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Singh JK, Devi PB, Reddy GB, Jaiswal AK, Kavitake D, Shetty PH. Biosynthesis, classification, properties, and applications of Weissella bacteriocins. Front Microbiol 2024; 15:1406904. [PMID: 38939182 PMCID: PMC11210197 DOI: 10.3389/fmicb.2024.1406904] [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: 03/25/2024] [Accepted: 05/29/2024] [Indexed: 06/29/2024] Open
Abstract
This review aims to comprehensively chronicle the biosynthesis, classification, properties, and applications of bacteriocins produced by Weissella genus strains, particularly emphasizing their potential benefits in food preservation, human health, and animal productivity. Lactic Acid Bacteria (LAB) are a class of microorganisms well-known for their beneficial role in food fermentation, probiotics, and human health. A notable property of LAB is that they can synthesize antimicrobial peptides known as bacteriocins that exhibit antimicrobial action against both closely related and other bacteria as well. Bacteriocins produced by Weissella spp. are known to exhibit antimicrobial activity against several pathogenic bacteria including food spoilage species, making them highly invaluable for potential application in food preservation and food safety. Importantly, they provide significant health benefits to humans, including combating infections, reducing inflammation, and modulating the gut microbiota. In addition to their applications in food fermentation and probiotics, Weissella bacteriocins show promising prospects in poultry production, processing, and improving animal productivity. Future research should explore the utilization of Weissella bacteriocins in innovative food safety measures and medical applications, emphasizing their potential to combat antibiotic-resistant pathogens, enhance gut microbiota composition and function, and synergize with existing antimicrobial therapies.
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Affiliation(s)
- Jahnavi Kumari Singh
- Department of Food Science and Technology, Pondicherry University, Pondicherry, India
| | | | - G. Bhanuprakash Reddy
- Biochemistry Division, Indian Council of Medical Research (ICMR)-National Institute of Nutrition, Hyderabad, Telangana, India
| | - Amit K. Jaiswal
- School of Food Science and Environmental Health, Faculty of Sciences and Health, Technological University Dublin, Dublin, Ireland
| | - Digambar Kavitake
- Biochemistry Division, Indian Council of Medical Research (ICMR)-National Institute of Nutrition, Hyderabad, Telangana, India
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Yadav MK, Tiwari SK. Mechanism of Cell-Killing Activity of Plantaricin LD1 Against Escherichia coli ATCC 25922. Appl Biochem Biotechnol 2024:10.1007/s12010-024-04927-1. [PMID: 38526659 DOI: 10.1007/s12010-024-04927-1] [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] [Accepted: 03/18/2024] [Indexed: 03/27/2024]
Abstract
Plantaricin LD1 was purified from a potential probiotic strain, Lactobacillus plantarum LD1 previously isolated from indigenous food, Dosa. In this study, we have performed a detailed mechanism of action of plantaricin LD1 against Escherichia coli ATCC 25922 considering Micrococcus luteus MTCC 106 as control. The plantaricin LD1 showed a minimum inhibitory concentration (MIC) of 34.57 µg/mL and a minimum bactericidal concentration (MBC) of 138.3 µg/mL against M. luteus MTCC 106, whereas MIC 69.15 µg/mL and MBC 276.6 µg/mL were found against E. coli ATCC 25922. The efflux of potassium ions, dissipation of membrane potential (∆ψ), and transmembrane pH gradient (∆pH) of plantaricin LD1-treated cells suggested the membrane-acting nature of plantaricin LD1. Plantaricin LD1 also caused degradation of the genomic DNA of the target strains tested. The cell killing was confirmed by staining with propidium iodide and visualized under light and electron microscopes. The bacteriocin-treated cells were found to be ruptured, swollen, and elongated. Thus, the findings indicate plantaricin LD1 kills E. coli ATCC 25922 by interacting with the cell membrane resulting in the efflux of intracellular contents and also causing degradation of nucleic acids leading to cell death.
