiotic product, to inhibit the growth of C. sakazakii in an in vitro dynamic infant gut model (Simulator of the Human Intestinal Microbial Ecosystem). A total of 16 lactic acid bacteria (LAB) were tested for their inhibitory properties against four different C. sakazakii strains by a zone of inhibition test. Lactobacillus and Pediococcus species were able to inhibit the growth (>15-mm inhibition zones) of all C. sakazakii strains tested, and only one strain from the two genera exhibited atypical resistance to tetracycline. All C. sakazakii strains and the selected LAB strains, which inhibited C. sakazakii and did not exhibit atypical antibiotic resistance, were grown in Luria-Bertani or de Man Rogosa Sharpe broth, respectively, containing 1% dextrose or 1% commercial prebiotic (w/v) to compare their ability to metabolize the prebiotic product. Overall, based on the growth inhibition of C. sakazakii, antibiotic susceptibility, and prebiotic metabolism, 6 of the 16 LAB were chosen to be part of a potential synbiotic. This study has provided valuable information that will help with the development of a synbiotic that can be used in powdered infant formula to reduce the potential for C. sakazakii-related illnesses in infants. HIGHLIGHTS
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Affiliation(s)
- Alfred Ke
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, Canada N1G 2W1
| | - Valeria R Parreira
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, Canada N1G 2W1
| | - Jeffrey M Farber
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, Canada N1G 2W1
| | - Lawrence Goodridge
- Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, 50 Stone Road East, Guelph, Ontario, Canada N1G 2W1
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31
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Antibiotic resistance and virulence factors in lactobacilli: something to carefully consider. Food Microbiol 2022; 103:103934. [DOI: 10.1016/j.fm.2021.103934] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 10/25/2021] [Accepted: 11/04/2021] [Indexed: 01/06/2023]
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32
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Isolation and identification of lactic acid bacteria in fruit processing residues from the Brazilian Cerrado and its probiotic potential. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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33
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Lv M, Wang S, Yin H, Dong K, Liu Y, Pan H, Lin Q, Cao Z. Probiotic Potential and Effects on Gut Microbiota Composition and Immunity of Indigenous Gut Lactobacilli in Apis cerana. Probiotics Antimicrob Proteins 2022; 14:252-262. [PMID: 35325390 DOI: 10.1007/s12602-022-09935-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/14/2022] [Indexed: 10/18/2022]
Abstract
This study aimed to investigate the probiotic potential of gut indigenous lactic acid bacteria (LAB) originated from Apis cerana. Six Limosilactobacillus reuteri and one Lactobacillus helveticus were isolated from gut samples of A. cerana adult worker bee. All isolates antagonized the growth of pathogens including Salmonella typhimurium, Escherichia coli, Shigella flexneri, and Flavobacterium frigidimaris, and L. helveticus KM7 showed the greatest antimicrobial activity among them. All strains were sensitive to cefotaxime, amoxicillin, cephalothin, penicillin G, kanamycin, and vancomycin, moderately sensitive to novobiocin and resistant to gentamicin. Six out of seven strains were sensitive to ampicillin. L. helveticus KM7 was chosen to evaluate in vivo probiotic effect of adult worker bees of A. cerana through fed sucrose syrup supplemented with KM7. Administration of KM7 increased survival rate and gut LAB but decreased gut fungi and Enterococcus in honeybees. Expressions of genes related to antimicrobial peptides (AMPs) including Abaecin and Defensin were also induced in the gut of honeybees. The results suggested that L. helveticus KM7 with greater probiotic properties could improve the survival rate of adult worker honeybees of A. cerana through regulating gut microbiota and AMPs genes expression.
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Affiliation(s)
- Mingkui Lv
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Sifan Wang
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Huajuan Yin
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Kun Dong
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Yiqiu Liu
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Hongbin Pan
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Qiuye Lin
- College of Food Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China
| | - Zhenhui Cao
- Faculty of Animal Science and Technology, Yunnan Agricultural University, Heilongtan, North Suburb, 650201, People's Republic of China. .,Yunnan Provincial Key Laboratory of Animal Nutrition and Feed Science, Heilongtan, North Suburb, 650201, People's Republic of China.
