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Suleman M, Yaseen AR, Ahmed S, Khan Z, Irshad A, Pervaiz A, Rahman HH, Azhar M. Pyocins and Beyond: Exploring the World of Bacteriocins in Pseudomonas aeruginosa. Probiotics Antimicrob Proteins 2024:10.1007/s12602-024-10322-3. [PMID: 39023701 DOI: 10.1007/s12602-024-10322-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/08/2024] [Indexed: 07/20/2024]
Abstract
Pseudomonas aeruginosa significantly induces health-associated infections in a variety of species other than humans. Over the years, the opportunistic pathogen has developed resistance against commonly used antibiotics. Since most P. aeruginosa strains are multi-drug resistant, regular antibiotic treatment of its infections is becoming a dire concern, shifting the global focus towards the development of alternate antimicrobial approaches. Pyocins are one of the most diverse antimicrobial peptide combinations produced by bacteria. They have potent antimicrobial properties, mainly against bacteria from the same phylogenetic group. P. aeruginosa, whether from clinical or environmental origins, produce several different pyocins that show inhibitory activity against other multi-drug-resistant strains of P. aeruginosa. They are, therefore, good candidates for alternate therapeutic antimicrobials because they have a unique mode of action that kills antibiotic-resistant bacteria by attacking their biofilms. Here, we review pseudomonas-derived antimicrobial pyocins with great therapeutic potential against multi-drug-resistant P. aeruginosa.
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Affiliation(s)
- Muhammad Suleman
- School of Biological Sciences, Faculty of Life Sciences, University of the Punjab, Lahore, 54590, Pakistan.
| | - Allah Rakha Yaseen
- School of Biological Sciences, Faculty of Life Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Shahbaz Ahmed
- School of Biological Sciences, Faculty of Life Sciences, University of the Punjab, Lahore, 54590, Pakistan
| | - Zoha Khan
- School of Biochemistry and Biotechnology, University of the Punjab, Lahore, 54590, Pakistan
| | - Asma Irshad
- School of Biochemistry and Biotechnology, University of the Punjab, Lahore, 54590, Pakistan
| | - Afsah Pervaiz
- Institute of Microbiology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Hafiza Hiba Rahman
- Department of Pathology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muteeba Azhar
- School of Biochemistry and Biotechnology, University of the Punjab, Lahore, 54590, Pakistan
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Johny LC, Kumar BSG, Rao SJA, Suresh PV. Anti-listerial peptides from a marine Bacillus velezensis FTL7: production optimization, characterizations and molecular docking studies. 3 Biotech 2024; 14:105. [PMID: 38464616 PMCID: PMC10923759 DOI: 10.1007/s13205-024-03944-5] [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: 03/14/2023] [Accepted: 01/28/2024] [Indexed: 03/12/2024] Open
Abstract
Antimicrobial peptides (AMPs) with potent anti-listerial activity were characterized from a novel marine Bacillus velezensis FTL7. A Box-Behnken statistical experimental design was used to study the combined impact of culture conditions on the production of AMPs by B. velezensis FTL7. The conditions optimized by statistical experimental design were 34.5 °C incubation temperature, 23 h incubation time, and 7.6 initial pH of the medium. AMP purification was performed by ammonium sulphate fractionation and butanol extraction followed by reversed-phase C18 solid-phase extraction. Tricine-SDS-PAGE analysis revealed a peptide with a molecular mass of ~ 6.5 kDa in an active AMPs fraction, whereas the mass spectrometry (MS) analysis showed the presence of AMPs in the mass range of 1-1.6 kDa, along with a 6.5 kDa peptide. Both MS and MS/MS analysis confirmed the AMPs as lipopeptides including surfactin, fengycins and iturin A and a circular bacteriocin amylocyclicin. The minimum inhibitory concentration of these AMPs against L. monocytogenes Scott A was 2.5 µg/mL. Further, the in-silico docking studies showed that the AMPs from B. velezensis FTL7 have high binding energy and stable binding patterns towards L. monocytogenes target proteins. Thus, this new combination of AMPs can serve as an effective food bio-preservative. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03944-5.
