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Miao C, Zhang Y, Liu G, Yang J, Yu K, Lv J, Liu R, Yao Z, Niu Y, Wang X, Wang Q. Multi-step strategies for synergistic treatment of urinary tract infections based on D-xylose-decorated antimicrobial peptide carbon dots. Biomaterials 2024; 308:122547. [PMID: 38537344 DOI: 10.1016/j.biomaterials.2024.122547] [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: 10/15/2023] [Revised: 03/15/2024] [Accepted: 03/20/2024] [Indexed: 05/03/2024]
Abstract
Urinary tract infections (UTIs) caused by Uropathogenic Escherichia coli (UPEC), often reoccur due to the formation of intracellular bacterial colonies (IBCs) and antibiotic resistance. Given the significance of YadC for UPEC infection in our previous study, we developed D-xylose-decorated ɛ-poly-L-lysine (εPL)-based carbon dots (D-xyl@εPLCDs) that can be traced, and employed multi-step approaches to elucidate the functional roles of D-xyl@εPLCDs in UPEC infection. Compared to undecorated particles, D-xyl@εPLCDs demonstrate YadC-dependent bacterial targeting and exhibit enhanced bactericidal activities both intracellularly and extracellularly. Moreover, pre-treatment of D-xyl@εPLCDs before infection blocked the subsequent adhesion and invasion of UPEC to bladder epithelial cells 5637. Increase of ROS production and innate immune responses were observed in bladder epithelial cells 5637 treated with D-xyl@εPLCDs. In addition, treatment of D-xyl@εPLCDs post-infection facilitated clearance of UPEC in the bladders of the UTI mouse model, and reduced ultimate number of neutrophils, macrophages and inflammatory responses raised by invaded bacteria. Collectively, we presented a comprehensive evaluating system to show that D-xyl@εPLCDs exhibits superior bactericidal effects against UPEC, making them a promising candidate for drug development in clinical UTI therapeutics.
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Affiliation(s)
- Chunhui Miao
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Yajie Zhang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Guowen Liu
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Jianming Yang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Kaiyuan Yu
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Junqiang Lv
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Ran Liu
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Zhi Yao
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China
| | - Yuanjie Niu
- The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, 300211, China; Tianjin Key Laboratory of Precision Medicine for Sex Hormones and Diseases (in Preparation), Tianjin, 300211, China.
| | - Xiaojuan Wang
- The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, 300211, China; Tianjin Key Laboratory of Precision Medicine for Sex Hormones and Diseases (in Preparation), Tianjin, 300211, China.
| | - Quan Wang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Institute of Immunology, State Key Laboratory of Experimental Hematology, The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical Epigenetics, Department of Immunology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, 300070, China; The Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, 300211, China; Tianjin Key Laboratory of Precision Medicine for Sex Hormones and Diseases (in Preparation), Tianjin, 300211, China.
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Shen S, Liu X, Huang J, Sun Y, Liu B, Song W, Meng L, Du M, Feng Q. Efficacy of a mouthwash containing ε-poly-L-lysine, funme peptides and domiphen in reducing halitosis and supragingival plaque: a randomized clinical trial. BMC Oral Health 2024; 24:525. [PMID: 38702623 PMCID: PMC11069150 DOI: 10.1186/s12903-024-04255-0] [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: 01/25/2024] [Accepted: 04/12/2024] [Indexed: 05/06/2024] Open
Abstract
OBJECTIVE To evaluate the antibacterial effectiveness of a combination of ε-poly-L-lysine (ε-PL), funme peptide (FP) as well as domiphen against oral pathogens, and assess the efficacy of a BOP® mouthwash supplemented with this combination in reducing halitosis and supragingival plaque in a clinical trial. MATERIALS AND METHODS The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of the compound against Fusobacterium nucleatum, Porphyromonas gingivalis, Streptococcus mutans, and Aggregatibacter actinomycetemcomitans were determined by the gradient dilution method. Subsequently, the CCK-8 assay was used to detect the toxicity of mouthwash on human gingival fibroblastst, and the effectiveness in reducing halitosis and supragingival plaque of the mouthwash supplemented with the combination was analyzed by a randomized, double-blind, parallel-controlled clinical trial. RESULTS The combination exhibited significant inhibitory effects on tested oral pathogens with the MIC < 1.56% (v/v) and the MBC < 3.13% (v/v), and the mouthwash containing this combination did not inhibit the viability of human gingival fibroblasts at the test concentrations. The clinical trial showed that the test group displayed notably lower volatile sulfur compounds (VSCs) at 0, 10, 24 h, and 7 d post-mouthwash (P < 0.05), compared with the baseline. After 7 days, the VSC levels of the and control groups were reduced by 50.27% and 32.12%, respectively, and notably cutting severe halitosis by 57.03% in the test group. Additionally, the Plaque Index (PLI) of the test and control group decreased by 54.55% and 8.38%, respectively, and there was a significant difference in PLI between the two groups after 7 days (P < 0.01). CONCLUSIONS The combination of ε-PL, FP and domiphen demonstrated potent inhibitory and bactericidal effects against the tested oral pathogens, and the newly formulated mouthwash added with the combination exhibited anti-dental plaque and anti-halitosis properties in a clinical trial and was safe. TRIAL REGISTRATION The randomized controlled clinical trial was registered on Chinese Clinical Trial Registry (No. ChiCTR2300073816, Date: 21/07/2023).
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Affiliation(s)
- Song Shen
- Department of Human Microbiome & Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China
| | - Xu Liu
- Shandong University-BOP Joint Oral Microbiome Laboratory, Shandong University, Jinan, 250012, China
| | - Jun Huang
- Shanghai Gemang Bio-Technology Co., Ltd, Shanghai, China
| | - Yi Sun
- Shanghai Gemang Bio-Technology Co., Ltd, Shanghai, China
| | - Bin Liu
- Shanghai Gemang Bio-Technology Co., Ltd, Shanghai, China
| | - Wenzhu Song
- Shandong University-BOP Joint Oral Microbiome Laboratory, Shandong University, Jinan, 250012, China
| | - Lei Meng
- Shandong University-BOP Joint Oral Microbiome Laboratory, Shandong University, Jinan, 250012, China
| | - Mi Du
- Department of Human Microbiome & Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China.
| | - Qiang Feng
- Department of Human Microbiome & Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, Shandong University, Jinan, China.
- Shandong University-BOP Joint Oral Microbiome Laboratory, Shandong University, Jinan, 250012, China.
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3
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Ioannou P, Baliou S, Kofteridis DP. Antimicrobial Peptides in Infectious Diseases and Beyond-A Narrative Review. Life (Basel) 2023; 13:1651. [PMID: 37629508 PMCID: PMC10455936 DOI: 10.3390/life13081651] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/27/2023] Open
Abstract
Despite recent medical research and clinical practice developments, the development of antimicrobial resistance (AMR) significantly limits therapeutics for infectious diseases. Thus, novel treatments for infectious diseases, especially in this era of increasing AMR, are urgently needed. There is ongoing research on non-classical therapies for infectious diseases utilizing alternative antimicrobial mechanisms to fight pathogens, such as bacteriophages or antimicrobial peptides (AMPs). AMPs are evolutionarily conserved molecules naturally produced by several organisms, such as plants, insects, marine organisms, and mammals, aiming to protect the host by fighting pathogenic microorganisms. There is ongoing research regarding developing AMPs for clinical use in infectious diseases. Moreover, AMPs have several other non-medical applications in the food industry, such as preservatives, animal husbandry, plant protection, and aquaculture. This review focuses on AMPs, their origins, biology, structure, mechanisms of action, non-medical applications, and clinical applications in infectious diseases.
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Affiliation(s)
- Petros Ioannou
- School of Medicine, University of Crete, 71003 Heraklion, Greece
- Internal Medicine, University Hospital of Heraklion, 71110 Heraklion, Greece
| | - Stella Baliou
- Internal Medicine, University Hospital of Heraklion, 71110 Heraklion, Greece
| | - Diamantis P. Kofteridis
- School of Medicine, University of Crete, 71003 Heraklion, Greece
- Internal Medicine, University Hospital of Heraklion, 71110 Heraklion, Greece
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Shahriari-Khalaji M, Li G, Liu L, Sattar M, Chen L, Zhong C, Hong FF. A poly-l-lysine-bonded TEMPO-oxidized bacterial nanocellulose-based antibacterial dressing for infected wound treatment. Carbohydr Polym 2022; 287:119266. [DOI: 10.1016/j.carbpol.2022.119266] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 01/03/2022] [Accepted: 02/16/2022] [Indexed: 12/17/2022]
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5
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Liu Y, Wang K, Pan L, Chen X. Improved Production of ε-Poly-L-Lysine in Streptomyces albulus Using Genome Shuffling and Its High-Yield Mechanism Analysis. Front Microbiol 2022; 13:923526. [PMID: 35711770 PMCID: PMC9195005 DOI: 10.3389/fmicb.2022.923526] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 05/09/2022] [Indexed: 11/29/2022] Open
Abstract
ε-Poly-L-lysine (ε-PL), a natural food preservative, has recently gained interest and mainly produced by Streptomyces albulus. Lacking of efficient breeding methods limit ε-PL production improving, knockout byproducts and increase of main product flux strategies as a logical solution to increase yield. However, removing byproduct formation and improving main product synthesis has seen limited success due to the genetic background of ε-PL producing organism is not clear. To overcome this limitation, random mutagenesis continues to be the best way towards improving strains for ε-PL production. Recent advances in Illumina sequencing opened new avenues to understand improved strains. In this work, we used genome shuffling on strains obtained by ribosome engineering to generate a better ε-PL producing strain. The mutant strain SG-86 produced 144.7% more ε-PL than the parent strain M-Z18. Except that SG-86 displayed obvious differences in morphology and ATP compared to parent strain M-Z18. Using Illumina sequencing, we mapped the genomic changes leading to the improved phenotype. Sequencing two strains showed that the genome of the mutant strain was about 2.1 M less than that of the parent strain, including a large number of metabolic pathways, secondary metabolic gene clusters, and gene deletions. In addition, there are many SNPs (single nucleotide polymorphisms) and InDels (insertions and deletions) in the mutant strain. Based on the results of data analysis, a mechanism of ε-PL overproduction in S. albulus SG-86 was preliminarily proposed. This study is of great significance for improving the fermentation performance and providing theoretical guidance for the metabolic engineering construction of ε-PL producing strains.
