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Li Y, Wang Y, Luo YL, Bai DQ, Zhang G, Wang JR, Wei H, Li S. Epinecidin-1 and lactic acid synergistically inhibit Aeromonas hydrophila through membrane disruption. Microb Pathog 2024; 196:106879. [PMID: 39218372 DOI: 10.1016/j.micpath.2024.106879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 08/04/2024] [Accepted: 08/21/2024] [Indexed: 09/04/2024]
Abstract
Epinecidin-1 (Epi-1) is an antimicrobial peptide originated from fish with various pharmacological activities but carries the risk of acquiring resistance with long-term use. In the present study, we use L-lactic acid to enhance the antibacterial activity of synthesized Epi-1 against the aquaculture and food pathogen Aeromonas hydrophila. The results showed that 5.5 mmol/L lactic acid increased the inhibitory and bactericidal activity of 25 μmol/L Epi-1 against two strains of A. hydrophila. The laser confocal images proved that lactic acid pre-treatment improved the attachment efficiency of Epi-1 in A.hydrophila cells. In addition, lactic acid enhanced the damaging effect of Epi-1 on the cell membrane of A. hydrophila, evidenced by releasing more nucleic acids, proteins, and transmembrane pH ingredients decrease and electromotive force dissipation. SEM images showed that compared with the single Epi-1 treatment, the co-treatment of Epi-1 and lactic acid caused more outer membrane vesicles (OMVs) and more severe cell deformation. These findings proved that lactic acid could enhance the efficiency of Epi-1 against A. hydrophila and shed light on new aspects to avoid resistance of pathogens against Epi-1.
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Affiliation(s)
- Yanzi Li
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China
| | - Yang Wang
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China; Tianjin Key Laboratory of Aqua-ecology and Aquaculture, 22 Jinjing Road, 300384, Tianjin, China.
| | - Yun-Long Luo
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China
| | - Dong-Qing Bai
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China; Tianjin Key Laboratory of Aqua-ecology and Aquaculture, 22 Jinjing Road, 300384, Tianjin, China.
| | - Guangchen Zhang
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China
| | - Jing-Ru Wang
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China; Tianjin Key Laboratory of Aqua-ecology and Aquaculture, 22 Jinjing Road, 300384, Tianjin, China
| | - Hongshuo Wei
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China
| | - Shufang Li
- College of Fisheries, Tianjin Agricultural University, 22 Jinjing Road, 300384, Tianjin, China
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Palaniyappan S, Sridhar A, Arumugam M, Ramasamy T. Bioactive Analysis of Antibacterial Efficacy and Antioxidant Potential of Aloe barbadensis Miller Leaf Extracts and Exploration of Secondary Metabolites Using GC-MS Profiling. Appl Biochem Biotechnol 2024; 196:729-773. [PMID: 37184725 DOI: 10.1007/s12010-023-04565-z] [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] [Accepted: 04/26/2023] [Indexed: 05/16/2023]
Abstract
Aloe barbadensis Miller (ABM) is a traditional medicinal plant all over the world. Numerous studies were conducted to exhibit its medicinal properties and most of them were concentrated on its metabolites against human pathogens. The current research work evaluates the attributes of different polar-based extracts (ethanol, methanol, ethyl acetate, acetone, hexane, and petroleum ether) of dried Aloe barbadensis leaf (ABL) to investigate its phytochemical constituents, antioxidant potential (DPPH, ABTS), phenolic, tannin, flavonoid contents, identification of bioactive compounds, and functional groups by gas chromatography-mass spectrometry (GC-MS) and fourier transform infrared spectroscopy (FT-IR) respectively, and comparing antibacterial efficacy against human pathogens, aquatic bacterial pathogens, and zoonotic bacteria associated with fish and human. The present results showed that the methanolic extract of ABL showed higher antioxidant activity (DPPH-59.73 ± 2.01%; ABTS-74.1 ± 1.29%), total phenolic (10.660 ± 1.242 mg GAE/g), tannin (7.158 ± 0.668 mg TAE/g), and flavonoid content (49.545 ± 1.928 µg QE/g) than that of other solvent extracts. Non-polar solvents hexane and petroleum ether exhibited lesser activity among the extracts. In the case of antibacterial activity, higher inhibition zone was recorded in methanol extract of ABL (25.00 ± 0.70 mm) against Aeromonas salmonicida. Variations in antibacterial activity were observed depending on solvents and extracts. In the current study, polar solvents revealed higher antibacterial activity when compared to the non-polar and the mid-polar solvents. Diverse crucial bioactive compounds were detected in GC-MS analysis. The vital compounds were hexadecanoic acid (30.69%) and 2-pentanone, 4-hydroxy-4-methyl (23.77%) which are responsible for higher antioxidant and antibacterial activity. Similar functional groups were identified in all the solvent extracts of ABL with slight variations in the FT-IR analysis. Polar-based solvent extraction influenced the elution of phytocompounds more than that of the other solvents used in this study. The obtained results suggested that the ABM could be an excellent source for antioxidant and antibacterial activities and can also serve as a potential source of effective bioactive compounds to combat human as well as aquatic pathogens.