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Affiliation(s)
- Lidiya C. Johny
- Meat and Marine Sciences Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
| | - B. S. Gnanesh Kumar
- Department of Biochemistry, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
| | - S. J. Aditya Rao
- Plant Cell Biotechnology Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Kimberlite Chemicals India Pvt. Ltd, KIADB III Phase, Doddaballapur, Bangalore, 561203 India
| | - P. V. Suresh
- Meat and Marine Sciences Department, CSIR-Central Food Technological Research Institute, Mysore, 570020 India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002 India
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Chandrika K, Sachan A. Enhanced production of bacteriocin by Bacillus subtilis ZY05. 3 Biotech 2024; 14:37. [PMID: 38221991 PMCID: PMC10786764 DOI: 10.1007/s13205-023-03883-7] [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: 07/28/2023] [Accepted: 12/07/2023] [Indexed: 01/16/2024] Open
Abstract
Bacteriocin-producing strains were isolated from the soil of the rice field, screened out using an agar-well diffusion assay against six indicator bacterial strains, and the highest among them was selected for further investigation. The study focuses on how different growing conditions affect bacteriocin production. One-parameter-at-a-time (OPAT) and a central composite design of response surface methodology (RSM) were used to perform the optimization in two steps. In the OPAT trials, bacteriocin synthesis was elevated by 29%, 45%, and 34%, by employing sucrose as a carbon source and changing the NaCl concentration and pH at 7, respectively. To determine the linear, squared, and interaction correlations among the process variables to predict the ideal conditions for production, a four-factor central composite design (CCD) of RSM was used. It was determined that the analysis of variance (ANOVA), which produces a recognized model using RSM, is sufficient to describe bacteriocin production regarding activity (R2 = 0.9606). The ideal conditions for increased production were 1.51% sucrose concentration, 1.59% NaCl concentration, pH 6.35, and 28.66 (about 29) hours of incubation. The value predicted by RSM (4051.55 AU/mL) was approximately two times greater than the value of a non-optimized medium. The experimental value of 4403.85 AU/mL was closer to the expected value. According to the data, increasing bacteriocin activity required employing the ideal sucrose concentration, NaCl concentration, and incubation time. The partially purified bacteriocin was found stable at temperatures between 24 and 50 °C and at pH 5-8. The molecular weight purified bacteriocin was determined to be between 13 and 35 kDa.
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Affiliation(s)
- Kumari Chandrika
- Department of Life Sciences, Central University of Jharkhand, Ranchi, Jharkhand 835 222 India
| | - Ashish Sachan
- Department of Life Sciences, Central University of Jharkhand, Ranchi, Jharkhand 835 222 India
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Mlambo LK, Abbasiliasi S, Tang HW, Ng ZJ, Parumasivam T, Hanafiah KM, Al-Shammary AAK, Tan JS. Bioactive Metabolites of Lactiplantibacillus plantarum K014 Against Methicillin-Resistant Staphylococcus aureus ATCC43300 and In Vitro Evaluation of Its Antibacterial, Antioxidant and Anti-inflammatory Activities. Curr Microbiol 2022; 79:359. [PMID: 36251092 DOI: 10.1007/s00284-022-03038-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 09/09/2022] [Indexed: 11/24/2022]
Abstract
This study aims to evaluate the effects of bioactive metabolites produced by lactic acid bacteria against methicillin-resistant Staphylococcus aureus (MRSA) ATCC 43300. A total of six lactic acid bacteria (LAB) were selected to evaluate the antimicrobial activity against MRSA ATCC 43300, a skin pathogen that is highly resistant to most antibiotics. The K014 isolate from a fermented vegetable recorded the highest inhibition against MRSA ATCC 43300 at 91.93 ± 0.36%. 16S rRNA sequencing revealed the K014 isolate is closely related to L. plantarum and the sequence was subsequently deposited in the GenBank database with an accession number of MW180960, named as Lactiplantibacillus plantarum K014. The cell-free supernatant (CFS) of L. plantarum K014 had tolerance to high temperature as well as acidic pH. The bioactive metabolites, such as hydrogen peroxide, lactic acid and hyaluronic acid, were produced by L. plantarum K014. Result from ABTS assay showed higher antioxidant activity (46.28%) as compared to that obtained by DPPH assay (2.97%). The CFS had showed anti-inflammatory activity for lipoxygenase (LOX) assay at 43.66%. The bioactive metabolites of L. plantarum K014 showed very promising potential to be used topical skin pathogens.