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34
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Liu C, Xue WJ, Ding H, An C, Ma SJ, Liu Y. Probiotic Potential of Lactobacillus Strains Isolated From Fermented Vegetables in Shaanxi, China. Front Microbiol 2022; 12:774903. [PMID: 35178036 PMCID: PMC8844445 DOI: 10.3389/fmicb.2021.774903] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/13/2021] [Indexed: 12/17/2022] Open
Abstract
The objective of this study was to assess in vitro probiotic potential of Lactobacillus strains derived from artisanal fermented vegetables in Shaanxi, China. In total, 74 acid-producing Gram-positive strains with rod-shaped under the microscope were isolated from 16 samples of spontaneously fermented vegetables. Out of 74 strains, 26 showed high survival rate under low pH and high bile salts conditions and were subjected to molecular identification by 16S rRNA gene sequencing analysis. The results showed that 15 isolates belonged to Lactobacillus plantarum, 9 isolates belonged to Lactobacillus brevis, and the 2 remaining strains belonged to Weissella viridescens. The 24 Lactobacillus strains were investigated for their survival rate to transit simulated gastrointestinal tract, cell surface hydrophobicity, auto-aggregation, co-aggregation with pathogen, adhesion to Caco-2, antimicrobial activity, antibiotics susceptibility, radical scavenging ability, α-glucosidase inhibition, and the cholesterol assimilation. The results showed that the probiotic characteristics were strain-dependent, and several strains exhibited great probiotic potential with specific health benefits, which indicated that they might be excellent candidates for production of functional foods. Interestingly, it was first found that L. plantarum generally had higher antibacterial activities, α-glucosidase inhibition ability, and antibiotics susceptibility compared to L. brevis in this study. The results indicated that Lactobacillus strains isolated from fermented vegetables in Shaanxi, China, could be exploited as a promising novel probiotic source.
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Affiliation(s)
- Chen Liu
- Shaanxi Institute of Microbiology, Xi'an, China
| | | | - Hao Ding
- Shaanxi Institute of Microbiology, Xi'an, China
| | - Chao An
- Shaanxi Institute of Microbiology, Xi'an, China
| | - Sai-Jian Ma
- Shaanxi Institute of Microbiology, Xi'an, China
| | - Yao Liu
- Shaanxi Institute of Microbiology, Xi'an, China
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35
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Nunziata L, Brasca M, Morandi S, Silvetti T. Antibiotic resistance in wild and commercial non-enterococcal Lactic Acid Bacteria and Bifidobacteria strains of dairy origin: An update. Food Microbiol 2022; 104:103999. [DOI: 10.1016/j.fm.2022.103999] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 01/20/2022] [Accepted: 01/28/2022] [Indexed: 12/19/2022]
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36
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Wang Y, Dong J, Wang J, Chi W, Zhou W, Tian Q, Hong Y, Zhou X, Ye H, Tian X, Hu R, Wong A. Assessing the drug resistance profiles of oral probiotic lozenges. J Oral Microbiol 2022; 14:2019992. [PMID: 35024089 PMCID: PMC8745366 DOI: 10.1080/20002297.2021.2019992] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Probiotic lozenges have been developed to harvest the benefits of probiotics for oral health, but their long-term consumption may encourage the transfer of resistance genes from probiotics to commensals, and eventually to disease-causing bacteria. Aim To screen commercial probiotic lozenges for resistance to antibiotics, characterize the resistance determinants, and examine their transferability in vitro. Results Probiotics of all lozenges were resistant to glycopeptide, sulfonamide, and penicillin antibiotics, while some were resistant to aminoglycosides and cephalosporins. High minimum inhibitory concentrations (MICs) were detected for streptomycin (>128 µg/mL) and chloramphenicol (> 512 µg/mL) for all probiotics but only one was resistant to piperacillin (MIC = 32 µg/mL). PCR analysis detected erythromycin (erm(T), ermB or mefA) and fluoroquinolone (parC or gyr(A)) resistance genes in some lozenges although there were no resistant phenotypes. The dfrD, cat-TC, vatE, aadE, vanX, and aph(3")-III or ant(2")-I genes conferring resistance to trimethoprim, chloramphenicol, quinupristin/dalfopristin, vancomycin, and streptomycin, respectively, were detected in resistant probiotics. The rifampicin resistance gene rpoB was also present. We found no conjugal transfer of streptomycin resistance genes in our co-incubation experiments. Conclusion Our study represents the first antibiotic resistance profiling of probiotics from oral lozenges, thus highlighting the health risk especially in the prevailing threat of drug resistance globally.