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Affiliation(s)
- Manoj Kumar Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Santosh Kumar Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
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Lavanya BS, Sreejit V, Preetha R. Lactobacillus plantarum J9, a potential probiotic isolated from cereal/pulses based fermented batter for traditional Indian food and its microencapsulation. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2023; 60:906-915. [PMID: 36908363 PMCID: PMC9998814 DOI: 10.1007/s13197-021-05258-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/27/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
This work analyzed the probiotic properties of isolates from cereal-based Indian fermented food. The isolates were tested for lactic acid production, cell hydrophobicity, antibiotic sensitivity, sensitivity to acidic conditions, and increased salt concentration. This study also evaluated the ability of the probiotic isolates to ferment sugars and their antioxidant activity. The potential probiotic L. plantarum J9 isolated from jangri batter was encapsulated using 2.5% sodium alginate and CaCl2 by extrusion method with an encapsulation efficiency greater than 99%. After 2 h of incubation, in simulated gastric juice the encapsulated J9 cells reduced from 11.8 to 6.8 log10 CFU/ml however, free J9 cells reduced from 11.8 to 1.89 log10 CFU/ml. Similarly, encapsulated J9 cells reduced from 11.8 to 8.0 log10 CFU/ml but free J9 cells reduced from 11.6 to 0.890 log10 CFU/ml in simulated intestinal juice after 2 h incubation. The microencapsulation of L. plantarum J9 with alginate proves effective in delivering viable bacterial cells at required levels. Probiotic with antioxidant activity and antagonistic properties against food-borne pathogens is reported for the first time from jangri batter. The sodium alginate microencapsulation allows viable cells to reach a beneficial level, and hence this study aids in developing new probiotic products.
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Affiliation(s)
- B. Swetha Lavanya
- Department of Food Process Engineering, School of Bioengineering, The College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Chengalpattu District, Chennai, 603203 Tamil Nadu India
| | - V. Sreejit
- Department of Food Process Engineering, School of Bioengineering, The College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Chengalpattu District, Chennai, 603203 Tamil Nadu India
| | - R. Preetha
- Department of Food Process Engineering, School of Bioengineering, The College of Engineering and Technology, SRM Institute of Science and Technology, SRM Nagar, Kattankulathur, Chengalpattu District, Chennai, 603203 Tamil Nadu India
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El Hage R, El Hage J, Snini SP, Ammoun I, Touma J, Rachid R, Mathieu F, Sabatier JM, Abi Khattar Z, El Rayess Y. The Detection of Potential Native Probiotics Lactobacillus spp. against Salmonella Enteritidis, Salmonella Infantis and Salmonella Kentucky ST198 of Lebanese Chicken Origin. Antibiotics (Basel) 2022; 11:antibiotics11091147. [PMID: 36139927 PMCID: PMC9495222 DOI: 10.3390/antibiotics11091147] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/21/2022] [Accepted: 08/22/2022] [Indexed: 11/29/2022] Open
Abstract
Salmonella continues to be a major threat to public health, especially with respect to strains from a poultry origin. In recent years, an increasing trend of antimicrobial resistance (AMR) in Salmonella spp. was observed due to the misuse of antibiotics. Among the approaches advised for overcoming AMR, probiotics from the Lactobacillus genus have increasingly been considered for use as effective prophylactic and therapeutic agents belonging to the indigenous microbiota. In this study, we isolated lactobacilli from the ilea and ceca of hens and broilers in order to evaluate their potential probiotic properties. Four species were identified as Limosilactobacillusreuteri (n = 22, 45.8%), Ligilactobacillussalivarius (n = 20, 41.6%), Limosilactobacillus fermentum (n = 2, 4.2%) and Lactobacillus crispatus (n = 1, 2%), while three other isolates (n = 3, 6.25%) were non-typable. Eight isolates, including Ligilactobacillussalivarius (n = 4), Limosilactobacillusreuteri (n = 2), L. crispatus (n = 1) and Lactobacillus spp. (n = 1) were chosen on the basis of their cell surface hydrophobicity and auto/co-aggregation ability for further adhesion assays using the adenocarcinoma cell line Caco-2. The adhesion rate of these strains varied from 0.53 to 10.78%. Ligilactobacillussalivarius A30/i26 and 16/c6 and Limosilactobacillus reuteri 1/c24 showed the highest adhesion capacity, and were assessed for their ability to compete in and exclude the adhesion of Salmonella to the Caco-2 cells. Interestingly, Ligilactobacillussalivarius 16/c6 was shown to significantly exclude the adhesion of the three Salmonella serotypes, S. Enteritidis, S. Infantis and S. Kentucky ST 198, to Caco-2 cells. The results of the liquid co-culture assays revealed a complete inhibition of the growth of Salmonella after 24 h. Consequently, the indigenous Ligilactobacillussalivarius 16/c6 strain shows promising potential for use as a preventive probiotic added directly to the diet for the control of the colonization of Salmonella spp. in poultry.