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Affiliation(s)
- Larry Kurai Mlambo
- Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia
| | - Sahar Abbasiliasi
- Halal Products Research Institute, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia
| | - Hock Wei Tang
- Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia
| | - Zhang Jin Ng
- Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia
| | - Thaigarajan Parumasivam
- School of Pharmaceutical Sciences, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia
| | | | | | - Joo Shun Tan
- Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden, Pulau Pinang, Malaysia.
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Zhao J, Zhou Z, Bai X, Zhang D, Zhang L, Wang J, Wu B, Zhu J, Yang Z. A novel of new class II bacteriocin from Bacillus velezensis HN-Q-8 and its antibacterial activity on Streptomyces scabies. Front Microbiol 2022; 13:943232. [PMID: 35966655 PMCID: PMC9372549 DOI: 10.3389/fmicb.2022.943232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/28/2022] [Indexed: 11/23/2022] Open
Abstract
Potato common scab is a main soil-borne disease of potato that can significantly reduce its quality. At present, it is still a challenge to control potato common scab in the field. To address this problem, the 972 family lactococcin (Lcn972) was screened from Bacillus velezensis HN-Q-8 in this study, and an Escherichia coli overexpression system was used to obtain Lcn972, which showed a significant inhibitory effect on Streptomyces scabies, with a minimum inhibitory concentration of 10.58 μg/mL. The stability test showed that Lcn972 is stable against UV radiation and high temperature. In addition, long-term storage at room temperature and 4°C had limited effects on its activity level. The antibacterial activity of Lcn972 was enhanced by Cu2+ and Ca2+, but decreased by protease K. The protein was completely inactivated by Fe2+. Cell membrane staining showed that Lcn972 damaged the cell membrane integrity of S. scabies. Scanning electron microscope (SEM) and transmission electron microscope (TEM) observations revealed that the hyphae of S. scabies treated with Lcn972 were deformed and adhered, the cell membrane was incomplete, the cytoplasm distribution was uneven, and the cell appeared hollow inside, which led to the death of S. scabies. In conclusion, we used bacteriocin for controlling potato common scab for the first time in this study, and it provides theoretical support for the further application of bacteriocin in the control of plant diseases.
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Affiliation(s)
- Jing Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Zhijun Zhou
- Experimental Training Center of Hebei Agricultural University, Baoding, China
| | - Xuefei Bai
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Dai Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Likui Zhang
- College of Environmental Science, Yangzhou University, Yangzhou, China
| | - Jinhui Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Beibei Wu
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
| | - Jiehua Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
- *Correspondence: Jiehua Zhu,
| | - Zhihui Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China
- Zhihui Yang,
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Biosynthesis and Production of Class II Bacteriocins of Food-Associated Lactic Acid Bacteria. FERMENTATION 2022. [DOI: 10.3390/fermentation8050217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Bacteriocins are ribosomally synthesized peptides made by bacteria that inhibit the growth of similar or closely related bacterial strains. Class II bacteriocins are a class of bacteriocins that are heat-resistant and do not undergo extensive posttranslational modification. In lactic acid bacteria (LAB), class II bacteriocins are widely distributed, and some of them have been successfully applied as food preservatives or antibiotic alternatives. Class II bacteriocins can be further divided into four subcategories. In the same subcategory, variations were observed in terms of amino acid identity, peptide length, pI, etc. The production of class II bacteriocin is controlled by a dedicated gene cluster located in the plasmid or chromosome. Besides the pre-bacteriocin encoding gene, the gene cluster generally includes various combinations of immunity, transportation, and regulatory genes. Among class II bacteriocin-producing LAB, some strains/species showed low yield. A multitude of fermentation factors including medium composition, temperature, and pH have a strong influence on bacteriocin production which is usually strain-specific. Consequently, scientists are motivated to develop high-yielding strains through the genetic engineering approach. Thus, this review aims to present and discuss the distribution, sequence characteristics, as well as biosynthesis of class II bacteriocins of LAB. Moreover, the integration of modern biotechnology and genetics with conventional fermentation technology to improve bacteriocin production will also be discussed in this review.