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Affiliation(s)
- Yongjuan Liu
- Shandong Provincial Key Laboratory of Synthetic Biology, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Shandong Energy Institute, Qingdao, China.,Qingdao New Energy Shandong Laboratory, Qingdao, China
| | - Kaifang Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Long Pan
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Xusheng Chen
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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Combination effect of epsilon-poly-L-lysine and antibiotics against common bacterial pathogens. J Antibiot (Tokyo) 2022; 75:354-359. [PMID: 35459856 DOI: 10.1038/s41429-022-00523-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 02/08/2022] [Accepted: 03/17/2022] [Indexed: 12/29/2022]
Abstract
Epsilon-poly-L-lysine (EPL) is an antimicrobial peptide with low mammalian toxicity; thus, it is commonly used as food preservative. Here, the capacity of EPL to improve the efficacy of the antibiotics ampicillin (AMP), gentamycin (GEN), tetracycline (TCN), and methicillin (MET) against four bacterial pathogens, namely Pseudomonas aeruginosa PAO1, Klebsiella pneumoniae CG43, MET-sensitive Staphylococcus aureus ATCC 25923 (MSSA), and MET-resistant S. aureus ATCC 33591 (MRSA), was investigated. Some antibiotic-EPL combinations, i.e., AMP-EPL, GEN-EPL, and TCN-EPL, were particularly active against the pathogens through synergy, partial synergy, or additive effects. Additionally, MET-EPL displayed a partial synergistic effect against MRSA. GEN-EPL had the most powerful antimicrobial effect against MSSA: it eradicated the bacterium within an hour. Conversely, AMP-EPL and MET-EPL were the least potent combinations against MRSA, and TCN-EPL was least potent against K. pneumoniae; for these combinations, bactericidal activities occurred >10 h after initial treatments. All antibiotic-EPL treatments showed inhibitory activities against P. aeruginosa biofilm formation and enhanced preformed biofilm disruption in vitro. Similarly, the inhibition of biofilm formation on a porcine skin model was observed. Moreover, no significant cytotoxicity was detected for any antibiotic-EPL treatment in tests using Balb/3t3 fibroblasts. Given the rise in antibiotic-resistant bacteria, combining antibiotics with EPL may enhance antibiotic effectiveness, as shown in this study, while helping to avoid antimicrobial resistance.
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7
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Shahbazi M, Jäger H, Ettelaie R. Dual-Grafting of Microcrystalline Cellulose by Tea Polyphenols and Cationic ε-Polylysine to Tailor a Structured Antimicrobial Soy-Based Emulsion for 3D Printing. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21392-21405. [PMID: 35476424 PMCID: PMC9100494 DOI: 10.1021/acsami.1c19430] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 04/12/2022] [Indexed: 06/02/2023]
Abstract
An imperative processing way to produce 3D printed structures with enhanced multifunctional properties is printing inks in the form of a gel-like colloidal emulsion. The surface-modified microcrystalline cellulose (MCC) is an excipient of outstanding merit as a particulate emulsifier to manufacture a stable Pickering emulsion gel. The tuning of the MCC structure by cationic antimicrobial compounds, such as ε-polylysine (ε-PL), can offer a surface activity with an antimicrobial effect. However, the MCC/ε-PL lacks the appropriate emulsifying ability due to the development of electrostatic complexes. To overcome this challenge, (i) a surface-active MCC conjugate was synthesized by a sustainable dual-grafting technique (ii) to produce a highly stable therapeutic soy-based Pickering emulsion gel (iii) for potential application in 3D printing. In this regard, the tea polyphenols were initially introduced into MCC by the free-radical grafting method to decrease the charge density of anionic MCC. Then, the antioxidative MCC-g-tea polyphenols were reacted by ε-PL to produce a dual-grafted therapeutic MCC conjugate (micro-biosurfactant), stabilizing the soy-based emulsion system. The results indicated that the dual-grafted micro-biosurfactant formed a viscoelastic and thixotropic soy-based emulsion gel with reduced droplet size and long-term stability. Besides, there was an improvement in the interfacial adsorption features of soy-protein particles after micro-biosurfactant incorporation, where the interfacial pressure and surface dilatational viscoelastic moduli were enhanced. Consequently, it was revealed that the therapeutic Pickering emulsion gel was more suitable to manufacture a well-defined 3D architecture with high resolution and retained permanent deformation after unloading (i.e., a recoverable matrix). This work established that the modification of the MCC backbone by tea polyphenols and ε-PL advances its bioactive properties and emulsifying performance, which finally obtains a soy-based 3D printed structure with noteworthy mechanical strength.
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Affiliation(s)
- Mahdiyar Shahbazi
- Institute
of Food Technology, University of Natural
Resources and Life Sciences (BOKU), Muthgasse 18, Vienna 1190, Austria
| | - Henry Jäger
- Institute
of Food Technology, University of Natural
Resources and Life Sciences (BOKU), Muthgasse 18, Vienna 1190, Austria
| | - Rammile Ettelaie
- Food
Colloids and Bioprocessing Group, School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT, U.K.
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8
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Flynn J, Ryan A, Hudson SP. Synergistic antimicrobial interactions of nisin A with biopolymers and solubilising agents for oral drug delivery. Eur J Pharm Biopharm 2022; 171:29-38. [PMID: 34986413 DOI: 10.1016/j.ejpb.2021.12.010] [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] [Received: 11/16/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 01/15/2023]
Abstract
In order to develop bacteriocins, like the lantibiotic nisin A, into effective alternatives to existing antibiotics, their biophysical and physicochemical properties must first be assessed, from solubility, to susceptibility and absorption. It has been well established that formulation strategies at early drug development stages can be crucial for successful outcomes during preclinical and clinical phases of development, particularly for molecules with challenging physicochemical properties. This work elucidates the physicochemical challenges of nisin A in terms of its susceptibility to digestive enzymes like pepsin, pancreatin and proteinase K and its poor solubility at physiological pHs. Low solution concentrations, below the minimum inhibitory concentration against Staphylococcus aureus, were obtained in phosphate buffered saline (PBS, pH 7.4) and in fasted state simulated intestinal fluid (FaSSIF, pH 6.5), while higher solubilities at more acidic pH's such as in a KCl/HCl buffer (pH 2) and in fasted state simulated gastric fluid (FaSSGF, pH 1.6) are observed. Tween® 80 (0.01% v/v) significantly increased the solution concentration of nisin A in PBS (pH 7.4, 24 hr). Pancreatin doubled nisin A's solution concentration at pH 7.4 (PBS) but reduced its' inhibitory activity to ∼ 20%, and pepsin almost completely degraded nisin (after 24 hr), but retained activity at biologically relevant exposure times (∼ 15 min). Harnessing synergism between nisin A and either glycol chitosan or ε-poly lysine, combined with the solubilizing effect of Tween®, increased the antimicrobial activity of nisin A six fold in an in vitro oral administration model.
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Affiliation(s)
- James Flynn
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - Aoibhín Ryan
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland
| | - Sarah P Hudson
- SSPC, the Science Foundation Ireland Research Centre for Pharmaceuticals, Department of Chemical Sciences, Bernal Institute, University of Limerick, Ireland.
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Tiwari DK, Jha G, Tiwari M, Kerkar S, Das S, Gobre VV. Synergistic Antibacterial Potential and Cell Surface Topology Study of Carbon Nanodots and Tetracycline Against E. coli. Front Bioeng Biotechnol 2021; 9:626276. [PMID: 34676200 PMCID: PMC8524088 DOI: 10.3389/fbioe.2021.626276] [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: 11/05/2020] [Accepted: 08/05/2021] [Indexed: 11/24/2022] Open
Abstract
Increasing drugs and antibiotic resistance against pathogenic bacteria create the necessity to explore novel biocompatible antibacterial materials. This study investigated the antibacterial effect of carbon dot (C-dot) against E. coli and suggested an effective synergistic dose of tetracycline with C-dot, using mathematical modeling of antibacterial data. Colony count and growth curve studies clearly show an enhanced antibacterial activity against E. coli synergistically treated with C-dot and tetracycline, even at a concentration ten times lower than the minimum inhibitory concentration (MIC). The Richards model-fit of growth curve clearly showed an increase in doubling time, reduction in growth rate, and early stationary phase in the synergistic treatment with 42% reduction in the growth rate (μm) compared to the control. Morphological studies of E. coli synergistically treated with C-dot + tetracycline showed cell damage and deposition of C-dots on the bacterial cell membrane in scanning electron microscopy imaging. We further validated the topological changes, cell surface roughness, and significant changes in the height profile (ΔZ) with the control and treated E. coli cells viewed under an atomic force microscope. We confirmed that the effective antibacterial doses of C-dot and tetracycline were much lower than the MIC in a synergistic treatment.