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Affiliation(s)
- Sivagaami Palaniyappan
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - Arun Sridhar
- Immunology-Vaccinology, Department of Infectious and Parasitic Diseases, Fundamental and Applied Research for Animals & Health (FARAH), Faculty of Veterinary Medicine, University of Liège, 4000, Liège, Belgium
| | - Manikandan Arumugam
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India
| | - Thirumurugan Ramasamy
- Laboratory of Aquabiotics/Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, 620 024, Tamil Nadu, India.
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Yu W, Guo J, Liu Y, Xue X, Wang X, Wei L, Ma J. Potential Impact of Combined Inhibition by Bacteriocins and Chemical Substances of Foodborne Pathogenic and Spoilage Bacteria: A Review. Foods 2023; 12:3128. [PMID: 37628127 PMCID: PMC10453098 DOI: 10.3390/foods12163128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/11/2023] [Accepted: 08/18/2023] [Indexed: 08/27/2023] Open
Abstract
In recent years, food safety caused by foodborne pathogens and spoilage bacteria has become a major public health problem worldwide. Bacteriocins are a kind of antibacterial peptide synthesized by microbial ribosomes, and are widely used as food preservatives. However, when used individually bacteriocins may have limitations such as high cost of isolation and purification, narrow inhibitory spectrum, easy degradation by enzymes, and vulnerability to complex food environments. Numerous studies have demonstrated that co-treatment with bacteriocins and a variety of chemical substances can have synergistic antibacterial effects on spoilage microorganisms and foodborne pathogens, effectively prolonging the shelf life of food and ensuring food safety. Therefore, this paper systematically summarizes the synergistic bacteriostatic strategies of bacteriocins in combination with chemical substances such as essential oils, plant extracts, and organic acids. The impacts of bacteriocins when used individually and in combination with other chemical substances on different food substrates are clarified, and bacteriocin-chemical substance compositions that enhance antibacterial effectiveness and reduce the potential negative effects of chemical preservatives are highlighted and discussed. Combined treatments involving bacteriocins and different kinds of chemical substances are expected to be a promising new antibacterial method and to become widely used in both the food industry and biological medicine.
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Affiliation(s)
| | | | | | | | | | | | - Jiage Ma
- Key Laboratory of Dairy Science, Ministry of Education, College of Food Science, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, China; (W.Y.); (J.G.); (Y.L.); (X.X.); (X.W.); (L.W.)
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4
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Sharma H, Fidan H, Özogul F, Rocha JM. Recent development in the preservation effect of lactic acid bacteria and essential oils on chicken and seafood products. Front Microbiol 2022; 13:1092248. [PMID: 36620022 PMCID: PMC9816663 DOI: 10.3389/fmicb.2022.1092248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
Chicken and seafood are highly perishable owing to the higher moisture and unsaturated fatty acids content which make them more prone to oxidation and microbial growth. In order to preserve the nutritional quality and extend the shelf-life of such products, consumers now prefer chemical-free alternatives, such as lactic acid bacteria (LAB) and essential oils (EOs), which exert a bio-preservative effect as antimicrobial and antioxidant compounds. This review will provide in-depth information about the properties and main mechanisms of oxidation and microbial spoilage in chicken and seafood. Furthermore, the basic chemistry and mode of action of LAB and EOs will be discussed to shed light on their successful application in chicken and seafood products. Metabolites of LAB and EOs, either alone or in combination, inhibit or retard lipid oxidation and microbial growth by virtue of their principal constituents and bioactive compounds including phenolic compounds and organic acids (lactic acid, propionic acid, and acetic acid) and others. Therefore, the application of LAB and EOs is widely recognized to extend the shelf-life of chicken and seafood products naturally without altering their functional and physicochemical properties. However, the incorporation of any of these agents requires the optimization steps necessary to avoid undesirable sensory changes. In addition, toxicity risks associated with EOs also demand the regularization of an optimum dose for their inclusion in the products.