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Bacteriocins in the Era of Antibiotic Resistance: Rising to the Challenge. Pharmaceutics 2021; 13:pharmaceutics13020196. [PMID: 33540560 PMCID: PMC7912925 DOI: 10.3390/pharmaceutics13020196] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023] Open
Abstract
Decades of antibiotic misuse in clinical settings, animal feed, and within the food industry have led to a concerning rise in antibiotic-resistant bacteria. Every year, antimicrobial-resistant infections cause 700,000 deaths, with 10 million casualties expected by 2050, if this trend continues. Hence, innovative solutions are imperative to curb antibiotic resistance. Bacteria produce a potent arsenal of drugs with remarkable diversity that are all distinct from those of current antibiotics. Bacteriocins are potent small antimicrobial peptides synthetized by certain bacteria that may be appointed as alternatives to traditional antibiotics. These molecules are strategically employed by commensals, mostly Firmicutes, to colonize and persist in the human gut. Bacteriocins form channels in the target cell membrane, leading to leakage of low-molecular-weight, causing the disruption of the proton motive force. The objective of this review was to list and discuss the potential of bacteriocins as antimicrobial therapeutics for infections produced mainly by resistant pathogens.
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Nebbia S, Lamberti C, Lo Bianco G, Cirrincione S, Laroute V, Cocaign-Bousquet M, Cavallarin L, Giuffrida MG, Pessione E. Antimicrobial Potential of Food Lactic Acid Bacteria: Bioactive Peptide Decrypting from Caseins and Bacteriocin Production. Microorganisms 2020; 9:microorganisms9010065. [PMID: 33383704 PMCID: PMC7824078 DOI: 10.3390/microorganisms9010065] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/21/2020] [Accepted: 12/24/2020] [Indexed: 01/05/2023] Open
Abstract
Lactic acid bacteria (LAB) potential in the food industry and in the biotechnological sector is a well-established interest. LAB potential in counteracting especially food-borne infections has received growing attention, but despite being a road full of promises is yet poorly explored. Furthermore, the ability of LAB to produce antimicrobial compounds, both by ribosomal synthesis and by decrypting them from proteins, is of high value when considering the growing impact of multidrug resistant strains. The antimicrobial potential of 14 food-derived lactic acid bacteria strains has been investigated in this study. Among them, four strains were able to counteract Listeria monocytogenes growth: Lactococcus lactis SN12 and L. lactis SN17 by high lactic acid production, whereas L. lactis 41FLL3 and Lactobacillus sakei I151 by Nisin Z and Sakacin P production, respectively. Strains Lactococcus lactis MG1363, Lactobacillus rhamnosus 17D10 and Lactobacillus helveticus 4D5 were tested and selected for their potential attitude to hydrolyze caseins. All the strains were able to release bioactive peptides with already known antimicrobial, antihypertensive and opioid activities. These features render these strains or their bioactive molecules suitable for use in food as biocontrol agents, or as nutraceutical supplements to treat mild disorders such as moderate hypertension and children insomnia. These results highlight once again that LAB potential in ensuring food safety, food nutraceutical value and ultimately in favoring human health is still underexplored and underexploited.
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Affiliation(s)
- Stefano Nebbia
- Laboratory of Microbial and Applied Biochemistry-Department of Life Sciences and Systems Biology, Università di Torino, Via Accademia Albertina 13, 10123 Torino, Italy; (S.N.); (G.L.B.); (E.P.)