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Affiliation(s)
- Dhermendra K Tiwari
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Gargi Jha
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Manisha Tiwari
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Savita Kerkar
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Suman Das
- Department of Biotechnology, Faculty of Life Sciences and Environment, Goa University, Taleigao plateau, Goa, India
| | - Vivekanand V Gobre
- School of Chemical Sciences, Goa University, Taleigao plateau, Goa, India
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Ucar Y, Ozogul Y, Durmuş M, Ozogul F. The effects of nisin on the growth of foodborne pathogens and biogenic amine formation: in vivo and in vitro studies. FOOD BIOSCI 2021. [DOI: 10.1016/j.fbio.2021.101266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Zhang QY, Yan ZB, Meng YM, Hong XY, Shao G, Ma JJ, Cheng XR, Liu J, Kang J, Fu CY. Antimicrobial peptides: mechanism of action, activity and clinical potential. Mil Med Res 2021; 8:48. [PMID: 34496967 PMCID: PMC8425997 DOI: 10.1186/s40779-021-00343-2] [Citation(s) in RCA: 196] [Impact Index Per Article: 65.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 08/30/2021] [Indexed: 12/15/2022] Open
Abstract
The management of bacterial infections is becoming a major clinical challenge due to the rapid evolution of antibiotic resistant bacteria. As an excellent candidate to overcome antibiotic resistance, antimicrobial peptides (AMPs) that are produced from the synthetic and natural sources demonstrate a broad-spectrum antimicrobial activity with the high specificity and low toxicity. These peptides possess distinctive structures and functions by employing sophisticated mechanisms of action. This comprehensive review provides a broad overview of AMPs from the origin, structural characteristics, mechanisms of action, biological activities to clinical applications. We finally discuss the strategies to optimize and develop AMP-based treatment as the potential antimicrobial and anticancer therapeutics.
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Affiliation(s)
- Qi-Yu Zhang
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Zhi-Bin Yan
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Yue-Ming Meng
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Xiang-Yu Hong
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Gang Shao
- Department of Oncology, The 903rd Hospital of PLA, Hangzhou, 310013, Zhejiang, China
| | - Jun-Jie Ma
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Xu-Rui Cheng
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China
| | - Jun Liu
- Department of Pharmaceutical Chemistry and the Cardiovascular Research Institute, University of California San Francisco, 555 Mission Bay Blvd. South, San Francisco, CA, 94158, USA
| | - Jian Kang
- Oncogenic Signaling and Growth Control Program, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, VIC, 3000, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Cai-Yun Fu
- Zhejiang Provincial Key Laboratory of Silkworm Bioreactor and Biomedicine, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, No. 928, Street 2, Xiasha Higher Education Zone, Hangzhou, 310018, Zhejiang, China.
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Meng Y, He X, Guo L, Xu Y, Fang S, Li Y, Chen J. Physicochemical and Antibacterial Properties of Sodium Tripolyphosphate/ε-Polylysine Complexes and their Application in Cooked Sausage. FOOD BIOPHYS 2021. [DOI: 10.1007/s11483-021-09675-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Hou W, Zhang Y, Zhang Y, Yue Q, Wang L, Min T, Wang H. Label-free proteomics study on Shewanella putrefaciens regulated by ε-poly-lysine treatment. J Appl Microbiol 2021; 131:791-800. [PMID: 33289172 DOI: 10.1111/jam.14954] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/09/2020] [Accepted: 11/26/2020] [Indexed: 01/19/2023]
Abstract
AIMS The purpose of this study was to investigate the regulatory mechanism of ε-PL on Shewanella putrefaciens. METHODS AND RESULTS Proteomics analysis of inhibitory effect of ε-PL against S. putrefaciens was performed by label-free quantitative assay based on high-resolution mass spectrometry (MS). Quantification of 2206 proteins was obtained with high confidence, and a total of 36 differentially expressed proteins (DEPs), with 10 and 26 proteins showing upregulation and downregulation, respectively, were identified. Upon Go functional enrichment, 11, 5 and 8 specific Go terms in biological processes, molecular functions and cellular components were identified, respectively. Six KEGG pathways, including 'ribosome', were significantly enriched. Among the ribosome pathway, there were seven DEPs and all of them were distributed on large and small subunits of ribosome. CONCLUSIONS The significant downregulation of proteins, large subunits of ribosomal proteins RP-L18, L30 and L27, small subunits ribosomal proteins S16 and S20, and RNA polymerase β' subunit protein rpoC were the critical action sites of ε-PL to inhibit S. putrefaciens growth. SIGNIFICANCE AND IMPACT OF THE STUDY Shewanella putrefaciens is one of the representative fish-spoilage bacteria regardless of fish type, and poses significant problems for the fish brewery. A better understanding of the antibacterial mechanism of ε-PL on S. putrefaciens could make important contributions to development of biological control strategies of these economically important pathogens.
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Affiliation(s)
- W Hou
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - Y Zhang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - Y Zhang
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - Q Yue
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - L Wang
- School of Biological and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - T Min
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
| | - H Wang
- School of Biological and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, Hubei, P.R. China
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14
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Martínez-Ramos AR, Ibarra-Sánchez LA, Amaya-Llano SL, Miller MJ. Evaluation of combinations of nisin, lauric arginate, and ε-polylysine to control Listeria monocytogenes in queso fresco. J Dairy Sci 2020; 103:11152-11162. [DOI: 10.3168/jds.2020-19001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 08/01/2020] [Indexed: 12/17/2022]
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15
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Tavakolian M, Munguia-Lopez JG, Valiei A, Islam MS, Kinsella JM, Tufenkji N, van de Ven TGM. Highly Absorbent Antibacterial and Biofilm-Disrupting Hydrogels from Cellulose for Wound Dressing Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:39991-40001. [PMID: 32794770 DOI: 10.1021/acsami.0c08784] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a carboxyl-modified cellulosic hydrogel was developed as the base material for wound dressings. ε-poly-l-lysine, a natural polyamide, was then covalently linked to the hydrogel through a bioconjugation reaction, which was confirmed by X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR). The antibacterial efficacy of the hydrogel was tested against two model bacteria, Staphylococcus aureus and Pseudomonas aeruginosa, two of the most commonly found bacteria in wound infections. Bacterial viability and biofilm formation after exposure of bacteria to the hydrogels were used as efficacy indicators. Live/Dead assay was used to measure the number of compromised bacteria using a confocal laser scanning microscope. The results show that the antibacterial hydrogel was able to kill approximately 99% of the exposed bacteria after 3 h of exposure. In addition, NIH/3T3 fibroblasts were used to study the biocompatibility of the developed hydrogels. Water-soluble tetrazolium salt (WST)-1 assay was used to measure the metabolic activity of the cells and Live/Dead assay was used to measure the viability of the cells after 24, 48, and 72 h. The developed antibacterial hydrogels are light weight, have a high water-uptake capacity, and show high biocompatibility with the model mammalian cells, which make them a promising candidate to be used for wound dressing applications.
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Affiliation(s)
- Mandana Tavakolian
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada
- Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, Quebec H3A 2A7, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montreal, Quebec H3A 2A7, Canada
| | - Jose G Munguia-Lopez
- Department of Bioengineering, McGill University, 3480 University Street, Montreal, Quebec H3A 0E9, Canada
- Faculty of Dentistry, McGill University, 3640 University Street, Montreal, Quebec H3A 0C7, Canada
| | - Amin Valiei
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montreal, Quebec H3A 2A7, Canada
| | - Md Shahidul Islam
- Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, Quebec H3A 2A7, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montreal, Quebec H3A 2A7, Canada
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
| | - Joseph M Kinsella
- Department of Bioengineering, McGill University, 3480 University Street, Montreal, Quebec H3A 0E9, Canada
- Department of Biomedical Engineering, McGill University, Montreal, Quebec H3A 2B4, Canada
| | - Nathalie Tufenkji
- Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Quebec H3A 0C5, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montreal, Quebec H3A 2A7, Canada
| | - Theo G M van de Ven
- Pulp and Paper Research Centre, McGill University, 3420 University Street, Montreal, Quebec H3A 2A7, Canada
- Quebec Centre for Advanced Materials (QCAM), 3420 University Street, Montreal, Quebec H3A 2A7, Canada
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, Quebec H3A 0B8, Canada
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16
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Antimicrobial activity of Epsilon-Poly-L-lysine against phytopathogenic bacteria. Sci Rep 2020; 10:11324. [PMID: 32647256 PMCID: PMC7347836 DOI: 10.1038/s41598-020-68262-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 05/05/2020] [Indexed: 02/06/2023] Open
Abstract
Antimicrobial peptides (AMPs) are components of immune defense in many organisms, including plants. They combat pathogens due to their antiviral, antifungal and antibacterial properties, and are considered potential therapeutic agents. An example of AMP is Epsilon-Poly-L-lysine (EPL), a polypeptide formed by ~ 25 lysine residues with known antimicrobial activity against several human microbial pathogens. EPL presents some advantages such as good water solubility, thermal stability, biodegradability, and low toxicity, being a candidate for the control of phytopathogens. Our aim was to evaluate the antimicrobial activity of EPL against four phytobacterial species spanning different classes within the Gram-negative phylum Proteobacteria: Agrobacterium tumefaciens (syn. Rhizobium radiobacter), Ralstonia solanacearum, Xanthomonas citri subsp. citri (X. citri), and Xanthomonas euvesicatoria. The minimum inhibitory concentration (MIC) of the peptide ranged from 80 μg/ml for X. citri to 600 μg/ml for R. solanacearum and X. euvesicatoria. Two hours of MIC exposure led to pathogen death due to cell lysis and was enough for pathogen clearance. The protective and curative effects of EPL were demonstrated on tomato plants inoculated with X. euvesicatoria. Plants showed less disease severity when sprayed with EPL solution, making it a promising natural product for the control of plant diseases caused by diverse Proteobacteria.