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Affiliation(s)
- Yi Wang
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, University Town, Wenzhou, Zhejiang Province, China
| | - Jingya Dong
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, University Town, Wenzhou, Zhejiang Province, China
| | - Junyi Wang
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Wei Chi
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Wei Zhou
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Qiwen Tian
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Yue Hong
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, University Town, Wenzhou, Zhejiang Province, China
| | - Xuan Zhou
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Hailv Ye
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
| | - Xuechen Tian
- Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang Province, China.,Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang Province, China
| | - Rongdang Hu
- Department of Orthodontics, School and Hospital of Stomatology, Wenzhou Medical University, University Town, Wenzhou, Zhejiang Province, China
| | - Aloysius Wong
- Department of Biology, College of Science and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China.,Zhejiang Bioinformatics International Science and Technology Cooperation Center, Wenzhou, Zhejiang Province, China.,Wenzhou Municipal Key Lab for Applied Biomedical and Biopharmaceutical Informatics, Wenzhou, Zhejiang Province, China
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37
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Fatahi-Bafghi M, Naseri S, Alizehi A. Genome analysis of probiotic bacteria for antibiotic resistance genes. Antonie van Leeuwenhoek 2022; 115:375-389. [PMID: 34989942 DOI: 10.1007/s10482-021-01703-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 12/21/2021] [Indexed: 12/30/2022]
Abstract
To date, probiotic bacteria are used in the diet and have various clinical applications. There are reports of antibiotic resistance genes in these bacteria that can transfer to other commensal and pathogenic bacteria. The aim of this study was to use whole-genome sequence analysis to identify antibiotic resistance genes in a group of bacterial with probiotic properties. Also, this study followed existing issues about the importance and presence of antibiotic resistance genes in these bacteria and the dangers that may affect human health in the future. In the current study, a collection of 126 complete probiotic bacterial genomes was analyzed for antibiotic resistance genes. The results of the current study showed that there are various resistance genes in these bacteria that some of them are transferable to other bacteria. The tet(W) tetracycline resistance gene was more than other antibiotic resistance genes in these bacteria and this gene was found in Bifidobacterium and Lactobacillus. In our study, the most numbers of antibiotic resistance genes were transferred with mobile genetic elements. We propose that probiotic companies before the use of a micro-organism as a probiotic, perform an antibiotic susceptibility testing for a large number of antibiotics. Also, they perform analysis of complete genome sequence for prediction of antibiotic resistance genes.
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Affiliation(s)
- Mehdi Fatahi-Bafghi
- Department of Microbiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. .,Zoonotic Diseases Research Center, Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Sara Naseri
- Zoonotic Diseases Research Center, Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Alizehi
- International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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38
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PETROVIĆ TŽ, ILIĆ P, GRUJOVIĆ M, MLADENOVIĆ K, KOCIĆ-TANACKOV S, ČOMIĆ L. Lactobacillus curvatus from fermented sausages as new probiotic functional foods. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.17121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Predrag ILIĆ
- College of Agriculture and Food Technology, Serbia
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39
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Dobreva L, Koprinarova M, Bratchkova A, Danova S. Antibiotic susceptibility of Lactobacillus plantarum strains, isolated from katak. BULGARIAN JOURNAL OF VETERINARY MEDICINE 2022. [DOI: 10.15547/bjvm.2020-0072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Several Lactobacillus species are accepted as microorganisms with Qualified Presumption of Safety (QPS) in the EFSA’s list. One of them, Lactobacillus plantarum is a widely distributed species with a proven probiotic potential and technological relevance. In addition, every strain must complete several requirements, before implementation. Antibiotic susceptibility is one of EFSA’s important criteria regarding the safety of probiotics. The reason is to avoid any possibility of antibiotic resistance genes transfer to opportunistic pathogens in the gut. In the present study 14 Lactobacillus plantarum strains were assessed for susceptibility to 21 antibiotics from different groups. A high number of resistant strains was determined toward 12 antibiotics (penicillins – penicillin, piperacillin; IIIth generation cephalosporins – cefotaxime, ceftriaxone, ceftazidime; glycopeptides – vancomycin; tetracyclines – tetracycline; aminoglycosides – gentamicin; macrolides – clarithromycin; quinolones – nalidixic acid, ciprofloxacin, levofloxacin). Concerning the other tested antibiotics, strain-specific antibiotic-sensitivity patterns were observed. Antibiotic resistance was also discussed as an advantage in the selection of probiotic strains, however only when it is not transferable. Estimated susceptibility patterns of some of tested candidate probiotic strains are also important, considering the use of the latter as agents accompanying antibiotic therapy