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Affiliation(s)
- Heena Sharma
- Food Technology Lab, Dairy Technology Division, ICAR-National Dairy Research Institute, Karnal, India
| | - Hafize Fidan
- Department of Tourism and Culinary Management, University of Food Technologies, Plovdiv, Bulgaria
| | - Fatih Özogul
- Department of Seafood Processing Technology, Faculty of Fisheries, Çukurova University, Adana, Türkiye
| | - João Miguel Rocha
- LEPABE – Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Porto, Portugal,ALiCE – Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Porto, Portugal,*Correspondence: João Miguel Rocha,
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5
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Souza LV, Martins E, Moreira IMFB, de Carvalho AF. Strategies for the Development of Bioprotective Cultures in Food Preservation. Int J Microbiol 2022; 2022:6264170. [PMID: 37645592 PMCID: PMC10462446 DOI: 10.1155/2022/6264170] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/11/2022] [Accepted: 11/28/2022] [Indexed: 08/31/2023] Open
Abstract
Consumers worldwide are increasingly demanding food with fewer ingredients, preferably without chemical additives. The trend called "Clean Label" has stimulated the development and commercialization of new types of bioprotective bacterial cultures. These bacteria are not considered new, and several cultures have been available on the market. Additionally, new bioprotective bacteria are being identified to service the clean label trend, extend the shelf life, and, mainly, improve the food safety of food. In this context, the lactic acid bacteria (LAB) have been extensively prospected as a bioprotective culture, as they have a long history in food production and their antimicrobial activity against spoilage and pathogenic microorganisms is well established. However, to make LAB cultures available in the market is not that easy, the strains should be characterized phenotypically and genotypically, and studies of safety and technological application are necessary to validate their bioprotection performance. Thus, this review presents information on the bioprotection mechanisms developed by LAB in foods and describes the main strategies used to identify and characterize bioprotective LAB with potential application in the food industry.
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Affiliation(s)
- Luana Virgínia Souza
- Inovaleite—Department of Food Technology, Federal University of Viçosa (Universidade Federal de Viçosa) (UFV), Avenida Peter Henry Rolfs, s/n—Campus Universitário, Viçosa, MG 36570-900, Brazil
| | - Evandro Martins
- Inovaleite—Department of Food Technology, Federal University of Viçosa (Universidade Federal de Viçosa) (UFV), Avenida Peter Henry Rolfs, s/n—Campus Universitário, Viçosa, MG 36570-900, Brazil
| | - Isabella Maria Fernandes Botelho Moreira
- Inovaleite—Department of Food Technology, Federal University of Viçosa (Universidade Federal de Viçosa) (UFV), Avenida Peter Henry Rolfs, s/n—Campus Universitário, Viçosa, MG 36570-900, Brazil
| | - Antônio Fernandes de Carvalho
- Inovaleite—Department of Food Technology, Federal University of Viçosa (Universidade Federal de Viçosa) (UFV), Avenida Peter Henry Rolfs, s/n—Campus Universitário, Viçosa, MG 36570-900, Brazil
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Zhang D, Qiang R, Zhou Z, Pan Y, Yu S, Yuan W, Cheng J, Wang J, Zhao D, Zhu J, Yang Z. Biocontrol and Action Mechanism of Bacillus subtilis Lipopeptides' Fengycins Against Alternaria solani in Potato as Assessed by a Transcriptome Analysis. Front Microbiol 2022; 13:861113. [PMID: 35633712 PMCID: PMC9130778 DOI: 10.3389/fmicb.2022.861113] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/14/2022] [Indexed: 11/13/2022] Open
Abstract
Alternaria solani is an airborne fungus and the primary causal agent of potato early blight worldwide. No available fungicides that are both effective and environmentally friendly are usable to control this fungus. Therefore, biological control is a potential approach for its suppression. In this study, Bacillus subtilis strain ZD01's fermentation broth strongly reduced A. solani pathogenicity under greenhouse conditions. The effects of strain ZD01's secondary metabolites on A. solani were investigated. The exposure of A. solani hyphae to the supernatant resulted in swelling and swollen sacs, and the ZD01 supernatant reduced A. solani conidial germination significantly. Matrix-assisted laser desorption/ionization time of flight mass spectrometry and pure product tests revealed that fengycins were the main antifungal lipopeptide substances. To elucidate the molecular