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Affiliation(s)
- Rima El Hage
- Food Microbiology Laboratory, Lebanese Agricultural Research Institute (LARI), Fanar Station, Jdeideh El-Metn P.O. Box 901965, Lebanon
- Laboratoire de Génie Chimique, UMR 5503 CNRS/INPT/UPS, INP-ENSAT, 1, Université de Toulouse, Avenue de l’Agrobiopôle, 31326 Castanet-Tolosan, France
- Correspondence: (R.E.H.); (Z.A.K.)
| | - Jeanne El Hage
- Animal Health Laboratory, Lebanese Agricultural Research Institute (LARI), Fanar Station, Jdeideh El-Metn P.O. Box 901965, Lebanon
| | - Selma P. Snini
- Laboratoire de Génie Chimique, UMR 5503 CNRS/INPT/UPS, INP-ENSAT, 1, Université de Toulouse, Avenue de l’Agrobiopôle, 31326 Castanet-Tolosan, France
| | - Imad Ammoun
- Milk and Milk Products Laboratory, Lebanese Agricultural Research Institute (LARI), Fanar Station, Jdeideh El-Metn P.O. Box 901965, Lebanon
| | - Joseph Touma
- Food Microbiology Laboratory, Lebanese Agricultural Research Institute (LARI), Fanar Station, Jdeideh El-Metn P.O. Box 901965, Lebanon
| | - Rami Rachid
- Food Microbiology Laboratory, Lebanese Agricultural Research Institute (LARI), Fanar Station, Jdeideh El-Metn P.O. Box 901965, Lebanon
| | - Florence Mathieu
- Laboratoire de Génie Chimique, UMR 5503 CNRS/INPT/UPS, INP-ENSAT, 1, Université de Toulouse, Avenue de l’Agrobiopôle, 31326 Castanet-Tolosan, France
| | - Jean-Marc Sabatier
- CNRS UMR 7051, INP, Inst Neurophysiopathol, Aix-Marseille Université, 13385 Marseille, France
| | - Ziad Abi Khattar
- Microbiology/Tox-Ecotoxicology Team, Laboratory of Georesources, Geosciences and Environment (L2GE), Faculty of Sciences 2, Lebanese University, Campus Fanar, Jdeideh El-Metn P.O. Box 90656, Lebanon
- Correspondence: (R.E.H.); (Z.A.K.)
| | - Youssef El Rayess
- Faculty of Agricultural and Food Sciences, Holy Spirit University of Kaslik, Jounieh P.O. Box 446, Lebanon
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Yadav MK, Yadav P, Dhiman M, Tewari S, Tiwari SK. Plantaricin LD1 purified from Lactobacillus plantarum LD1 inhibits biofilm formation of Enterococcus faecalis ATCC 29212 in tooth model. Lett Appl Microbiol 2022; 75:623-631. [PMID: 35146783 DOI: 10.1111/lam.13668] [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: 08/05/2021] [Revised: 01/14/2022] [Accepted: 02/04/2022] [Indexed: 11/28/2022]
Abstract
Plantaricin LD1 was purified to homogeneity using activity-guided chromatography. Enterococcus faecalis ATCC 29212 was found to be sensitive to plantaricin LD1 showing 13 ± 0.21 mm zone of growth inhibition. The minimum inhibitory concentration (MIC) was found to be 50 µg ml-1 against Ent. faecalis ATCC 29212. The in vitro biofilm formation by Ent. faecalis ATCC 29212 was observed which was completely inhibited in the presence of bacteriocin. Similarly, biofilm formation was also observed on the teeth surface showing purple colour whereas, treated-teeth were clean indicated no biofilm formation. Further, untreated cells of Ent. faecalis ATCC 29212 were found normal and plantaricin LD1-treated cells were ruptured seen under light microscope suggesting killing of target cells. These findings have proven the initial leads for antimicrobial and anti-biofilm activity of plantaricin LD1 against Ent. faecalis and its possible application for the treatment of endodontic diseases.