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, Largo Braccini, 10095 Grugliasco, Italy; (C.L.); (L.C.); (M.G.G.)
| | - Cristina Lamberti
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, Largo Braccini, 10095 Grugliasco, Italy; (C.L.); (L.C.); (M.G.G.)
| | - Giuliana Lo Bianco
- Laboratory of Microbial and Applied Biochemistry-Department of Life Sciences and Systems Biology, Università di Torino, Via Accademia Albertina 13, 10123 Torino, Italy; (S.N.); (G.L.B.); (E.P.)
| | - Simona Cirrincione
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, Largo Braccini, 10095 Grugliasco, Italy; (C.L.); (L.C.); (M.G.G.)
- Correspondence: ; Tel.: +39-011-670-9231
| | - Valerie Laroute
- Laboratoire d’ingénierie des systèmes biologiques et des procédés, Université de Toulouse, CNRS, INRA, INSA 135 Avenue de Rangueil, 31077 Toulouse, France; (V.L.); (M.C.-B.)
| | - Muriel Cocaign-Bousquet
- Laboratoire d’ingénierie des systèmes biologiques et des procédés, Université de Toulouse, CNRS, INRA, INSA 135 Avenue de Rangueil, 31077 Toulouse, France; (V.L.); (M.C.-B.)
| | - Laura Cavallarin
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, Largo Braccini, 10095 Grugliasco, Italy; (C.L.); (L.C.); (M.G.G.)
| | - Maria Gabriella Giuffrida
- Consiglio Nazionale delle Ricerche-Istituto di Scienze delle Produzioni Alimentari, Largo Braccini, 10095 Grugliasco, Italy; (C.L.); (L.C.); (M.G.G.)
| | - Enrica Pessione
- Laboratory of Microbial and Applied Biochemistry-Department of Life Sciences and Systems Biology, Università di Torino, Via Accademia Albertina 13, 10123 Torino, Italy; (S.N.); (G.L.B.); (E.P.)
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Probiotic properties of a phytase producing Pediococcus acidilactici strain SMVDUDB2 isolated from traditional fermented cheese product, Kalarei. Sci Rep 2020; 10:1926. [PMID: 32024895 PMCID: PMC7002416 DOI: 10.1038/s41598-020-58676-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 12/30/2019] [Indexed: 01/07/2023] Open
Abstract
The nutritional challenge faced by the monogastric animals due to the chelation effects of phytic acid, fuel the research on bioprospecting of probiotics for phytase production. Pediococcus acidilactici SMVDUDB2 isolated from Kalarei, exhibited extracellular phytase activity of 5.583 U/mL after statistical optimization of fermentation conditions viz. peptone (1.27%); temperature (37 °C); pH (6.26) and maltose (1.43%). The phytase enzyme possessed optimum pH and temperature of 5.5 and 37 °C, respectively and was thermostable at 60 °C. The enzyme was purified 6.42 fold with a specific activity of 245.12 U/mg with hydrophobic interaction chromatography. The purified enzyme had Km and Vmax values of 0.385 mM and 4.965 μmol/min respectively, with sodium phytate as substrate. The strain depicted more than 80% survival rate at low pH (pH 2.0, 3.0), high bile salt concentration (0.3 and 0.5%), after gastrointestinal transit, highest hydrophobicity affinity with ethyl acetate (33.33 ± 0%), autoaggregation (77.68 ± 0.68%) as well as coaggregation (73.57 ± 0.47%) with Staphylococcus aureus (MTCC 3160). The strain exhibited antimicrobial activity against Bacillus subtilis (MTCC 121), Mycobacterium smegmatis (MTCC 994), Staphylococcus aureus (MTCC 3160), Proteus vulgaris (MTCC 426), Escherichia coli (MTCC 1652) and Lactobacillus rhamnosus (MTCC 1408). The amount of exopolysaccharide produced by the strain was 2 g/L. This strain having the capability of phytate degradation and possessing probiotic traits could find application in food and feed sectors.