mechanism of the fengycins' biological control, RNA sequencing analyses were performed. A transcriptome analysis revealed that 304 and 522 genes in A. solani were differentially expressed after 2-h and 6-h fengycin treatments, respectively. These genes were respectively mapped to 53 and 57 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. In addition, the most enriched KEGG pathway analysis indicated that the inhibitory mechanisms of fengycins against A. solani regulated the expression of genes related to cell wall, cell membrane, transport, energy process, protein synthesis and genetic information. In particular, cell wall and cell membrane metabolism were the main processes affected by fengycin stress. Scanning and transmission electron microscope results revealed hyphal enlargement and a wide range of abnormalities in A. solani cells after exposure to fengycins. Furthermore, fengycins induced chitin synthesis in treated cells, and also caused the capture of cellular fluorescent green labeling and the release of adenosine triphosphate (ATP) from outer membranes of A. solani cells, which may enhance the fengycins ability to alter cell membrane permeability. Thus, this study increases the transcriptome data resources available and supplies a molecular framework for B. subtilis ZD01 inhibition of A. solani HWC-168 through various mechanisms, especially damaging A. solani cell walls and membranes. The transcriptomic insights may lead to an effective control strategy for potato early blight.
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Affiliation(s)
- Dai Zhang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Ran Qiang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Zhijun Zhou
- Practice and Training Center, Hebei Agricultural University, Baoding, China
| | - Yang Pan
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Shuiqing Yu
- Hebei Pingquan Edible Fungi Industry Technology Research Institute, Chengde, China
| | - Wei Yuan
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Jianing Cheng
- Agricultural Business Training and Entrepreneurship Center, Hebei Agricultural University, Baoding, China
| | - Jinhui Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Dongmei Zhao
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Jiehua Zhu
- College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Zhihui Yang
- College of Plant Protection, Hebei Agricultural University, Baoding, China
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Xiang L, Ying Z, Xue M, Xiaoxian P, Xiaorong L, Chunyang L, Yu W, Mingcheng L, Binxian L. A novel Lactobacillus bulgaricus isolate can maintain the intestinal health, improve the growth performance and reduce the colonization of E. coli O157:H7 in broilers. Br Poult Sci 2022; 63:621-632. [PMID: 35383527 DOI: 10.1080/00071668.2022.2062220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
1. This study aimed at the effects of a novel Lactobacillus bulgaricus (L. bulgaricus) strain and Enterohemorrhagic Escherichia coli (E. coli) O157: H7 on intestinal flora and growth performance of broilers, and the protective effect of L. bulgaricus on broilers in challenged experiment by E. coli O157: H7.2. In vitro bacteriostatic test showed that the cell-free supernatant (CFS) of L. bulgaricus isolate had obvious inhibitory effect on E. coli O157: H7.3. Eighty 1-day-old male broilers were randomly assigned into 4 treatment groups with 4 replicate per treatment. All group received basic diet in addition to the specific treatments: NC group, gavage with normal saline; In LBP group, gavage with L. bulgaricus isolate (1×109 CFU/mL) during the whole process, and challenged with E. coli O157: H7 (3×109 CFU/mL); EC group, gavage with E. coli O157: H7 (3×109 CFU/mL); LB Group, gavage with L. bulgaricus isolate. At the age of 21 days, broilers were weighed and feed conversion ratio (FCR) was calculated. Cecum and cecal contents, ileum and feces samples were taken after slaughter.4. The challenge of E. coli O157: H7 resulted in an increase in TLR-4, NF-κB and IL-8 mRNA in cecal tissue, a decrease in Villus: crypt ratio in ileum, a decrease in overall diversity of intestinal microflora and a poor FCR.5. The L. bulgaricus isolate decreased the mRNA expression of TLR-4, NF-κB and IL-8 induced by E. coli O157: H7, reduced the content of E. coli O157: H7 in the cecum of broilers, increased the Villus: crypt ratio, increased the abundance of beneficial bacteria and overall diversity of intestinal microflora, made good FCR.6. The L. bulgaricus isolate can maintain the intestinal health, improve the growth performance of broilers and reduce the colonization of E. coli O157:H7 in the cecum.