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Affiliation(s)
- Manoj Kumar Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak-124001, Haryana, India
| | - Priyanka Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak-124001, Haryana, India
| | - Meenu Dhiman
- Department of Conservative Dentistry and Endodontics, Post Graduate Institute of Dental Sciences, Rohtak-124001, Haryana, India
| | - Sanjay Tewari
- Department of Conservative Dentistry and Endodontics, Post Graduate Institute of Dental Sciences, Rohtak-124001, Haryana, India
| | - Santosh Kumar Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak-124001, Haryana, India
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Polydiacetylene vesicles acting as colorimetric sensor for the detection of plantaricin LD1. Anal Biochem 2021; 631:114368. [PMID: 34499898 DOI: 10.1016/j.ab.2021.114368] [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: 06/18/2021] [Revised: 09/03/2021] [Accepted: 09/05/2021] [Indexed: 01/14/2023]
Abstract
The interaction of antimicrobial peptides with membrane lipids plays a major role in numerous physiological processes. In this study, polydiacetylene (PDA) vesicles were synthesized using 10, 12-tricosadiynoic acid (TRCDA) and 1, 2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC). These vesicles were applied as artificial membrane biosensor for the detection of plantaricin LD1 purified from Lactobacillus plantarum LD1. Plantaricin LD1 (200 μg/mL) was able to interact with PDA vesicles by changing the color from blue to red with colorimetric response 30.26 ± 0.59. Nisin (200 μg/mL), used as control, also changed the color of the vesicles with CR% 50.56 ± 0.98 validating the assay. The vesicles treated with nisin and plantaricin LD1 showed increased infrared absorbance at 1411.46 and 1000-1150 cm-1 indicated the interaction of bacteriocins with phospholipids and fatty acids, respectively suggesting membrane-acting nature of these bacteriocins. Further, microscopic observation of bacteriocin-treated vesicles showed several damages indicating the interaction of bacteriocins. These findings suggest that the PDA vesicles may be used as bio-mimetic sensor for the detection of bacteriocins produced by several probiotics in food and therapeutic applications.
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Scale-up production of and dietary supplementation with the recombinant antimicrobial peptide tilapia piscidin 4 to improve growth performance in Gallus gallus domesticus. PLoS One 2021; 16:e0253661. [PMID: 34166442 PMCID: PMC8224963 DOI: 10.1371/journal.pone.0253661] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 06/10/2021] [Indexed: 12/31/2022] Open
Abstract
Antimicrobial peptides (AMPs) are short and positively charged peptides with broad-spectrum antimicrobial activities. AMPs have been investigated as potential antibiotic alternatives to improve growth performance and prevent pathogen infection in the poultry industry. The antimicrobial peptide tilapia piscidin 4 (TP4) was derived from Oreochromis niloticus, possesses antimicrobial activities and immunomodulatory properties, promotes intestinal health, and protects against pathogen infection. The codon-optimized sequence of TP4 was introduced into the pPICZαA vector and transformed into Pichia pastoris. Large-scale expression was induced following culture with methanol in a 500-liter fermenter. Freeze drying of fermented rTP4 broth and then rTP4 evaluation as a feed additive for Gallus gallus domesticus were performed. The in vitro antimicrobial activity of recombinant TP4 (rTP4) against gram-positive and gram-negative pathogens was evaluated. Evaluation of the effect of temperature on the antimicrobial activity of rTP4 showed its high stability at high temperatures. rTP4 significantly enhanced the phagocytic activity of macrophage cells, indicating that rTP4 has a remarkable ability to stimulate macrophages. rTP4 was used as a dietary supplement at 0.75, 1.5, 3.0, 6.0 and 12% in G. g. domesticus for five weeks, and growth performance, gut microbiota composition, and histology were assessed. The 3.0% rTP4 supplement group showed a significant increase in weight gain ratio and feed efficiency compared to those of the basal broiler diet group. Crude rTP4 was expressed by yeast to significantly promote growth efficiency and resistance against pathogens in G. g. domesticus, which could indicate its use as a suitable alternative to antibiotics as feed additives in the poultry industry.
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Fuochi V, Emma R, Furneri PM. Bacteriocins, A Natural Weapon Against Bacterial Contamination for Greater Safety and Preservation of Food: A Review. Curr Pharm Biotechnol 2021; 22:216-231. [PMID: 32621714 DOI: 10.2174/1389201021666200704145427] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/27/2020] [Accepted: 06/01/2020] [Indexed: 11/22/2022]
Abstract
Nowadays, consumers have become increasingly attentive to human health and the use of more natural products. Consequently, the demand for natural preservatives in the food industry is more frequent. This has led to intense research to discover new antimicrobial compounds of natural origin that could effectively fight foodborne pathogens. This research aims to safeguard the health of consumers and, above all, to avoid potentially harmful chemical compounds. Lactobacillus is a bacterial genus belonging to the Lactic Acid Bacteria and many strains are defined GRAS, generally recognized as safe. These strains are able to produce substances with antibacterial activity against food spoilage bacteria and contaminating pathogens: the bacteriocins. The aim of this review was to focus on this genus and its capability to produce antibacterial peptides. The review collected all the information from the last few years about bacteriocins produced by Lactobacillus strains, isolated from clinical or food samples, with remarkable antimicrobial activities useful for being exploited in the food field. In addition, the advantages and disadvantages of their use and the possible ways of improvement for industrial applications were described.