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Gutiérrez-Cortés C, Suarez H, Buitrago G, Nero LA, Todorov SD. Enhanced Bacteriocin Production by Pediococcus pentosaceus 147 in Co-culture With Lactobacillus plantarum LE27 on Cheese Whey Broth. Front Microbiol 2018; 9:2952. [PMID: 30559735 PMCID: PMC6286998 DOI: 10.3389/fmicb.2018.02952] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 11/16/2018] [Indexed: 01/04/2023] Open
Abstract
The production of bacteriocins by lactic acid bacteria (LAB) has been of wide interest in the food industry due to their potential application in biopreservation. The production of bacteriocins is usually low in single strain fermentation, but can improve when the bacteriocinogenic strain is cultured in association with another bacteria. The present work aims to evaluate the growth and production of bacteriocins by Pediococcus pentosaceus 147 (bacteriocinogenic strain) in co-culture with Lactobacillus plantarum LE27 (inducer strain) using a culture medium based on cheese whey (CW). Strains were inoculated in co-culture in a CW broth at 7.24 Log CFU/mL of initial concentration of P. pentosaceus 147 and incubated at 37°C. Bacteriocin production was measured after 24 h by the critical dilution method, biomass was measured by plating on MRS agar (1% aniline blue), and a mono-culture was used as a control. The titers of bacteriocins produced by P. pentosaceus 147 in mono-culture were 19,200 AU/mL lower than those obtained in co-culture with Lb. plantarum LE27 at 51,200 AU/mL. The effect of adding the inducer strain at different times of incubation (3, 6, 9, and 12 h) was evaluated, with the addition of the induction factor at the beginning of the incubation of P. pentosaceus 147 generating the highest bacteriocin activity. This study shows the potential of inducing bacteriocinogenesis using co-cultures of strains of the genera Pediococcus and Lactobacillus and using alternative substrates such as cheese whey.
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Affiliation(s)
- Carolina Gutiérrez-Cortés
- Instituto de Ciencia y Tecnología de Alimentos, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Héctor Suarez
- Instituto de Ciencia y Tecnología de Alimentos, Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Gustavo Buitrago
- Instituto de Biotecnología, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Luis Augusto Nero
- Departamento de Veterinária, Universidade Federal de Viçosa, Viçosa, Brazil
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Competition among Escherichia coli Strains for Space and Resources. Vet Sci 2018; 5:vetsci5040093. [PMID: 30400157 PMCID: PMC6313926 DOI: 10.3390/vetsci5040093] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/17/2018] [Accepted: 10/30/2018] [Indexed: 12/31/2022] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) are a subgroup of E. coli causing human diseases. Methods to control STEC in livestock and humans are limited. These and other emerging pathogens are a global concern and novel mitigation strategies are required. Habitats populated by bacteria are subjected to competition pressures due to limited space and resources but they use various strategies to compete in natural environments. Our objective was to evaluate non-pathogenic E. coli strains isolated from cattle feces for their ability to out-compete STEC. Competitive fitness of non-pathogenic E. coli against STEC were assessed in competitions using liquid, agar, and nutrient limiting assays. Winners were determined by enumeration using O-serogroup specific quantitative PCR or a semi-quantitative grading. Initial liquid competitions identified two strong non-pathogenic competitors (O103F and O26E) capable of eliminating various STEC including O157 and O111. The strain O103F was dominant across permeable physical barriers for all tested E. coli and STEC strains indicating the diffusion of antimicrobial molecules. In direct contact and even with temporal disadvantages, O103F out-competed STEC O157E. The results suggest that O103F or the diffusible molecule(s) it produces have a potential to be used as an alternative STEC mitigation strategy, either in medicine or the food industry.