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17
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Sindi A, Badsha MB, Nielsen B, Ünlü G. Antimicrobial Activity of Six International Artisanal Kefirs Against Bacillus cereus, Listeria monocytogenes, Salmonella enterica serovar Enteritidis, and Staphylococcus aureus. Microorganisms 2020; 8:E849. [PMID: 32512951 PMCID: PMC7356263 DOI: 10.3390/microorganisms8060849] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 12/02/2022] Open
Abstract
Kefir, a fermented dairy beverage, exhibits antimicrobial activity due to many metabolic products, including bacteriocins, generated by lactic acid bacteria. In this study, the antimicrobial activities of artisanal kefir products from Fusion Tea (A), Britain (B), Ireland (I), Lithuania (L), the Caucuses region (C), and South Korea (K) were investigated against select foodborne pathogens. Listeria monocytogenes CWD 1198, Salmonella enterica serovar Enteritidis ATCC 13076, Staphylococcus aureus ATCC 25923, and Bacillus cereus ATCC 14579 were inhibited by artisanal kefirs made with kefir grains from diverse origins. Kefirs A, B, and I inhibited all bacterial indicator strains examined at varying levels, except Escherichia coli ATCC 12435 (non-pathogenic, negative control). Kefirs K, L, and C inhibited all indicator strains, except S. aureus ATCC 25923 and E. coli ATCC 12435. Bacteriocins present in artisanal kefirs were determined to be the main antimicrobials in all kefirs examined. Kefir-based antimicrobials are being proposed as promising natural biopreservatives as per the results of the study.
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Affiliation(s)
- Abrar Sindi
- School of Food Science, University of Idaho, 875 Perimeter Drive, MS 2312, Moscow, ID 83844-2312, USA; (A.S.); (B.N.)
| | - Md. Bahadur Badsha
- Institute for Modeling Collaboration and Innovation (IMCI), University of Idaho, 875 Perimeter Drive, MS 1122, Moscow, ID 83844-1122, USA;
| | - Barbara Nielsen
- School of Food Science, University of Idaho, 875 Perimeter Drive, MS 2312, Moscow, ID 83844-2312, USA; (A.S.); (B.N.)
| | - Gülhan Ünlü
- School of Food Science, University of Idaho, 875 Perimeter Drive, MS 2312, Moscow, ID 83844-2312, USA; (A.S.); (B.N.)
- School of Food Science, Washington State University, Pullman, WA 99164-6376, USA
- Department of Biological Engineering, University of Idaho, 875 Perimeter Drive, MS 2312, Moscow, ID 83844-0904, USA
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18
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Zhang Z, Huang Y, Guo X, Meng X, Wu H, Guo F, Zhang SA, Li D. Effects of chitosan combined with ε-polylysine coating on flavor and texture quality of Chinese shrimp during refrigerated storage. Food Sci Nutr 2020; 8:1480-1488. [PMID: 32180957 PMCID: PMC7063349 DOI: 10.1002/fsn3.1432] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 12/31/2019] [Indexed: 11/26/2022] Open
Abstract
We investigated the effects of chitosan (CH) combined with ε‐polylysine (ε‐PL) on the flavor and texture quality of Chinese shrimp refrigerated for 12 days. Shrimp samples were subjected to three preservation treatments (ε‐PL, CH, and CH + ε‐PL) and a control treatment. Sensory characteristics, total volatile basic nitrogen (TVB‐N), adenosine triphosphate (ATP)‐related compounds, K‐values, volatile components, and texture were regularly assessed. The results showed that the sensory characteristics were effectively maintained, the increases in TVB‐N, hypoxanthine, and K‐value were delayed, and the putrid compounds were reduced by coating, especially with the chitosan combined with ε‐polylysine. Treatment with chitosan combined with ε‐polylysine was also shown to be a more effective preservation method for maintaining the texture quality of Chinese shrimp compared to treatment with ε‐PL or CH alone. Therefore, this technique was demonstrated to be a promising method for maintaining the flavor and texture quality of Chinese shrimp during refrigerated storage.
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Affiliation(s)
- Zhen Zhang
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Yunpo Huang
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Xuesong Guo
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Xin Meng
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Handong Wu
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Fang Guo
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Shu-Ai Zhang
- College of Food Science and Engineering Jinzhou Medical University Jinzhou China
| | - Dandan Li
- College of Public Basic Sciences Jinzhou Medical University Jinzhou China
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19
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Comparative Evaluation of Combinatory Interaction between Endocannabinoid System Compounds and Poly-L-lysine against Streptococcus mutans Growth and Biofilm Formation. BIOMED RESEARCH INTERNATIONAL 2020; 2020:7258380. [PMID: 32076613 PMCID: PMC7013284 DOI: 10.1155/2020/7258380] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/09/2019] [Accepted: 01/11/2020] [Indexed: 12/14/2022]
Abstract
Endocannabinoid/endocannabinoid-like (EC/EC-like) are natural endogenous compounds which have been found to affect MRSA pathogenicity. Our previous studies showed that EC/EC-like was able to impair staphylococcal biofilm formation and maintenance as well as to alter biofilm-associated virulence factors. In the present study, we investigated the combinatory effect of the selected EC/EC-like with a natural antimicrobial agent, poly-L-lysine, on cariogenic bacteria Streptococcus mutans growth and biofilm formation. Among four tested EC/EC-like, only two, anandamide (AEA) and oleoylethanolamide (OEA), exhibited synergistic combinatory effect with poly-L-lysine against S. mutans. We attribute this distinct effect to differences in the fatty acid chain structure of the selected EC/EC-like compounds. Moreover, AEA exerted a specific antibiofilm mode of action against S. mutans by effecting total inhibition of biofilm formation while still allowing bacteria viability. Finally, we postulate that the presence of EC/EC-like and poly-L-lysine could enhance the permeability and efficacy of each other via hydrophobic and electrostatic interactions with the S. mutans membrane. In conclusion, we assume that a combination of endogenous natural compounds such as EC/EC-like and poly-L-lysine may benefit oral hygiene by preventing dental plaque.
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20
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Razavi R, Tajik H, Moradi M, Molaei R, Ezati P. Antimicrobial, microscopic and spectroscopic properties of cellulose paper coated with chitosan sol-gel solution formulated by epsilon-poly-l-lysine and its application in active food packaging. Carbohydr Res 2020; 489:107912. [PMID: 31978746 DOI: 10.1016/j.carres.2020.107912] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/05/2020] [Accepted: 01/15/2020] [Indexed: 02/07/2023]
Abstract
Cellulose paper-chitosan (CC) double-layer films containing epsilon-poly-l-lysine (ε-PL) (0.5 and 1% w/v) were developed. FTIR analysis showed a strong association between the ε-PL and CC film. Antimicrobial activity against Listeria monocytogenes was investigated both in vitro and in the chicken breast meat. The CC films without ε-PL showed no antimicrobial activity, while the addition of ε-PL induced significant (p < 0.05) effects. During the 28 days of storage at 4 °C, no significant difference was found on the anti-listeria activity of films. When storage temperature was raised from 4 to 22 °C, the antimicrobial activity was reduced. Films containing 1% ε-PL exhibited 1.5 log10 CFU/g reduction in L. monocytogenes population during 12 days storage of meat at 4 °C, while no significant reduction was found in CC films with 0.5% ε-PL (p > 0.05). This study revealed an antimicrobial activity for CC films impregnated with ε-PL, to control foodborne pathogens in meat.