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Affiliation(s)
- Virginia Fuochi
- Universita degli Studi di Catania, Dipartimento di Scienze Biomediche e Biotecnologiche BIOMETEC, Sez. Microbiologia, Torre Biologica, via S. Sofia 97, 95123 Catania, Italy
| | - Rosalia Emma
- Universita degli Studi di Catania, Dipartimento di Scienze Biomediche e Biotecnologiche BIOMETEC, Sez. Microbiologia, Torre Biologica, via S. Sofia 97, 95123 Catania, Italy
| | - Pio M Furneri
- Universita degli Studi di Catania, Dipartimento di Scienze Biomediche e Biotecnologiche BIOMETEC, Sez. Microbiologia, Torre Biologica, via S. Sofia 97, 95123 Catania, Italy
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Screening of bacteriocin-producing lactic acid bacteria in Chinese homemade pickle and dry-cured meat, and bacteriocin identification by genome sequencing. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109177] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Simultaneous Bioconversion of Gelatinized Starchy Waste from the Rice Noodle Manufacturing Process to Lactic Acid and Maltose-Forming α-Amylase by Lactobacillus plantarum S21, Using a Low-Cost Medium. FERMENTATION 2019. [DOI: 10.3390/fermentation5020032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
A direct bioconversion of gelatinized starchy waste (GSW) to lactic acid by amylolytic lactic acid bacterium Lactobacillus plantarum S21 was investigated. Corn steep liquor (CSL) was selected as the most suitable low-cost nitrogen source for replacing yeast extract, beef extract, and peptone in De Man, Rogosa and Sharpe (MRS) medium. Plackett–Burman design results indicated that GSW and CSL were the two most nutrients that significantly influence lactic acid production, among eight medium components, including GSW, CSL, K2HPO4, CH3COONa, (NH4)2HC6H5O7, MgSO4, MnSO4, and Tween 80. A new low-cost medium containing only GSW (134.4 g/L) and CSL (187.7 g/L) was achieved as omitting other six components from the optimized medium had no effect on lactic acid yield. Batch fermentation at 37 °C both in 1 L and 10 L jar fermenters showed non-significantly different productivity. A by-product, maltose-forming α-amylase, was successfully achieved up to 96% recovery yield using an ultrafiltration unit equipped with a 50 kDa cut-off membrane. Crude lactic acid exhibited the additional benefit of antimicrobial activity against food and feed pathogens Salmonella enterica serovar Typhimurium TISTR 292, Vibrio cholerae TH-001, and also E. coli ATCC 25922. This study presents a promising bioprocess for the simultaneous production of lactic acid, and a value-added food enzyme, using only two industrial wastes, GSW and CSL, as the medium components.
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Characterization of a broad spectrum bacteriocin produced by Lactobacillus plantarum MXG-68 from Inner Mongolia traditional fermented koumiss. Folia Microbiol (Praha) 2019; 64:821-834. [PMID: 30895557 DOI: 10.1007/s12223-019-00697-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/11/2019] [Indexed: 10/27/2022]
Abstract
An agar well diffusion assay (AWDA) was used to isolate a high bacteriocin-producing strain with a broad spectrum of antibacterial activity, strain MXG-68, from Inner Mongolia traditional fermented koumiss. Lactobacillus plantarum MXG-68 was identified by morphological, biochemical, and physiological characteristics and 16S rDNA analysis. The production of antibacterial substance followed a growth-interrelated model, starting at the late lag phase of 4 h and arriving at a maximum value in the middle of the stationary phase at 24 h. Antibacterial activity was abolished or decreased in the presence of pepsin, chymotrypsin, trypsin, proteinase, and papain K. The results showed that antibacterial substances produced by L. plantarum MXG-68 were proteinaceous and could thus be classified as the bacteriocin, named plantaricin MXG-68. The molar mass of plantaricin MXG-68 was estimated to be 6.5 kDa, and the amino acid sequence of its N-terminal was determined to be VYGPAGIFNT. The mode of plantaricin MXG-68 action was determined to be bactericidal. Bacteriocin in cell-free supernatant (CFS) at pH 7 was stable at different temperatures (60 °C, 80 °C, 100 °C, 121 °C for 30 min; 4 °C and - 20 °C for 30 days), as well as at pH 2.0-10.0. Antibacterial activity maintained stable after treatment with organic solvents, surfactants, and detergents but increased in response to EDTA. Response surface methodology (RSM) revealed the optimum conditions of bacteriocin production in L. plantarum MXG-68, and the bacteriocin production in medium optimized by RSM was 26.10% higher than that in the basal MRS medium.