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Affiliation(s)
- L. Dobreva
- Department of General Microbiology, The Stephan Angeloff Institute of Microbiolo-gy, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - M. Koprinarova
- Institute of Molecular Biology “Acad. Roumen Tsanev”, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - A. Bratchkova
- Department of General Microbiology, The Stephan Angeloff Institute of Microbiolo-gy, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - S. Danova
- Department of General Microbiology, The Stephan Angeloff Institute of Microbiolo-gy, Bulgarian Academy of Sciences, Sofia, Bulgaria
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40
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Jasiak K, Amund D. Are spontaneously fermented plant‐based foods potential sources of transferable antibiotic resistance genes? FOOD FRONTIERS 2021. [DOI: 10.1002/fft2.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
- Kinga Jasiak
- School of Life Sciences, Faculty of Health and Life Sciences Coventry University Coventry UK
| | - Daniel Amund
- School of Life Sciences, Faculty of Health and Life Sciences Coventry University Coventry UK
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41
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Kwon YJ, Chun BH, Jung HS, Chu J, Joung H, Park SY, Kim BK, Jeon CO. Safety Assessment of Lactiplantibacillus (formerly Lactobacillus) plantarum Q180. J Microbiol Biotechnol 2021; 31:1420-1429. [PMID: 34373437 PMCID: PMC9705903 DOI: 10.4014/jmb.2106.06066] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/03/2021] [Accepted: 08/09/2021] [Indexed: 12/15/2022]
Abstract
The safety of the probiotic strain Q180, which exerts postprandial lipid-lowering effects, was bioinformatically and phenotypically evaluated. The genome of strain Q180 was completely sequenced, and single circular chromosome of 3,197,263 bp without any plasmid was generated. Phylogenetic and related analyses using16S rRNA gene and whole-genome sequences revealed that strain Q180 is a member of Lactiplantibacillus (Lp., formerly Lactobacillus) plantarum. Antimicrobial resistance (AMR) genes were bioinformatically analyzed using all Lp. plantarum genomes available in GenBank, which showed that AMR genes are present differently depending on Lp. plantarum strains. Bioinformatic analysis demonstrated that some mobile genetic elements such as prophages and insertion sequences were identified in the genome of strain Q180, but because they did not contain harmful genes such as AMR genes and virulence factor (VF)- and toxin-related genes, it was suggested that there is no transferability of harmful genes. The minimum inhibition concentrations of seven tested antibiotics suggested by the European Food Safety Authority guidelines were slightly lower than or equal to the microbiological cut-off values for Lp. plantarum. Strain Q180 did not show hemolytic and gelatinase activities and biogenic amine-producing ability. Taken together, this study demonstrated the safety of strain Q180 in terms of absence of AMR genes and VF- and toxin-related genes as a probiotic strain.
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Affiliation(s)
- Yoo Jin Kwon
- Probiotics Research Laboratory, Chong Kun Dang Bio Research Institute (CKDBIO), Gyeonggi 15064, Republic of Korea
| | - Byung Hee Chun
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Hye Su Jung
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Jaeryang Chu
- Probiotics Research Laboratory, Chong Kun Dang Bio Research Institute (CKDBIO), Gyeonggi 15064, Republic of Korea
| | - Hyunchae Joung
- Probiotics Research Laboratory, Chong Kun Dang Bio Research Institute (CKDBIO), Gyeonggi 15064, Republic of Korea
| | - Sung Yurb Park
- Probiotics Research Laboratory, Chong Kun Dang Bio Research Institute (CKDBIO), Gyeonggi 15064, Republic of Korea
| | - Byoung Kook Kim
- Probiotics Research Laboratory, Chong Kun Dang Bio Research Institute (CKDBIO), Gyeonggi 15064, Republic of Korea
| | - Che Ok Jeon
- Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea,Corresponding author Phone: +82-2-820-5864 E-mail:
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42
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Stępień-Pyśniak D, Hauschild T, Dec M, Marek A, Brzeski M, Kosikowska U. Antimicrobial resistance and genetic diversity of Enterococcus faecalis from yolk sac infections in broiler chicks. Poult Sci 2021; 100:101491. [PMID: 34695638 PMCID: PMC8554262 DOI: 10.1016/j.psj.2021.101491] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/03/2021] [Accepted: 09/09/2021] [Indexed: 12/03/2022] Open
Abstract