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Affiliation(s)
- Li Xiang
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Zhang Ying
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Meng Xue
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Pei Xiaoxian
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Liu Xiaorong
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Lan Chunyang
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Wang Yu
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Li Mingcheng
- School of Laboratory Medicine, Beihua University, Jilin, Jilin 132013, China
| | - Li Binxian
- Dept. of Clinical Microbiology, Associated Hospital, Beihua University, Jilin, Jilin 132013, China
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8
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Zhang J, Gu S, Zhang T, Wu Y, Ma J, Zhao L, Li X, Zhang J. Characterization and antibacterial modes of action of bacteriocins from Bacillus coagulans CGMCC 9951 against Listeria monocytogenes. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113272] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Wang Y, Wei Y, Shang N, Li P. Synergistic Inhibition of Plantaricin E/F and Lactic Acid Against Aeromonas hydrophila LPL-1 Reveals the Novel Potential of Class IIb Bacteriocin. Front Microbiol 2022; 13:774184. [PMID: 35242114 PMCID: PMC8886044 DOI: 10.3389/fmicb.2022.774184] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 01/04/2022] [Indexed: 01/15/2023] Open
Abstract
Plantaricin E/F (PlnEF) is a pair of two-component class IIb bacteriocin produced by lactic acid bacteria. PlnEF commonly displays potent antimicrobial activity against certain Gram-positive organisms. In this study, we investigated the synergistic activity of PlnEF combined with lactic acid against Gram-negative food and aquaculture potential pathogen Aeromonas hydrophila LPL-1, which is naturally resistant to PlnEF. We applied SDS-PAGE, wavelength-scanning, laser confocal microscopy, flow cytometer, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and two-dimensional electrophoresis to investigate their synergistic inhibitory activities. The results showed that L-lactic acid drove the release of LPS from A. hydrophila, making it possible for PlnEF to contact the inner cell membrane of A. hydrophila. Besides, co-treatment of lactic acid and PlnEF caused severe morphological and intracellular changes of A. hydrophila, including blebs on the cell surface, abnormal cell elongation, inner membrane disruption, pore-forming through the outer and inner membrane, coagulation of the cytoplasm, and structural transformation of DNA. Protein profile analysis revealed that combined treatment of lactic acid and PlnEF inhibited the energy metabolism, protein synthesis, protein folding, and DNA replication in A. hydrophila. These findings proved that PlnEF combined with lactic acid was efficient against A. hydrophila and shed light on bacteriocin’s potential and a new inhibition mechanism against A. hydrophila.