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Gomaa EZ. Synergistic Antibacterial Efficiency of Bacteriocin and Silver Nanoparticles Produced by Probiotic Lactobacillus paracasei Against Multidrug Resistant Bacteria. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9759-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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13
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Oliveira J, Costa K, Acurcio L, Sandes S, Cassali G, Uetanabaro A, Costa A, Nicoli J, Neumann E, Porto A. In vitro and in vivo evaluation of two potential probiotic lactobacilli isolated from cocoa fermentation (Theobroma cacao L.). J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.05.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Yadav MK, Singh B, Tiwari SK. Comparative Analysis of Inhibition-Based and Indicator-Independent Colorimetric Assay for Screening of Bacteriocin-Producing Lactic Acid Bacteria. Probiotics Antimicrob Proteins 2018; 11:687-695. [PMID: 30032477 DOI: 10.1007/s12602-018-9445-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Screening of bacteriocin-producing lactic acid bacteria (LAB) is an important aspect for the search of new/novel probiotic strains. Here, a vesicle-based colorimetric assay was compared with conventional inhibition-based antimicrobial assays using 54 isolates of LAB. All isolates demonstrated zone of growth inhibition ranging from 2.5 to 7.5 mm against indicator strain, Micrococcus luteus MTCC106 using point inoculation method. Cell-free supernatant of the isolates showed zone of growth inhibition varying from 14.5 to 25 mm using agar well diffusion assay. These isolates inhibited the growth of indicator strain by 89.56-98.65%. The antimicrobial activity present in cell-free supernatant of different isolates was found to be in the range of 10-160 AU ml- 1. The treatment of polydiacetylene (PDA) vesicles with cell-free supernatant of selected isolates led to blue-red color transition, and presence of protein band on tricine SDS-PAGE confirmed the presence of membrane-acting peptides, bacteriocins. The colorimetric responses (CR%) varied between 0 and 59%, and the assay was found to be more sensitive, faster, and reliable as compared to the other conventional indicator-based methods used. Therefore, the colorimetric assay may be specifically applied for screening of bacteriocin-producing LAB.
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Affiliation(s)
- Manoj Kumar Yadav
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Bijender Singh
- Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, 124001, India
| | - Santosh Kumar Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak, Haryana, 124001, India.
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Meng F, Zhu X, Lu F, Bie X, Lu Z. Functional Analysis of Plantaricin E and Its Mutant by Heterologous Expression in Escherichia coli. Appl Biochem Biotechnol 2016; 182:311-323. [PMID: 27854041 DOI: 10.1007/s12010-016-2328-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 11/07/2016] [Indexed: 10/20/2022]
Abstract
Plantaricins are a group of ribosomally synthesized antimicrobial peptides in Lactobacillus plantarum that exert antimicrobial activities against some foodborne pathogens. In this study, we observed that plantaricin E in L. plantarum 163 was missing 19 amino acids (plnE mutant amino acid sequence: FNRGGYNFGKSVRH, plnE amino acid sequence: FNRGGYNFGKSVRHVVDAIGSVAGIRGILKSIR). In order to study the effects of mutant plnE, plnE mutant genes with and without the signal peptide were cloned from the L. plantarum 163 genome, linked to the pET32a vector, and expressed via a fusion protein (thioredoxin) in Escherichia coli BL21 (DE3). All target proteins were purified using Ni-NTA, SP FF columns, and RP-HPLC. The purified proteins were stable in an acidic environment and at temperatures below 80 °C, but they were easily degraded under alkaline conditions and by protease treatment. They showed antimicrobial activity against gram-positive bacteria such as Micrococcus luteus, Staphylococcus epidermidis, Lactococcus lactis, Lactobacillus paracasei, and Listeria innocua. In addition, SP-plnE and PlnE exerted stronger activity than nisin. The signal peptide had a positive effect on the activities of PlnE and PlnEm. Thus, these purified proteins may have potential applications in the food industry to control foodborne pathogens.
