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Arellano K, Lim J, Bucheli JEV, Park H, Todorov SD, Holzapfel WH. Identification of safe putative probiotics from various food products. Folia Microbiol (Praha) 2024:10.1007/s12223-024-01142-7. [PMID: 38376735 DOI: 10.1007/s12223-024-01142-7] [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: 07/30/2023] [Accepted: 01/25/2024] [Indexed: 02/21/2024]
Abstract
The objective of this study was to isolate, identify, and assess the safety and functionality in vitro of putative probiotic bacterial strains. Isolation procedures were based on standard methods using elective and selective media. The isolates were identified by comparative 16S rRNA sequencing analysis while their safety was determined according to the safety tests recommended by the FAO/WHO such as antibiotic resistance, hemolysin, and biogenic amine production. Most of the isolates did not pass the in vitro safety tests; therefore, only Lactiplantibacillus plantarum (from ant intestine and cheese), Lacticaseibacillus paracasei (from goat milk and kimchi), Enterococcus faecium (from chili doenjang and vegetables with kimchi ingredients), Limosilactobacillus fermentum (from saliva), and Companilactobacillus alimentarius (from kimchi) were identified and selected for further studies. The isolates were further differentiated by rep-PCR and identified to the strain level by genotypic (16S rRNA) and phenotypic (Gen III) approaches. Subsequently, the strain tolerance to acid and bile was evaluated resulting in good viability after simulated gastrointestinal tract passage. Adhesion to mucin in vitro and the presence of mub, mapA, and ef-tu genes confirmed the adhesive potential of the strains and the results of features associated with adhesion such as hydrophobicity and zeta potential extended the insights. This study reflects the importance of fermented and non-fermented food products as a promising source of lactic acid bacteria with potential probiotic properties. Additionally, it aims to highlight the challenges associated with the selection of safe strains, which often fail in the in vitro tests, thus hindering the possibilities of "uncovering" novel and safe probiotic strains.
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Affiliation(s)
- Karina Arellano
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
- Laboratory of Infection Oncology, Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel, University Hospital Schleswig Holstein, Schwanenweg 20, 24105 Kiel, Germany
| | - Juwhan Lim
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Jorge Enrique Vazquez Bucheli
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Haryung Park
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea
| | - Svetoslav Dimitrov Todorov
- ProBacLab, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea.
- ProBacLab, Laboratório de Microbiologia de Alimentos, Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- Food Research Center (FoRC), Departamento de Alimentos e Nutrição Experimental, Faculdade de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
- CISAS - Center for Research and Development in Agrifood Systems and Sustainability, Escola Superior de Tecnologia e Gestão, Instituto Politécnico de Viana do Castelo, Viana do Castelo, Portugal.
| | - Wilhelm Heinrich Holzapfel
- Human Effective Microbes, Department of Advanced Convergence, Handong Global University, Pohang 37554, Gyeongbuk, South Korea.
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Salas-Tovar JA, Escobedo-García S, Olivas GI, Acosta-Muñiz CH, Harte F, Sepulveda DR. The MATH test. A three-phase assay? FEMS Microbiol Lett 2024; 371:fnae045. [PMID: 38866708 DOI: 10.1093/femsle/fnae045] [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: 01/16/2024] [Revised: 05/09/2024] [Accepted: 06/11/2024] [Indexed: 06/14/2024] Open
Abstract
This study aimed to investigating the possible interference caused by glass test tubes on the quantification of bacterial adhesion to hydrocarbons by the MATH test. The adhesion of four bacteria to hexadecane and to glass test tubes was evaluated employing different suspending polar phases. The role of the ionic strength of the polar phase regarding adhesion to glassware was investigated. Within the conditions studied, Gram-positive bacteria adhered to both the test tube and the hydrocarbon regardless of the polar phase employed; meanwhile, Escherichia coli ATCC 25922 did not attach to either one. The capacity of the studied microorganisms to adhere to glassware was associated with their electron-donor properties. The ionic strength of the suspending media altered the patterns of adhesion to glass in a strain-specific manner by defining the magnitude of electrostatic repulsion observed between bacteria and the glass surface. This research demonstrated that glass test tubes may interact with suspended bacterial cells during the MATH test under specific conditions, which may lead to overestimating the percentage of adhesion to hydrocarbons and, thus, to erroneous values of cell surface hydrophobicity.