Despite restrictions on the use of antibiotics in poultry, the percentage of multidrug resistant bacteria, isolated from both adult birds and chicks, remains high. These bacteria can spread between countries via hatching eggs or chicks. Antibiotic resistant bacteria can also pose a threat to hatchery and farm workers or to consumers of poultry. The aim of the study was to perform a phenotypic and genotypic analysis of the drug resistance of E. faecalis isolates from yolk sac infections in broiler chicks from Poland and the Netherlands and to determine their genetic diversity. The tests revealed resistance to antibiotics from category D, that is, tetracycline (69.7%); category C – lincomycin (98.7%), erythromycin (51.3%), aminoglycosides (high-level streptomycin and kanamycin resistance – 10.5% and 3.95%, respectively), and chloramphenicol (7.9%); and category B – ciprofloxacin (25% with resistance or intermediate resistance). No resistance to penicillin, ampicillin, high-level gentamicin, tigecycline, or linezolid was noted. Various combinations of the erm(B), tet(M), tet(L), tet(O), ant(6)-Ia, aph(3′)-IIIa, ant(4′)-Ia, cat, and msr(A/B) genes were detected in all isolates (irrespective of the drug-resistance phenotype). Among isolates that carried the tet(M) and/or the tet(L) gene, 28% also had the Int-Tn gene, in contrast with isolates possessing tet(O). There were 28 sequence types and 43 PFGE restriction patterns. About 60% of isolates were of sequences types ST59, ST16, ST116, ST282, ST36, and ST82. Nine new sequence types were shown (ST836-ST844). In conclusion, broiler chicks can be a source of drug-resistant sequence types of E. faecalis that are potentially hazardous for people and animals. Restrictive programs for antibiotic use in broiler breeding flocks should be developed to decrease drug resistance in day-old chicks and reduce economic losses during rearing.
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Affiliation(s)
- Dagmara Stępień-Pyśniak
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, 20-612 Poland.
| | - Tomasz Hauschild
- Department of Microbiology and Biotechnology, Faculty of Biology, University of Bialystok, Białystok, 15-245 Poland
| | - Marta Dec
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, 20-612 Poland
| | - Agnieszka Marek
- Department of Veterinary Prevention and Avian Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Lublin, 20-612 Poland
| | - Michał Brzeski
- Veterinary Cabinet - Brzeski and partners, Giżycko, 11-500 Poland
| | - Urszula Kosikowska
- Department of Pharmaceutical Microbiology, Medical University in Lublin, Lublin, 20-093 Poland
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Akpinar A, Yerlikaya O. Some potential beneficial properties of
Lacticaseibacillus paracasei
subsp.
paracasei
and
Leuconostoc mesenteroides
strains originating from raw milk and kefir grains. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15986] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Asli Akpinar
- Faculty of Engineering Department of Food Engineering Manisa Celal Bayar University Manisa Turkey
| | - Oktay Yerlikaya
- Faculty of Agriculture Department of Dairy Technology Ege University Izmir Turkey
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44
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Ahmed S, Ashraf F, Tariq M, Zaidi A. Aggrandizement of fermented cucumber through the action of autochthonous probiotic cum starter strains of Lactiplantibacillus plantarum and Pediococcus pentosaceus. ANN MICROBIOL 2021; 71:33. [PMID: 34483789 PMCID: PMC8406656 DOI: 10.1186/s13213-021-01645-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 08/02/2021] [Indexed: 11/13/2022] Open
Abstract
Purpose Cucumber fermentation is traditionally done using lactic acid bacteria. The involvement of probiotic cultures in food fermentation guarantees enhanced organoleptic properties and protects food from spoilage. Methods Autochthonous lactic acid bacteria were isolated from spontaneously fermented cucumber and identified to species level. Only strains adjudged as safe for human consumption were examined for their technological and functional characteristics. Strain efficiency was based on maintaining high numbers of viable cells during simulated GIT conditions and fermentation, significant antioxidant activity, EPS production, nitrite degradation, and antimicrobial ability against Gram-positive and Gram-negative foodborne pathogens. Result Two strains, Lactiplantibacillus plantarum NPL 1258 and Pediococcus pentosaceus NPL 1264, showing a suite of promising functional and technological attributes, were selected as a mixed-species starter for carrying out a controlled lactic acid fermentations of a native cucumber variety. This consortium showed a faster lactic acid-based acidification with more viable cells, at 4% NaCl and 0.2% inulin (w/v) relative to its constituent strains when tested individually. Sensory evaluation rated the lactofermented cucumber acceptable based on texture, taste, aroma, and aftertaste. Conclusion The results suggest that the autochthonous LAB starter cultures can shorten the fermentation cycle and reduce pathogenic organism’ population, thus improving the shelf life and quality of fermented cucumber. The development of these new industrial starters would increase the competitiveness of production and open the country’s frontiers in the fermented vegetable market.