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Affiliation(s)
- Fanqiang Meng
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing, 210095, China
| | - Xiaoyu Zhu
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing, 210095, China
| | - Fengxia Lu
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing, 210095, China
| | - Xiaomei Bie
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing, 210095, China
| | - Zhaoxin Lu
- College of Food Science and Technology, Nanjing Agriculture University, 1 Weigang, Nanjing, 210095, China.
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Phospholipid/Polydiacetylene Vesicle-Based Colorimetric Assay for High-Throughput Screening of Bacteriocins and Halocins. Appl Biochem Biotechnol 2016; 182:142-154. [PMID: 27844338 DOI: 10.1007/s12010-016-2316-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 10/30/2016] [Indexed: 12/20/2022]
Abstract
The colorimetric assay is phospholipid/polydiacetylene vesicle-based assay used for the detection of membrane-acting peptides. Bacteriocins and halocins are antimicrobial peptides known to kill target cells by membrane disruption. Therefore, the assay was applied for high-throughput (HTP) screening of bacteriocins and halocins produced by lactic acid bacteria and haloarchaea, respectively. The assay consisted of vesicles which were synthesized using four different phospholipids: dipalmitoylphosphatydilcholine (DPPC), dimyristoylphosphatidylcholine (DMPC), dimyristoylphosphoethanolamine (DMPE) and dimyristoylphosphatidylglycerol (DMPG) in combination with diacetylene monomer 10,12-tricosadiy noic acid (TRCDA). These vesicles demonstrated blue colour at 640 nm and turned pink/red after interaction with nisin. DMPE/TRCDA vesicles showed pink colour with the highest colorimetric response (CR %) after treatment with nisin and, therefore, selected for the screening of bacteriocins and halocins. The colour of the vesicles was changed within 5 min in the presence of 5 μM nisin suggesting the sensitivity of assay. The assay was applied on 54 strains of lactic acid bacteria (LAB) and 53 haloarchaea for screening of bacteriocins and halocins, respectively. Out of these strains, three strains of LAB and five strains of haloarchaea were found to be bacteriocin and halocin non-producer, respectively. The other strains demonstrated the presence of bacteriocins and halocins. The colorimetric assay was found to be rapid, specific and reliable for HTP screening of antimicrobial peptides such as bacteriocins and halocins from producer strains isolated from various natural resources.
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Kaur R, Tiwari SK. Isolation, identification and characterization of Pediococcus pentosaceus LB44 and Weissella confusa LM85 for the presence of bacteriocin-like inhibitory substances (BLIS). Microbiology (Reading) 2016. [DOI: 10.1134/s0026261716050088] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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18
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Kumar V, Sheoran P, Gupta A, Yadav J, Tiwari SK. Antibacterial property of bacteriocin produced by Lactobacillus plantarum LD4 isolated from a fermented food. ANN MICROBIOL 2016. [DOI: 10.1007/s13213-016-1230-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Gupta A, Tiwari SK, Netrebov V, Chikindas ML. Biochemical Properties and Mechanism of Action of Enterocin LD3 Purified from Enterococcus hirae LD3. Probiotics Antimicrob Proteins 2016; 8:161-9. [DOI: 10.1007/s12602-016-9217-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Meng F, Zhao H, Zhang C, Lu F, Bie X, Lu Z. Expression of a novel bacteriocin—the plantaricin Pln1—in Escherichia coli and its functional analysis. Protein Expr Purif 2016; 119:85-93. [DOI: 10.1016/j.pep.2015.11.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 11/03/2015] [Accepted: 11/09/2015] [Indexed: 10/22/2022]
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Milioni C, Martínez B, Degl’Innocenti S, Turchi B, Fratini F, Cerri D, Fischetti R. A novel bacteriocin produced by Lactobacillus plantarum LpU4 as a valuable candidate for biopreservation in artisanal raw milk cheese. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s13594-015-0230-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Probiotic potential of bacteriocin-producing Enterococcus hirae strain LD3 isolated from dosa batter. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1075-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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