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Affiliation(s)
- Roghayieh Razavi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, West Azarbaijan, Iran
| | - Hossein Tajik
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, West Azarbaijan, Iran
| | - Mehran Moradi
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, West Azarbaijan, Iran.
| | - Rahim Molaei
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, West Azarbaijan, Iran
| | - Parya Ezati
- Department of Food Hygiene and Quality Control, Faculty of Veterinary Medicine, Urmia University, Urmia, West Azarbaijan, Iran
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21
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Lv J, Meng Y, Shi Y, Li Y, Chen J, Sheng F. Properties of epsilon‐polylysine·HCl/high‐methoxyl pectin polyelectrolyte complexes and their commercial application. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14320] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ji‐Min Lv
- College of Biosystems Engineering and Food Science Zhejiang University Hangzhou People’s Republic of China
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
| | - Yue‐Cheng Meng
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
| | - Yu‐Gang Shi
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
| | - Yan‐Hua Li
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
| | - Jie Chen
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
| | - Fang Sheng
- School of Food Science and Biotechnology Zhejiang Gongshang University Hangzhou People’s Republic of China
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22
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Tuersuntuoheti T, Wang Z, Zheng Y, Wang S, Wang Z, Wu Y, Liang S, Li X, Zhang M. Study on the shelf life and quality characteristics of highland barley fresh noodles as affected by microwave treatment and food preservatives. Food Sci Nutr 2019; 7:2958-2967. [PMID: 31572589 PMCID: PMC6766552 DOI: 10.1002/fsn3.1151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 06/09/2019] [Accepted: 06/11/2019] [Indexed: 11/11/2022] Open
Abstract
In this work, the effect of microwave (MW), ε-poly-L-lysine (ε-PL), calcium propionate (CP), and their combinations on the shelf life and quality characteristics of highland barley fresh noodle (HBFN) was studied. Firstly, the mixed flour was treated by MW (800 W) for different time. Subsequently, HBFN was prepared by mixing flour and sterilized water with addition of 0.04% ε-PL combined with different concentrations of CP (0.025%, 0.020%, 0.015%) and stored at 25 ± 1°C. Changes of total plate count (TPC), moisture content, water state, textural properties, color, and pH in HBFN were monitored during storage. The results indicated that microwave treatment (40 s) provided 30% reduction of initial TPC of the flour without decline of noodle quality. Shelf life of HBFN treated with MW + ε-PL (0.04%) + CP (0.02%/0.025%) reached 80 and 88 hr, respectively, and had good edible qualities during storage.
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Affiliation(s)
- Tuohetisayipu Tuersuntuoheti
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Zhenhua Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Yanyan Zheng
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Shuai Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Ziyuan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Yan Wu
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Shan Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Xinping Li
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
| | - Min Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business UniversityBeijingChina
- Beijing Engineering and Technology Research Center of Food AdditivesBeijing Technology and Business UniversityBeijingChina
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23
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Kohli G, Jain G, Bisht A, Upadhyay A, Kumar A, Dabir S. Effect of non-thermal hurdles in shelf life enhancement of sugarcane juice. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2019.05.131] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Tuersuntuoheti T, Wang Z, Wang Z, Liang S, Li X, Zhang M. Review of the application of ε‐poly‐L‐lysine in improving food quality and preservation. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14153] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Tuohetisayipu Tuersuntuoheti
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
| | - Zhenhua Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
| | - Ziyuan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
| | - Shan Liang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
| | - Xinping Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
| | - Min Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business University Beijing China
- Beijing Engineering and Technology Research Center of Food Additives, Beijing Technology and Business University Beijing China
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25
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Dong X, Bond AE, Pan N, Coleman M, Tang Y, Sun YP, Yang L. Synergistic photoactivated antimicrobial effects of carbon dots combined with dye photosensitizers. Int J Nanomedicine 2018; 13:8025-8035. [PMID: 30568443 PMCID: PMC6267493 DOI: 10.2147/ijn.s183086] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Carbon quantum dots (CDots) have recently been reported as a new class of visible light activated antimicrobial nanomaterials. This study reports the synergistic photoactivated antimicrobial interactions of CDots with photosensitizers on bacterial cells. METHODS The antimicrobial effects of the CDots with surface passivation molecules 2,2'-(ethylenedioxy)bis(ethylamine) in combination with photosensitizer methylene blue (MB) or toluidine blue (TB) at various concentrations were evaluated against Escherichia coli cells with and without 1-hour visible light illumination. The broth microdilution checkerboard method and isobologram analysis were used for determining if synergistic effect existed between CDots and MB or TB. RESULTS The results showed that CDots alone at a concentration of 5 μg/mL did not display antimicrobial effects, 1 μg/mL MB alone only decreased 1.86 log of viable cell numbers, but the combination treatment with 5 μg/mL CDots combined with 1 μg/mL MB completely inhibited bacteria growth, resulted in 6.2 log viable cell number reduction, suggesting synergistic interaction between the two. The antimicrobial effects of CDots/TB combination exhibited similarly synergistic effects on E. coli cells. These synergistic effects between CDots and MB or TB were further confirmed using the checkerboard microdilution methods, where the fractional inhibitory concentration index value (0.5) and the isobologram analyses. The synergistic interactions were also correlated to the increased generation of intracellular reactive oxygen species in E. coli cells upon the combination treatments of CDots/MB or CDots/TB. CONCLUSION The study demonstrated the synergistic photoactivated antimicrobial effects of CDots in combination with other photosensitizers. Such synergistic effect may open new strategies for developing highly effective antimicrobial methods.
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Affiliation(s)
- Xiuli Dong
- Biomanufacturing Research Institute and Technology Enterprise, Department of Pharmaceutical Sciences, North Carolina Central University, Durham, NC, USA,
| | - Ambrose E Bond
- Biomanufacturing Research Institute and Technology Enterprise, Department of Pharmaceutical Sciences, North Carolina Central University, Durham, NC, USA,
| | - Nengyu Pan
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC, USA,
| | - Montrez Coleman
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC, USA,
| | - Yongan Tang
- Department of Mathematics and Physics, North Carolina Central University, Durham, NC, USA
| | - Ya-Ping Sun
- Department of Chemistry, Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC, USA,
| | - Liju Yang
- Biomanufacturing Research Institute and Technology Enterprise, Department of Pharmaceutical Sciences, North Carolina Central University, Durham, NC, USA,
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26
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Tan Z, Bo T, Guo F, Cui J, Jia S. Effects of ε-Poly-l-lysine on the cell wall of Saccharomyces cerevisiae and its involved antimicrobial mechanism. Int J Biol Macromol 2018; 118:2230-2236. [DOI: 10.1016/j.ijbiomac.2018.07.094] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/12/2018] [Accepted: 07/14/2018] [Indexed: 01/08/2023]
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27
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Lin L, Gu Y, Li C, Vittayapadung S, Cui H. Antibacterial mechanism of ε -Poly-lysine against Listeria monocytogenes and its application on cheese. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.03.025] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Zhang X, Shi C, Liu Z, Pan F, Meng R, Bu X, Xing H, Deng Y, Guo N, Yu L. Antibacterial activity and mode of action of ε-polylysine against Escherichia coli O157:H7. J Med Microbiol 2018; 67:838-845. [DOI: 10.1099/jmm.0.000729] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Xiaowei Zhang
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Ce Shi
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Zuojia Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China
| | - Fengguang Pan
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Rizeng Meng
- Jilin Entry–Exit Inspection and Quarantine Bureau, Changchun 130062, PR China
| | - Xiujuan Bu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Heqin Xing
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Yanhong Deng
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Na Guo
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
| | - Lu Yu
- Department of Food Quality and Safety, College of Food Science and Engineering, Jilin University, Changchun 130062, PR China
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Klangpetch W, Noma S. Inhibitory Effects of Nisin Combined with Plant-derived Antimicrobials on Pathogenic Bacteria and the Interaction with Complex Food Systems. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2018. [DOI: 10.3136/fstr.24.609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Wannaporn Klangpetch
- Department of Agro-Industry, Faculty of Agriculture Natural Resources and Environment, Naresuan University
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Kozak SM, Bobak Y, D'Amico DJ. Efficacy of Antimicrobials Applied Individually and in Combination for Controlling Listeria monocytogenes as Surface Contaminants on Queso Fresco. J Food Prot 2018; 81:46-53. [PMID: 29257729 DOI: 10.4315/0362-028x.jfp-17-279] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Outbreaks of listeriosis are continually attributed to the consumption of Hispanic-style soft cheeses contaminated with Listeria monocytogenes postpasteurization. Once contaminated, L. monocytogenes can grow rapidly in cheeses like Queso Fresco (QF) even when stored at refrigeration temperatures. Several antimicrobials, including acidified calcium sulfate with lactic acid (ACSL), ε-polylysine (EPL), hydrogen peroxide (HP), lauric arginate ethyl ester (LAE), and sodium caprylate (SC), have demonstrated antilisterial activity in food. The objectives of this study were to determine the efficacy of these antimicrobials used individually and in combination to control L. monocytogenes as surface contaminants on QF and to identify additive and synergistic interactions. Cheeses were surface inoculated at ∼4 log CFU/g, dipped in antimicrobial solutions, vacuum packaged, and then stored at 7°C for 35 days. L. monocytogenes counts were determined 24 h after application of the antimicrobials and then weekly throughout storage. Dip treatments in a 5% (v/v) HP solution reduced L. monocytogenes counts to <0.5 log CFU/g within 24 h with no increase in counts through day 35. Dip treatments in LAE at 2 and 5% alone and in combination with EPL at 10% produced initial reductions in pathogen counts (1.5 to 1.8 CFU/g) but did not inhibit pathogen growth compared with the sterile water control. Dip applications of ACSL at 25% also produced an initial ∼1.5-log reduction in L. monocytogenes counts followed by regrowth. Application of SC at 10% alone and in combination with either EPL or LAE inhibited growth to <1 log CFU/g through 21 days of storage. The combination of ACSL+SC worked synergistically to inhibit the growth of L. monocytogenes on QF to <1 log CFU/g through 35 days. These data indicate that HP alone and treatments containing EPL, LAE, or ACSL in combination with SC are promising postlethality treatments and process controls for L. monocytogenes on QF through a 21-day shelf life.