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Affiliation(s)
- Yang Wang
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Tianjin Key Laboratory of Aqua-Ecology and Aquaculture College of Fisheries, Tianjin Agricultural University, Tianjin, China
| | - Yunlu Wei
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, China
| | - Nan Shang
- College of Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China
| | - Pinglan Li
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, China
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Bacteriocin-Based Synergetic Consortia: a Promising Strategy to Enhance Antimicrobial Activity and Broaden the Spectrum of Inhibition. Microbiol Spectr 2022; 10:e0040621. [PMID: 35170996 PMCID: PMC8849083 DOI: 10.1128/spectrum.00406-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Bacteria-derived natural antimicrobial compounds such as bacteriocins, reruterin, and organic acids have recently received substantial attention as food preservatives or therapeutic alternatives in human or animal sectors. This study aimed to evaluate the antimicrobial activity of different bacteria-derived antimicrobials, alone or in combination, against a large panel of Gram-negative and Gram-positive bacteria. Bacteriocins, including microcin J25, pediocin PA-1, nisin Z, and reuterin, were investigated alone or in combination with lactic acid and citric acid, using a checkerboard assay. Concentrations were selected based on predetermined MICs against Salmonella enterica subsp. enterica serovar Newport ATCC 6962 and Listeria ivanovii HPB28 as Gram-negative and Gram-positive indicator strains, respectively. The results demonstrated that the combination of microcin J25 + citric acid + lactic acid; microcin J25 + reuterin + citric acid; and microcin J25 + reuterin + lactic acid tested against S. Newport ATCC 6962 showed synergistic effects (FIC index = 0.5). Moreover, a combination of pediocin PA-1 + citric acid + lactic acid; and reuterin + citric acid + lactic acid against L. ivanovii HPB28 showed a partially synergistic interactions (FIC index = 0.75). Nisin Z exerted a partially synergistic effect in combination with acids (FIC index = 0.625 -0.75), whereas when it was combined with reuterin or pediocin PA-1, it showed additive effects (FIC index = 1) against L. ivanovii HPB28. The inhibitory activity of synergetic consortia were tested against a large panel of Gram-positive and Gram-negative bacteria. According to our results, combining different antimicrobials with different mechanisms of action led to higher potency and a broad spectrum of inhibition, including multidrug-resistance pathogens. IMPORTANCE Reuterin and bacteriocins, including microcin J25, pediocin PA-1, nisin were produced and purified with >90% purity. Using the broth-based checkerboard assay the interaction between these compounds (synergetic, additive, or antagonistic) was assessed. By combining different natural antimicrobials with different modes of action and structure (reuteirn, microcin J25, pediocin PA-1, and organic acids), we successfully developed five different synergetic consortia with improved antimicrobial activity and a broad spectrum of inhibition. These consortia were shown to be effective against a large panel of pathogenic and spoilage microorganisms as well as clinically important multidrug-resistance bacteria. Moreover, because the lower concentrations of bacteriocins and reuterin are used in the synergetic consortia, there is a limited risk of toxicity and resistance development for these compounds.
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11
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Wei MP, Yu H, Guo YH, Cheng YL, Xie YF, Yao WR. Potent in vitro synergistic antibacterial activity of natural amphiphilic Sapindoside A and B against Cutibacterium acnes with destructive effect on bacterial membrane. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2021; 1863:183699. [PMID: 34297983 DOI: 10.1016/j.bbamem.2021.183699] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/07/2021] [Accepted: 07/14/2021] [Indexed: 11/28/2022]
Abstract
Sapindus saponins are obtained from the outer bark of Sapindus mukorossi Gaertn. (S. mukorossi), and they have become an interesting subject in the search for new anti-acne agents without resistance. This study aimed to screen the synergistic antibacterial combination from Sapindus saponins and investigated the synergistic antibacterial action via targeting the cell membrane of Cutibacterium acnes (C. acnes) to reduce the effective dose. The combination of Sapindoside A and B (SAB) was obtained with synergistic activity against C. acnes. SAB led to the leakage of ions and disturbed the membrane morphology of C. acnes. The spectral features of cell membrane composition showed obvious changes based on Raman spectroscopy, and changes in membrane protein microenvironment were also observed by fluorescence spectroscopy. Among the above results, the contribution of Sapindoside A was greater than that of Sapindoside B to the synergistic combination of SAB. Furthermore, molecular docking demonstrated that Sapindoside A interacted with penicillin-binding protein 2, playing an important role in peptidoglycan synthesis for the cross wall, and showed a higher binding score than Sapindoside B, further indicating that the greater contribution in the synergistic action of SAB on membrane proteins. Collectively, these results showed that the synergistic antibacterial action of SAB against C. acnes could be achieved by attacking cell membrane, and Sapindoside A played a major role, suggesting that SAB has the potential to be the natural anti-acne agent additive in the cosmetic industry.
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Affiliation(s)
- Min-Ping Wei
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Hang Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Ya-Hui Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yu-Liang Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Yun-Fei Xie
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China
| | - Wei-Rong Yao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu Province, China; Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, No. 1800 Lihu Avenue, Wuxi 214122, Jiangsu Province, China.
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Meng DM, Sun SN, Shi LY, Cheng L, Fan ZC. Application of antimicrobial peptide mytichitin-CB in pork preservation during cold storage. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108041] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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