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12
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Characterization of bacteriocins produced by strains of Pediococcus pentosaceus isolated from Minas cheese. ANN MICROBIOL 2018. [DOI: 10.1007/s13213-018-1345-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Fahim HA, Rouby WMAE, El-Gendy AO, Khairalla AS, Naguib IA, Farghali AA. Enhancement of the productivity of the potent bacteriocin avicin A and improvement of its stability using nanotechnology approaches. Sci Rep 2017; 7:10604. [PMID: 28878272 PMCID: PMC5587769 DOI: 10.1038/s41598-017-10157-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/02/2017] [Indexed: 01/25/2023] Open
Abstract
Herein, enhancements of the yield and antimicrobial activity duration of the bacteriocin avicin A were accomplished using fractional factorial design (FFD) and layered double hydroxide (LDH) nanoparticles. Firstly, potential factors affecting bacteriocin production were selected for preliminary study. By a 25-1 FFD, high pH was shown to have a positive effect on avicin A yield, while temperature and duration of incubation, as well as peptone nitrogen sources all had negative effects. The highest bacteriocin production and activity (2560 BU/ml) were observed after 30 h of incubation at 30 °C, with pH adjustment at 7, and in the presence of 2 g mannitol as carbon source and 2.2 g peptone as nitrogen source. Secondly, avicin A nanocomposites with different LDH precursors were tested. Only avicin A-ZnAl-CO3 LDH demonstrated a potent antimicrobial activity against Lactobacillus sakei LMGT 2313 that lasted for at least 24 days, as compared to the values of 6 and 15 days observed with the free avicin A that has been stored at room temperature and at 4 °C, respectively. In conclusion, avicin A production and stability can be improved by manipulating the growth conditions and media composition, together with conjugation to LDHs.
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Affiliation(s)
- Hazem A Fahim
- Biotechnology and Life Sciences Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Waleed M A El Rouby
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed O El-Gendy
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| | - Ahmed S Khairalla
- Microbiology and Immunology Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt.
| | - Ibrahim A Naguib
- Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Ahmed A Farghali
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef, Egypt
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14
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Nath A, Szécsi G, Csehi B, Mednyánszky Z, Kiskó G, Bányai É, Dernovics M, Koris A. Production of Hypoallergenic Antibacterial Peptides from Defatted Soybean Meal in Membrane Bioreactor: A Bioprocess Engineering Study with Comprehensive Product Characterization. Food Technol Biotechnol 2017; 55:308-324. [PMID: 29089846 PMCID: PMC5654427 DOI: 10.17113/ftb.55.03.17.5040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 05/19/2017] [Indexed: 11/12/2022] Open
Abstract
Hypoallergenic antibacterial low-molecular-mass peptides were produced from defatted soybean meal in a membrane bioreactor. In the first step, soybean meal proteins were digested with trypsin in the bioreactor, operated in batch mode. For the tryptic digestion of soybean meal protein, optimum initial soybean meal concentration of 75 g/L, temperature of 40 °C and pH=9.0 were determined. After enzymatic digestion, low-molecular-mass peptides were purified with cross-flow flat sheet membrane (pore size 100 µm) and then with tubular ceramic ultrafiltration membrane (molecular mass cut-off 5 kDa). Effects of transmembrane pressure and the use of a static turbulence promoter to reduce the concentration polarization near the ultrafiltration membrane surface were examined and their positive effects were proven. For the filtration with ultrafiltration membrane, transmembrane pressure of 3·105 Pa with 3-stage discontinuous diafiltration was found optimal. The molecular mass distribution of purified peptides using ultrafiltration membrane was determined by a liquid chromatography-electrospray ionization quadrupole time-of-flight mass spectrometry setup. More than 96% of the peptides (calculated as relative frequency) from the ultrafiltration membrane permeate had the molecular mass M≤1.7 kDa and the highest molecular mass was found to be 3.1 kDa. The decrease of allergenic property due to the tryptic digestion and membrane filtration was determined by an enzyme-linked immunosorbent assay and it was found to exceed 99.9%. It was also found that the peptides purified in the ultrafiltration membrane promoted the growth of Pediococcus acidilactici HA6111-2 and they possessed antibacterial activity against Bacillus cereus.