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Affiliation(s)
- Sarah M Kozak
- 1 Department of Animal Science, University of Connecticut, 302B Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, Storrs, Connecticut 06269-4163; and
| | - Yustyna Bobak
- 2 Department of Molecular and Cell Biology, University of Connecticut, 91 North Eagleville Road, U-3125, Storrs, Connecticut 06269-3125, USA
| | - Dennis J D'Amico
- 1 Department of Animal Science, University of Connecticut, 302B Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, Storrs, Connecticut 06269-4163; and
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31
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Luz C, Calpe J, Saladino F, Luciano FB, Fernandez‐Franzón M, Mañes J, Meca G. Antimicrobial packaging based on ɛ-polylysine bioactive film for the control of mycotoxigenic fungi in vitro and in bread. J FOOD PROCESS PRES 2018; 42:e13370. [PMID: 29456275 PMCID: PMC5811908 DOI: 10.1111/jfpp.13370] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 03/28/2017] [Accepted: 04/07/2017] [Indexed: 12/01/2022]
Abstract
ɛ-Poly-l-lysine (ɛ-PL) is a cationic peptide with a broad-spectrum antimicrobial activity. This study investigates the use of ɛ-PL as natural antimicrobial to inhibit fungal growth and to reduce aflatoxins (AFs) production. Antifungal activity of starch biofilms with different concentrations of ɛ-Poly-l-lysine (ɛ-PL) was determined in solid medium against Aspergillus parasiticus (AFs producer) and Penicillium expansum. Then, biofilms were tested as antimicrobial devices for the preservation of bread loaf inoculated with A. parasiticus CECT 2681 and P. expansum CECT 2278. Shelf life and AFs content were examined. Biofilms with concentrations of ɛ-PL less than 1.6 mg/cm2 showed no fungal growth inhibition in solid medium, while the antifungal activity of the films with greater than 1.6 mg/cm2 of ɛ-PL was dose dependent. The shelf life of bread inoculated with A. parasiticus was increased by 1 day with the use of films containing 1.6-6.5 mg ɛ-PL/cm2, while shelf life of bread tainted with P. expansum was increased by 3 day with 6.5 mg ɛ-PL/cm2. AFs production was greatly inhibited by ɛ-PL biofilms (93-100%). Thus, ɛ-PL biofilms could be potentially used as antimicrobial device during bread storage as a natural alternative to the synthetic preservatives. Practical applications Ɛ-Polylysin is a natural substance from microbial metabolism. Polylysine has a function to prevent a microbe from proliferating by ionic adsorption in the microbe. ɛ-polylysine has a wide antibacterial spectrum and has an obvious lethal effect on Gram-positive and Gram-negative bacteria, yeast, mold, viruses, etc. It has a good antibacterial effect on the Gram-negative bacteria E. coli and Salmonellae, which are difficult to control with other natural preservatives. ɛ-Polylysine has already been used generally as a food additive in Japan, Korea and other part of world. In the United States, FDA has recognized the polylysine as a GRAS material. Considered the positive results obtained in the study, this compound could be used for the production of antimicrobial biofilms, applied as separator slices in the loaf bread production, to prevent the growth of the mycotoxigenic fungi A. parasiticus and P. expansum, contributing to reduce the use of the synthetically preservatives in bakery industry and also of the negative impact that these compounds could generate on the health of the end users.
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Affiliation(s)
- C. Luz
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
| | - J. Calpe
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
| | - F. Saladino
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
| | - Fernando B. Luciano
- School of Life SciencesPontifícia Universidade Católica do ParanáCuritibaParanáBrasil
| | - M. Fernandez‐Franzón
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
| | - J. Mañes
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
| | - G. Meca
- Laboratory of Food Chemistry and Toxicology, Faculty of PharmacyUniversity of Valencia, Av. Vicent Andrés Estellés s/nBurjassot, 46100Spain
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Li H, Cui R, Peng L, Cai S, Li P, Lan T. Preparation of Antibacterial Cellulose Paper Using Layer-by-Layer Assembly for Cooked Beef Preservation at Ambient Temperature. Polymers (Basel) 2017; 10:E15. [PMID: 30966052 PMCID: PMC6414864 DOI: 10.3390/polym10010015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 12/11/2017] [Accepted: 12/20/2017] [Indexed: 11/16/2022] Open
Abstract
Positively-charged ε-poly(l-lysine) (ε-PL) and negatively-charged carboxymethyl cellulose (CMC) were alternately deposited on a cellulose paper surface by the layer-by-layer (LBL) assembly technique. The formation of ε-PL/CMC multilayers was confirmed by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectra (FTIR), and zeta potential measurement. The morphologies of the multilayer-modified cellulose paper were observed by scanning electron microscopy (SEM). The ε-PL/CMC multilayers effectively improved not only the antibacterial activity of cellulose paper against both Escherichia coli and Staphylococcus aureus, but also the cellulose paper tensile strength property. Cellulose paper modified with a (ε-PL/CMC)4.5 multilayer exhibited the strongest antibacterial activity, selected for preserving cooked beef for nine days at ambient temperature, could extend the shelf-life of beef for about three days compared with common commercial PE films. The prepared antibacterial paper did not show any evidence of the cytotoxic effect since it could not increase the cytoplasmic lactate dehydrogenase release from L-929 fibroblast cells in contact with the antibacterial paper, suggesting the possibility of utilization in food packaging field.
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Affiliation(s)
- Hui Li
- Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
| | - Rongqi Cui
- Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
| | - Lincai Peng
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Shengbao Cai
- Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
| | - Pan Li
- Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
| | - Tianqing Lan
- Research Institute of Food Safety, Kunming University of Science and Technology, Kunming 650600, China.
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Dong X, Awak MA, Tomlinson N, Tang Y, Sun YP, Yang L. Antibacterial effects of carbon dots in combination with other antimicrobial reagents. PLoS One 2017; 12:e0185324. [PMID: 28934346 PMCID: PMC5608398 DOI: 10.1371/journal.pone.0185324] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 09/11/2017] [Indexed: 12/13/2022] Open
Abstract
This study was designed to investigate the antimicrobial effects of CDots in combination with other antimicrobial reagents, including H2O2, Na2CO3, and AcOH (acetic acid). CDots were synthesized and passivated with 2,2'-(ethylenedioxy)bis(ethylamine) (EDA). The minimal inhibitory concentration (MIC) of CDots was 64 μg/mL on both Gram negative bacteria E.coli cells and Gram positive bacteria Bacillus subtilis cells. When CDots were combined with H2O2, antibacterial synergistic effects were observed based on the fractional inhibitory concentration (FIC) index, and further confirmed by an isobologram analysis and viable cell number counting methods. With the combination treatment of 10 μg/mL CDots with 8.82 mM H2O2, the viable E.coli cell numbers decreased 2.46 log, which was significant lower than the log reduction from 8.82 mM H2O2 (1.57 log) or 10 μg/mL CDots (0.14 log) treatment alone. However, the combination of CDots with Na2CO3 or AcOH did not show synergistic effects, instead, exhibiting indifference effects according to the FIC index. This study indicated that the combination of CDots with their synergistic antimicrobial reagents, such as H2O2, could reach the goal of inhibiting bacteria growth by using lower concentration of each individual chemical in the combination than using one chemical treatment alone, reduce the risks imposed on environmental health and the possibilities of the development of microbial resistances.
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Affiliation(s)
- Xiuli Dong
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
| | - Mohamad Al Awak
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
| | - Nicholas Tomlinson
- Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina, United States of America
| | - Yongan Tang
- Department of Mathematics and Physics, North Carolina Central University, Durham, North Carolina, United States of America
| | - Ya-Ping Sun
- Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, South Carolina, United States of America
| | - Liju Yang
- Biomanufacturing Research Institute and Technology Enterprise (BRITE), North Carolina Central University, Durham, North Carolina, United States of America
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Hou J, Li YQ, Wang ZS, Sun GJ, Mo HZ. Applicative effect of glycinin basic polypeptide in fresh wet noodles and antifungal characteristics. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.05.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Kozak SM, Margison KM, D'amico DJ. Synergistic Antimicrobial Combinations Inhibit and Inactivate Listeria monocytogenes in Neutral and Acidic Broth Systems. J Food Prot 2017; 80:1266-1272. [PMID: 28691884 DOI: 10.4315/0362-028x.jfp-17-035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The use of antimicrobial compounds can be an effective approach to control Listeria monocytogenes in ready-to-eat foods, but it can also be limited by cost, restrictions on concentrations in foods, and potential changes to organoleptic properties. Combinatorial approaches that produce additive or synergistic effects allow for reductions in individual antimicrobial concentrations while achieving the same level of control. The present study determined the MIC and MBC of an antimicrobial compound when used alone or in binary combinations against L. monocytogenes in growth media adjusted to pH values 7.4 and 5.5 and characterized interactions as synergistic, additive, or antagonistic. Inhibitory and bactericidal concentrations were defined as changes in L. monocytogenes counts of ≤1.0 or ≥3.0 log CFU/mL compared with the starting inoculum, respectively. Individually, lauric arginate (LAE), hydrogen peroxide (HP), and ε-polylysine (EPL) inhibited L. monocytogenes growth at the lowest concentrations when applied alone in broth adjusted to pH 7.4. Similarly, LAE, EPL, and HP had the lowest MBCs in broth adjusted to both pH levels. The inhibitory efficacy of both caprylic acid and sodium caprylate (SC) increased at the lower pH, with reductions in MICs of >98%. In total, 35 and 19 additive or synergistic inhibitory and bactericidal combinations were identified at pH values 7.4 and 5.5, respectively. Combinations of acidified calcium sulfate with lactic acid (ACSL) and SC were among the most synergistic inhibitory groupings at both pH levels, whereas EPL+LAE were the most effective bactericides at pH 7.4. Combinations of SC with EPL or ACSL were also among the most effective bactericides at pH 5.5. These data serve as a foundation for developing more effective antimicrobial approaches for the control of L. monocytogenes in foods with different pH levels.