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Affiliation(s)
- Sadia Ahmed
- National Probiotic Laboratory, National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Faisalabad, 38000 Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650 Pakistan
| | - Fatima Ashraf
- National Probiotic Laboratory, National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Faisalabad, 38000 Pakistan
| | - Muhammad Tariq
- National Probiotic Laboratory, National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Faisalabad, 38000 Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650 Pakistan
| | - Arsalan Zaidi
- National Probiotic Laboratory, National Institute for Biotechnology and Genetic Engineering College (NIBGE-C), Faisalabad, 38000 Pakistan.,Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad, 45650 Pakistan
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45
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Li M, Tang Y, Guo L, Lei T, Deng Y, Wang L, Zhang Q, Li C. Antibiotic Resistance Characterization of Bacteria Isolated from Traditional Chinese Paocai. Curr Microbiol 2021; 78:3853-3862. [PMID: 34390373 DOI: 10.1007/s00284-021-02629-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 08/02/2021] [Indexed: 11/27/2022]
Abstract
In this work, the antibiotic resistance of 218 isolates to 9 different antibiotics was analyzed with minimum inhibitory concentration method. All Lactobacillus pentosus strains were found to be resistant to streptomycin sulfate and ciprofloxacin hydrochloride. Lactococcus lactis strains were resistant to streptomycin sulfate. Specifically, 90% Klebsiella oxytoca and all Citrobacter freundii strains were resistant to ampicillin sodium. 30% K. oxytoca strains were resistant to ciprofloxacin hydrochloride. All Bacillus albus strains were resistant to erythromycin and 80% strains were resistant to ampicillin sodium. Results from PCR analysis revealed that 90 isolates carried the aadE gene. The tetM gene was detected in four L. pentosus isolates. And the streptomycin resistant gene aadA was detected in one L. pentosus isolate. Metagenome analysis revealed that 74.7% genes associated with antibiotic resistance were antibiotic resistance genes. The tetM and aadA genes, detected in PCR analysis, were also retrieved from the paocai metagenome. In brief, this study generated the antibiotic resistance profile of some paocai-originated bacteria strains. L. pentosus found in the final edible paocai were inherently resistant to antibiotics, such as streptomycin and ciprofloxacin. Results in this work reminds us to carefully choose the LAB strains for traditional Chinese paocai production to avoid potential spreading of antibiotic resistant genes.
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Affiliation(s)
- Mei Li
- Meishan Product Quality Supervision and Inspection Institute, Meishan, 620000, China
- National Pickle Quality Inspection Center, Meishan, 620000, China
| | - Yao Tang
- Sichuan Dongpo Chinese Paocai Industrial Technology Research Institute, Meishan, 620000, China
| | - Liyan Guo
- Meishan Product Quality Supervision and Inspection Institute, Meishan, 620000, China
- National Pickle Quality Inspection Center, Meishan, 620000, China
| | - Tao Lei
- Meishan Product Quality Supervision and Inspection Institute, Meishan, 620000, China
- National Pickle Quality Inspection Center, Meishan, 620000, China
| | - Yunfei Deng
- School of Life Science and Food Engineering, Yibin University, Yibin, 644007, China
| | - Liang Wang
- Sichuan Yingshan Vocational Senior High School, Nanchong, 637000, China
| | - Qisheng Zhang
- Sichuan Dongpo Chinese Paocai Industrial Technology Research Institute, Meishan, 620000, China
| | - Chengkang Li
- Meishan Product Quality Supervision and Inspection Institute, Meishan, 620000, China.
- National Pickle Quality Inspection Center, Meishan, 620000, China.