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Affiliation(s)
- Arijit Nath
- Department of Food Engineering, Faculty of Food Science, Szent István University, Ménesi st 44,
HU-1118 Budapest, Hungary
| | - Gábor Szécsi
- Department of Food Engineering, Faculty of Food Science, Szent István University, Ménesi st 44,
HU-1118 Budapest, Hungary
| | - Barbara Csehi
- Department of Refrigeration and Livestock Product Technology, Faculty of Food Science,
Szent István University, Ménesi st 43–45, HU-1118 Budapest, Hungary
| | - Zsuzsa Mednyánszky
- Department of Food Chemistry and Nutrition, Faculty of Food Science, Szent István University,
Budapest, Somlói st 14–16, HU-1118 Budapest, Hungary
| | - Gabriella Kiskó
- Department of Food Microbiology and Biotechnology, Faculty of Food Science, Szent István University, Budapest, Somlói st 14–16, HU-1118 Budapest, Hungary
| | - Éva Bányai
- Department of Applied Chemistry, Faculty of Food Science, Szent István University, Budapest,
Villányi st 29–33, HU-1118 Budapest, Hungary
| | - Mihály Dernovics
- Department of Applied Chemistry, Faculty of Food Science, Szent István University, Budapest,
Villányi st 29–33, HU-1118 Budapest, Hungary
| | - András Koris
- Department of Food Engineering, Faculty of Food Science, Szent István University, Ménesi st 44,
HU-1118 Budapest, Hungary
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15
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Jacob J, Rajendran RU, Priya SH, Purushothaman J, Saraswathy Amma DKBN. Enhanced antibacterial metabolite production through the application of statistical methodologies by a Streptomyces nogalater NIIST A30 isolated from Western Ghats forest soil. PLoS One 2017; 12:e0175919. [PMID: 28437452 PMCID: PMC5402949 DOI: 10.1371/journal.pone.0175919] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 03/14/2017] [Indexed: 11/22/2022] Open
Abstract
Streptomyces strains isolated from Nelliyampathy forest soil of Western Ghats, Kerala, India were evaluated for their antibacterial efficacy against two indicator pathogenic bacteria (Escherichia coli and Staphylococcus aureus). Among 140 strains tested, sixteen recorded potent antibacterial properties and were further screened against eleven bacterial pathogens. A strain identified as Streptomyces nogalater and designated as NIIST A30 exhibited maximum inhibition against all the test pathogens. Among the eight fermentation media tested, inorganic salts starch broth recorded the best for antibacterial production. The ethyl acetate crude extract exhibited antioxidant properties with IC50 value of 30 μg/mL and had no cytotoxicity towards L6, H9c2 and RAW 264.7 cell lines up to a concentration of 50 μg/mL. Maximum metabolite production was achieved in pH 7.0 at 35°C after 7 days incubation. The significant media components for maximum metabolite production were optimized through response surface methodology employing Plackett-Burman and Box-Behnken designs. The composition of the final optimized medium was soluble starch, 14.97g; (NH4)2SO4, 2.89g; K2HPO4, 2.07g; MgSO4.7H2O, 1g; NaCl, 1g, CaCO3, 2g; FeSO4.7H2O, 1mg; MnCl2.7H2O, 1mg; and ZnSO4.7H2O, 1mg per litre of distilled water. The optimization resulted an antibacterial activity of 28±1.5mm against S. epidermidis which was in close accordance with the predicted value of 30 mm. It is also evident from the result that an increase of 86.66% antibacterial production was recorded in optimized media. The chosen method was economical, efficient and useful for future antibacterial drug discovery from a broad spectrum metabolite producer like Streptomyces nogalater NIIST A30.
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Affiliation(s)
- Jubi Jacob
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Reshma Uma Rajendran
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Syama Hari Priya
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Jayamurthy Purushothaman
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
| | - Dileep Kumar Bhaskaran Nair Saraswathy Amma
- Agro- Processing and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR),CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, Kerala, India
- * E-mail:
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