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Affiliation(s)
- Sarah M Kozak
- 1 Department of Animal Science, 302B Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, University of Connecticut, Storrs, Connecticut 06269; and
| | - Kyle M Margison
- 2 School of Pharmacy, 69 North Eagleville Road, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Dennis J D'amico
- 1 Department of Animal Science, 302B Agricultural Biotechnology Laboratory, 1390 Storrs Road, U-4163, University of Connecticut, Storrs, Connecticut 06269; and
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Wang L, Tian F, Xu L, Tao M. Optimization of the Biological Preservative Formula for Penaeus vannamei by Response Surface Methodology. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2017. [DOI: 10.1080/10498850.2015.1122691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ling Wang
- Food Science and Technology College, Guangdong Ocean University, Zhanjiang, Guangdong, P.R. China
| | - Feng Tian
- Food Science and Technology College, Guangdong Ocean University, Zhanjiang, Guangdong, P.R. China
| | - Lu Xu
- Food Science and Technology College, Guangdong Ocean University, Zhanjiang, Guangdong, P.R. China
| | - Miaomiao Tao
- Food Science and Technology College, Guangdong Ocean University, Zhanjiang, Guangdong, P.R. China
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Zahi MR, El Hattab M, Liang H, Yuan Q. Enhancing the antimicrobial activity of d-limonene nanoemulsion with the inclusion of ε-polylysine. Food Chem 2016; 221:18-23. [PMID: 27979165 DOI: 10.1016/j.foodchem.2016.10.037] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 09/03/2016] [Accepted: 10/10/2016] [Indexed: 10/20/2022]
Abstract
The objective of this research was to investigate the synergism between ε-polylysine and d-limonene and develop a novel nanoemulsion system by merging the positive effect of these two antimicrobial agents. Results from the checkerboard method showed that ε-polylysine and d-limonene exhibit strong synergistic and useful additive effects against Escherichia coli, Staphylococcus aureus, Bacillus subtilis and Saccharomyces cerevisiae. In addition, d-limonene nanoemulsion with the inclusion of ε-polylysine was successfully prepared by high pressure homogenizer technology. Its antimicrobial efficiency was compared with pure d-limonene nanoemulsion by measuring the minimal inhibitory concentration, electronic microscope observation and the leakage of the intercellular constituents. The results demonstrated a wide improvement of the antimicrobial activity of d-limonene nanoemulsion following the inclusion of ε-polylysine. Overall, the current study may have a valuable contribution to make in developing a more efficient antimicrobial system in the food industry.
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Affiliation(s)
- Mohamed Reda Zahi
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China; Laboratory of Natural Products Chemistry and Biomolecules, University of Blida 1, BP 270 Blida, Algeria
| | - Mohamed El Hattab
- Laboratory of Natural Products Chemistry and Biomolecules, University of Blida 1, BP 270 Blida, Algeria
| | - Hao Liang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
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Santos MRE, Fonseca AC, Mendonça PV, Branco R, Serra AC, Morais PV, Coelho JFJ. Recent Developments in Antimicrobial Polymers: A Review. MATERIALS 2016; 9:ma9070599. [PMID: 28773721 PMCID: PMC5456892 DOI: 10.3390/ma9070599] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 07/01/2016] [Accepted: 07/14/2016] [Indexed: 12/12/2022]
Abstract
Antimicrobial polymers represent a very promising class of therapeutics with unique characteristics for fighting microbial infections. As the classic antibiotics exhibit an increasingly low capacity to effectively act on microorganisms, new solutions must be developed. The importance of this class of materials emerged from the uncontrolled use of antibiotics, which led to the advent of multidrug-resistant microbes, being nowadays one of the most serious public health problems. This review presents a critical discussion of the latest developments involving the use of different classes of antimicrobial polymers. The synthesis pathways used to afford macromolecules with antimicrobial properties, as well as the relationship between the structure and performance of these materials are discussed.
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Affiliation(s)
- Madson R E Santos
- CEMUC, Department of Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal.
| | - Ana C Fonseca
- CEMUC, Department of Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal.
| | - Patrícia V Mendonça
- CEMUC, Department of Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal.
| | - Rita Branco
- CEMUC, Department of Life Sciences, University of Coimbra, Coimbra 3001-401, Portugal.
| | - Arménio C Serra
- CEMUC, Department of Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal.
| | - Paula V Morais
- CEMUC, Department of Life Sciences, University of Coimbra, Coimbra 3001-401, Portugal.
| | - Jorge F J Coelho
- CEMUC, Department of Chemical Engineering, University of Coimbra, Coimbra 3030-790, Portugal.
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Shi C, Zhao X, Liu Z, Meng R, Chen X, Guo N. Antimicrobial, antioxidant, and antitumor activity of epsilon-poly-L-lysine and citral, alone or in combination. Food Nutr Res 2016; 60:31891. [PMID: 27312785 PMCID: PMC4911418 DOI: 10.3402/fnr.v60.31891] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 05/22/2016] [Accepted: 05/23/2016] [Indexed: 12/24/2022] Open
Abstract
Background Food safety is an important worldwide public health concern, and microbial contamination in foods not only leads to food deterioration and shelf life reduction but also results in economic losses and disease. Objective The main aim of the present study was to evaluate the effect of epsilon-poly-L-lysine (ε-PL) and citral combination against Escherichia coli O157:H7 (E. coli O157:H7) strains. The preliminary antioxidant and antitumor activities were also studied. Design Synergism is a positive interaction created when two compounds combine and exert an inhibitory effect that is greater than the sum of their individual effects. The synergistic antimicrobial effect of ε-PL and citral was studied using the checkerboard method against E. coli O157:H7. The minimal inhibitory concentration, time-kill, and scanning electron microscope assays were used to determine the antimicrobial activity of ε-PL and citral alone or in combination; 2,2-diphenyl-1-picrylhydrazyl-scavenging assay and western blotting were used in antioxidant activity assays; cell viability assay was carried out to finish preliminary antitumor test. Results Minimal inhibitory concentrations of ε-PL and citral resisted to the five E. coli O157:H7 strains were 2–4 µg/mL and 0.5–1 µg/mL, and the fractional inhibitory concentration indices were 0.25–0.375. The results of time-kill assay revealed that a stronger bactericidal effect in a laboratory medium might be exerted in the combination against E. coli O157:H7 than that in a food model. The compounds alone or in combination exhibited a potential 2,2-diphenyl-1-picrylhydrazyl radical–scavenging activity, and the expression of superoxide dismutase 1 and glutathione peroxidase 1 protein increased. The preliminary antitumor activity effect of the combination was better than ε-PL or citral alone. Conclusions These findings indicated that the combination of ε-PL and citral could not only be used as a promising naturally sourced food preservative but also be used in the pharmaceutical industry.
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Affiliation(s)
- Ce Shi
- Department of Food Quality and Safety, Jilin University, Changchun, P. R. China
| | - Xingchen Zhao
- Department of Food Quality and Safety, Jilin University, Changchun, P. R. China
| | - Zonghui Liu
- Department of Food Quality and Safety, Jilin University, Changchun, P. R. China
| | - Rizeng Meng
- Jilin Entry-Exit Inspection And Quarantine Bureau, Changchun, P. R. China
| | - Xiangrong Chen
- Department of Food Quality and Safety, Jilin University, Changchun, P. R. China
| | - Na Guo
- Department of Food Quality and Safety, Jilin University, Changchun, P. R. China;
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The Acid Tolerance Response Alters Membrane Fluidity and Induces Nisin Resistance in Listeria monocytogenes. Probiotics Antimicrob Proteins 2016; 1:130-5. [PMID: 26783167 DOI: 10.1007/s12602-009-9025-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
The ability of L. monocytogenes cells to adapt to a variety of stressors contributes to its growth in a wide range of foods. The present study examines the effect of acid and of the acid tolerance response (ATR) on membrane fluidity and on the organism's resistance to acid and to the bacteriocin nisin. When ATR was induced in wild-type cells, these cells also became resistant to nisin. ATR(+) cells also had lower membrane rigidities than control ATR(-) cells that had not been subjected to the acid tolerance response. However, cells that were genetically resistant to nisin did not show any significant (P < 0.05) change in rigidity when grown in the presence of nisin. These studies suggest that the use of acid and nisin for L. monocytogenes control in ready-to-eat foods may be compromised if cross-resistance emerges.