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46
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Mota-Gutierrez J, Cocolin L. Current trends and applications of plant origin lactobacilli in the promotion of sustainable food systems. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.05.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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47
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Arellano K, Vazquez J, Park H, Lim J, Ji Y, Kang HJ, Cho D, Jeong HW, Holzapfel WH. Safety Evaluation and Whole-Genome Annotation of Lactobacillus plantarum Strains from Different Sources with Special Focus on Isolates from Green Tea. Probiotics Antimicrob Proteins 2021; 12:1057-1070. [PMID: 31786735 DOI: 10.1007/s12602-019-09620-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Lactobacillus plantarum shows high intraspecies diversity species, and has one of the largest genome sizes among the lactobacilli. It is adapted to diverse environments and provides a promising potential for various applications. The aim of the study was to investigate the safety and probiotic properties of 18 L. plantarum strains isolated from fermented food products, green tea, and insects. For preliminary safety evaluation the L. plantarum strains were tested for their ability to produce hemolysin and biogenic amines and for their antibiotic resistance. Based on preliminary safety screening, four strains isolated from green tea showed antibiotic resistance below the cut-off MIC values suggested by EFSA, and were selected out of the 18 strains for more detailed studies. Initial selection of strains with putative probiotic potential was determined by their capacity to survive in the human GIT using an in vitro simulation model, and for their adhesion to human Caco-2/TC-7 cell line. Under simulated GIT conditions, all four L. plantarum strains isolated from green tea showed higher survival rates than the control (L. plantarum subsp. plantarum ATCC 14917). All studied strains were genetically identified by 16S rRNA gene sequencing and confirmed to be L. plantarum. In addition, whole-genome sequence analysis of L. plantarum strains APsulloc 331261 and APsulloc 331263 from green tea was performed, and the outcome was compared with the genome of L. plantarum strain WCFS1. The genome was also annotated, and genes related to virulence factors were searched for. The results suggest that L. plantarum strains APsulloc 331261 and APsulloc 331263 can be considered as potential beneficial strains for human and animal applications.
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Affiliation(s)
- Karina Arellano
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Jorge Vazquez
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Haryung Park
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Juhwan Lim
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Yosep Ji
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
- Holzapfel Effective Microbes Inc, Iui-dong 1286, Suwon-si, Gyeonggi-do, 31286, South Korea
| | - Hye-Ji Kang
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea
| | - Donghyun Cho
- Vital Beautie Research Division, Amorepacific R&D Center, Yonggin-si, Gyeonggi-do, 17074, South Korea
| | - Hyun Woo Jeong
- Vital Beautie Research Division, Amorepacific R&D Center, Yonggin-si, Gyeonggi-do, 17074, South Korea
| | - Wilhelm Heinrich Holzapfel
- Advanced Green Energy and Environment Institute (AGEE), Handong Global University, Handong-ro 558, Pohang-si, Gyungbuk, 37554, South Korea.
- Holzapfel Effective Microbes Inc, Iui-dong 1286, Suwon-si, Gyeonggi-do, 31286, South Korea.
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48
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Cisneros L, Cattelan N, Villalba MI, Rodriguez C, Serra DO, Yantorno O, Fadda S. Lactic acid bacteria biofilms and their ability to mitigate Escherichia coli O157:H7 surface colonization. Lett Appl Microbiol 2021; 73:247-256. [PMID: 34008189 DOI: 10.1111/lam.13509] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/14/2021] [Accepted: 05/07/2021] [Indexed: 11/29/2022]
Abstract
Lactic acid bacteria (LAB) exert antagonistic activities against diverse microorganisms, including pathogens. In this work, we aimed to investigate the ability of LAB strains isolated from food to produce biofilms and to inhibit growth and surface colonization of Enterohaemorrhagic Escherichia coli (EHEC) O157:H7 at 10°C. The ability of 100 isolated LAB to inhibit EHEC O157:H7 NCTC12900 growth was evaluated in agar diffusion assays. Thirty-seven LAB strains showed strong growth inhibitory effect on EHEC. The highest inhibitory activities corresponded to LAB strains belonging to Lactiplantibacillus plantarum, Pediococcus acidilactici and Pediococcus pentosaceus species. Eighteen out of the 37 strains that showed growth inhibitory effects on EHEC also had the ability to form biofilms on polystyrene surfaces at 10°C and 30°C. Pre-established biofilms on polystyrene of four of these LAB strains were able to reduce significantly surface colonization by EHEC at low temperature (10°C). Among these four strains, Lact. plantarum CRL 1075 not only inhibited EHEC but also was able to grow in the presence of the enteric pathogen. Therefore, this strain proved to be a good candidate for further technological studies oriented to its application in food-processing environments to mitigate undesirable surface contaminations of E. coli.