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Antibacterial Activity of Subtilosin Alone and Combined with Curcumin, Poly-Lysine and Zinc Lactate Against Listeria monocytogenes Strains. Probiotics Antimicrob Proteins 2016; 2:250-7. [PMID: 26781320 DOI: 10.1007/s12602-010-9042-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In this paper, the antibacterial effects of the Bacillus amyloliquefaciens-produced bacteriocin subtilosin, both alone and in combination with curcumin, ε-poly-L-lysine (poly-lysine), or zinc lactate, were examined against Listeria monocytogenes. Results indicated that subtilosin inhibits both of the studied bacterial strains, Scott A (wild-type, nisin sensitive) and NR30 (nisin resistant). However, L. monocytogenes Scott A was more sensitive to subtilosin and pure curcumin. In addition, subtilosin was more active at an acidic pH. Subtilosin in combination with encapsulated curcumin displayed partial synergy against L. monocytogenes ScottA. It also had synergistic activity against both L. monocytogenes Scott A and L. monocytogenes NR30 when combined with zinc lactate. Only an additive effect was observed for subtilosin when combined with non-encapsulated curcumin or poly-lysine against the mentioned strains. Thus, using the combination of subtilosin with curcumin, poly-lysine, or zinc lactate, a lower effective dose can be used to control L. monocytogenes infection. Our findings suggest that subtilosin could be used as alternative bacteriocin to nisin, providing an opportunity to use a novel natural and efficacious biopreservative against L. monocytogenes in food preservation. This is the first report on the effects of the combination of subtilosin with natural antimicrobials on L. monocytogenes.
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Turovskiy Y, Chikindas ML. Zinc Lactate and Sapindin Act Synergistically with Lactocin 160 Against Gardnerella vaginalis. Probiotics Antimicrob Proteins 2016; 3:144-9. [PMID: 21779311 DOI: 10.1007/s12602-011-9068-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Lactocin 160 is a vaginal probiotic-derived bacteriocin shown to selectively inhibit the growth of Gardenerella vaginalis and some other pathogens commonly associated with bacterial vaginosis. The natural origin of this peptide, its safety, and selective antimicrobial properties make it a promising candidate for successful treatment and prophylaxis of bacterial vaginosis (BV). This study evaluated interactions between lactocin 160 and four other natural antimicrobials in the ability to inhibit G. vaginalis. We report that zinc lactate and soapnut extract act synergistically with lactocin 160 against this pathogen and therefore have a potential to be successfully used as the components of the multiple-hurdle antimicrobial formulation for the treatment of BV.
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Affiliation(s)
- Yevgeniy Turovskiy
- School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ 08901-8520, USA
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Hyldgaard M, Meyer RL, Peng M, Hibberd AA, Fischer J, Sigmundsson A, Mygind T. Binary combination of epsilon-poly-l-lysine and isoeugenol affect progression of spoilage microbiota in fresh turkey meat, and delay onset of spoilage in Pseudomonas putida challenged meat. Int J Food Microbiol 2015; 215:131-42. [DOI: 10.1016/j.ijfoodmicro.2015.09.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2015] [Revised: 09/07/2015] [Accepted: 09/21/2015] [Indexed: 12/22/2022]
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Liu F, Liu M, Du L, Wang D, Geng Z, Zhang M, Sun C, Xu X, Zhu Y, Xu W. Synergistic Antibacterial Effect of the Combination of ε-Polylysine and Nisin against Enterococcus faecalis. J Food Prot 2015; 78:2200-6. [PMID: 26613915 DOI: 10.4315/0362-028x.jfp-15-220] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study evaluated the antibacterial effect of the combination of ε-polylysine (ε-PL) and nisin against Enterococcus faecalis strains. The combination of ε-PL and nisin showed synergistic antibacterial activity against three Enterococcus strains. Scanning electron microscopy and a membrane permeability assay revealed that the combined treatment with ε-PL and nisin synergistically damaged the cell morphology of E. faecalis strain R612Z1 cells. Both ε-PL and nisin can dissipate the transmembrane electric potential of E. faecalis R612Z1 cells, but these peptides did not affect the transmembrane pH gradient. The combination of ε-PL and nisin can produce a high reactive oxygen species level in E. faecalis R612Z1 cells. The results indicated that the uptake of ε-PL into cells was promoted through nisin and that the combination of ε-PL and nisin could produce a high reactive oxygen species level in E. faecalis R612Z1 cells, leading to cell growth inhibition.
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Affiliation(s)
- Fang Liu
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Mei Liu
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China; College of Food Science, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Lihui Du
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Nanjing 210046, People's Republic of China
| | - Daoying Wang
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Zhiming Geng
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Muhan Zhang
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Chong Sun
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Xiaoxi Xu
- College of Food Science, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Yongzhi Zhu
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
| | - Weimin Xu
- Institute of Agricultural Products Processing, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, People's Republic of China
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Li YQ, Sun XX, Feng JL, Mo HZ. Antibacterial activities and membrane permeability actions of glycinin basic peptide against Escherichia coli. INNOV FOOD SCI EMERG 2015. [DOI: 10.1016/j.ifset.2015.07.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Cavera VL, Arthur TD, Kashtanov D, Chikindas ML. Bacteriocins and their position in the next wave of conventional antibiotics. Int J Antimicrob Agents 2015; 46:494-501. [PMID: 26341839 DOI: 10.1016/j.ijantimicag.2015.07.011] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 07/10/2015] [Accepted: 07/15/2015] [Indexed: 12/13/2022]
Abstract
Micro-organisms are capable of producing a range of defence mechanisms, including antibiotics, bacteriocins, lytic agents, protein exotoxins, etc. Such mechanisms have been identified in nearly 99% of studied bacteria. The multiplicity and diversity of bacteriocins and the resultant effects of their interactions with targeted bacteria on microbial ecology has been thoroughly studied and remains an area of investigation attracting many researchers. However, the incorporation of bacteriocins into drug delivery systems used in conjunction with, or as potential alternatives to, conventional antibiotics is only a recent, although rapidly expanding, field. The extensive array of bacteriocins positions them as one of the most promising options in the next wave of antibiotics. The goal of this review was to explore bacteriocins as novel antimicrobials, alone and in combination with established antibiotics, and thus position them as a potential tool for addressing the current antibiotic crisis.
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Affiliation(s)
- Veronica L Cavera
- Department of Biochemistry and Microbiology, Rutgers State University, 76 Lipman Drive, New Brunswick, NJ 08901, USA
| | - Timothy D Arthur
- Department of Biochemistry and Microbiology, Rutgers State University, 76 Lipman Drive, New Brunswick, NJ 08901, USA
| | - Dimitri Kashtanov
- School of Environmental and Biological Sciences, Rutgers State University, 65 Dudley Road, New Brunswick, NJ 08901, USA
| | - Michael L Chikindas
- School of Environmental and Biological Sciences, Rutgers State University, 65 Dudley Road, New Brunswick, NJ 08901, USA.
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Cavera VL, Volski A, Chikindas ML. The Natural Antimicrobial Subtilosin A Synergizes with Lauramide Arginine Ethyl Ester (LAE), ε-Poly-l-lysine (Polylysine), Clindamycin Phosphate and Metronidazole, Against the Vaginal Pathogen Gardnerella vaginalis. Probiotics Antimicrob Proteins 2015; 7:164-71. [DOI: 10.1007/s12602-014-9183-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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The antimicrobial effects and synergistic antibacterial mechanism of the combination of ε-Polylysine and nisin against Bacillus subtilis. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.07.050] [Citation(s) in RCA: 109] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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50
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Abstract
Epsilon-poly-l-lysine (ε-PL) is a natural antimicrobial cationic peptide which is generally regarded as safe (GRAS) as a food preservative. Although its antimicrobial activity is well documented, its mechanism of action is only vaguely described. The aim of this study was to clarify ε-PL's mechanism of action using Escherichia coli and Listeria innocua as model organisms. We examined ε-PL's effect on cell morphology and membrane integrity and used an array of E. coli deletion mutants to study how specific outer membrane components affected the action of ε-PL. We furthermore studied its interaction with lipid bilayers using membrane models. In vitro cell studies indicated that divalent cations and the heptose I and II phosphate groups in the lipopolysaccharide layer of E. coli are critical for ε-PL's binding efficiency. ε-PL removed the lipopolysaccharide layer and affected cell morphology of E. coli, while L. innocua underwent minor morphological changes. Propidium iodide staining showed that ε-PL permeabilized the cytoplasmic membrane in both species, indicating the membrane as the site of attack. We compared the interaction with neutral or negatively charged membrane systems and showed that the interaction with ε-PL relied on negative charges on the membrane. Suspended membrane vesicles were disrupted by ε-PL, and a detergent-like disruption of E. coli membrane was confirmed by atomic force microscopy imaging of supported lipid bilayers. We hypothesize that ε-PL destabilizes membranes in a carpet-like mechanism by interacting with negatively charged phospholipid head groups, which displace divalent cations and enforce a negative curvature folding on membranes that leads to formation of vesicles/micelles.
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