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Affiliation(s)
- L Cisneros
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Tucumán, Argentina
| | - N Cattelan
- Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI-CONICET), Facultad de Ciencias Exactas, UNLP, Buenos Aires, Argentina.,Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - M I Villalba
- Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI-CONICET), Facultad de Ciencias Exactas, UNLP, Buenos Aires, Argentina
| | - C Rodriguez
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Tucumán, Argentina
| | - D O Serra
- Instituto de Biología Molecular y Celular de Rosario (IBR, CONICET, UNR), Predio CONICET Rosario, Ocampo y Esmeralda (2000), Rosario, Argentina
| | - O Yantorno
- Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI-CONICET), Facultad de Ciencias Exactas, UNLP, Buenos Aires, Argentina
| | - S Fadda
- Centro de Referencia para Lactobacilos (CERELA), CONICET, Tucumán, Argentina
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49
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Guan Y, Cui Y, Qu X, Jing K. Safety and robustness aspects analysis of Lactobacillus delbrueckii ssp. bulgaricus LDB-C1 based on the genome analysis and biological tests. Arch Microbiol 2021; 203:3955-3964. [PMID: 34021387 DOI: 10.1007/s00203-021-02383-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 04/21/2021] [Accepted: 05/12/2021] [Indexed: 12/26/2022]
Abstract
Lactobacillus delbrueckii subsp. bulgaricus (L. bulgaricus) is a microaerophylic anaerobe, which is widely used in the production of yogurt, cheese, and other fermented dairy products. L. bulgaricus and its partner Streptococcus thermophilus were used as starter cultures of yogurt in the world for thousands of years. In our previous study, L. bulgaricus LDB-C1 was obtained from traditional fermented milk, and possessed some characteristics like high exopolysaccharide yield and good fermentation performance. The analysis of its CRISPR-Cas system, antibiotic resistance, virulence factors, and mobile elements, was performed to reveal the stability of the strain LDB-C1. It was found that LDB-C1 contains a plenty of spacers in the CRISPR region, indicating it might have better performance against the infection of phages and plasmids. Furthermore, the acquired or transmittable antibiotic resistance/virulence factor genes were absent in the tested L. bulgaricus strain LDB-C1.
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Affiliation(s)
- Yuxuan Guan
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
| | - Yanhua Cui
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150090, People's Republic of China.
| | - Xiaojun Qu
- Institute of Microbiology, Heilongjiang Academy of Sciences, Harbin, 150010, People's Republic of China
| | - Kai Jing
- Department of Food Science and Engineering, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150090, People's Republic of China
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50
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Widyastuti Y, Febrisiantosa A, Tidona F. Health-Promoting Properties of Lactobacilli in Fermented Dairy Products. Front Microbiol 2021; 12:673890. [PMID: 34093496 PMCID: PMC8175972 DOI: 10.3389/fmicb.2021.673890] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 04/21/2021] [Indexed: 01/14/2023] Open
Abstract
Bacteria of the genus Lactobacillus have been employed in food fermentation for decades. Fermented dairy products, such as cheese and yogurt, are products of high value known as functional food and widely consumed due to their positive health impact. Fermentation was originally based on conversion of carbohydrate into organic acids, mostly lactic acid, intended to preserve nutrient in milk, but then it develops in other disclosure of capabilities associates with health benefit. It is expected that during the manufacture of fermented dairy products, some bioactive peptides from milk protein are released through proteolysis. Lactobacilli have been recognized and received increasing attention as probiotics by balancing gut microbial population. Information of molecular mechanisms of genome sequence focusing on the microbial that normally inhabit gut may explain as to how these bacteria positively give impact on improving host health. Recent post-biotics concept revealed that health benefit can also be associated after bacterial lysis. This mini review focuses on the contribution of lactobacilli in dairy fermentation with health-promoting properties on human health.
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Affiliation(s)
- Yantyati Widyastuti
- Research Center for Biotechnology, Indonesian Institute of Sciences (LIPI), Cibinong, Indonesia
| | - Andi Febrisiantosa
- Research Division for Natural Product Technology, Indonesian Institute of Sciences (LIPI), Yogyakarta, Indonesia
| | - Flavio Tidona
- Council for Agricultural Research and Economics-Research Center for Animal Production and Aquaculture (CREA-ZA), Lodi, Italy
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