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Affiliation(s)
- Jesús A Salas-Tovar
- Centro de Investigación en Alimentación y Desarrollo, Ave. Río Conchos S/N, Parque Industrial, Cd. Cuauhtémoc, Chihuahua 31570, Mexico
| | - Sarai Escobedo-García
- Centro de Investigación en Alimentación y Desarrollo, Ave. Río Conchos S/N, Parque Industrial, Cd. Cuauhtémoc, Chihuahua 31570, Mexico
| | - Guadalupe I Olivas
- Centro de Investigación en Alimentación y Desarrollo, Ave. Río Conchos S/N, Parque Industrial, Cd. Cuauhtémoc, Chihuahua 31570, Mexico
| | - Carlos H Acosta-Muñiz
- Centro de Investigación en Alimentación y Desarrollo, Ave. Río Conchos S/N, Parque Industrial, Cd. Cuauhtémoc, Chihuahua 31570, Mexico
| | - Federico Harte
- Department of Food Science, The Pennsylvania State University, 331 Rodney A. Erickson Food Science Building University Park, PA 16802, United States
| | - David R Sepulveda
- Centro de Investigación en Alimentación y Desarrollo, Ave. Río Conchos S/N, Parque Industrial, Cd. Cuauhtémoc, Chihuahua 31570, Mexico
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Selmi H, Rocchetti MT, Capozzi V, Semedo-Lemsaddek T, Fiocco D, Spano G, Abidi F. Lactiplantibacillus plantarum from Unexplored Tunisian Ecological Niches: Antimicrobial Potential, Probiotic and Food Applications. Microorganisms 2023; 11:2679. [PMID: 38004691 PMCID: PMC10673251 DOI: 10.3390/microorganisms11112679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 10/26/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
The continued exploration of the diversity of lactic acid bacteria in little-studied ecological niches represents a fundamental activity to understand the diffusion and biotechnological significance of this heterogeneous class of prokaryotes. In this study, Lactiplantibacillus plantarum (Lpb. plantarum) strains were isolated from Tunisian vegetable sources, including fermented olive and fermented pepper, and from dead locust intestines, which were subsequently evaluated for their antimicrobial activity against foodborne pathogenic bacteria, including Escherichia coli O157:H7 CECT 4267 and Listeria monocytogenes CECT 4031, as well as against some fungi, including Penicillium expansum, Aspergilus niger, and Botrytis cinerea. In addition, their resistance to oro-gastro-intestinal transit, aggregation capabilities, biofilm production capacity, adhesion to human enterocyte-like cells, and cytotoxicity to colorectal adenocarcinoma cell line were determined. Further, adhesion to tomatoes and the biocontrol potential of this model food matrix were analyzed. It was found that all the strains were able to inhibit the indicator growth, mostly through organic acid production. Furthermore, these strains showed promising probiotic traits, including in vitro tolerance to oro-gastrointestinal conditions, and adhesion to abiotic surfaces and Caco-2 cells. Moreover, all tested Lpb. plantarum strains were able to adhere to tomatoes with similar rates (4.0-6.0 LogCFU/g tomato). The co-culture of LAB strains with pathogens on tomatoes showed that Lpb. plantarum could be a good candidate to control pathogen growth. Nonetheless, further studies are needed to guarantee their use as probiotic strains for biocontrol on food matrices.
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Affiliation(s)
- Hiba Selmi
- Faculty of Sciences of Bizerte, University of Carthage, Zarzouna, Bizerte 7021, Tunisia
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Carthage 1054, Tunisia;
| | - Maria Teresa Rocchetti
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy; (M.T.R.); (D.F.)
| | - Vittorio Capozzi
- Institute of Sciences of Food Production, National Research Council (CNR) of Italy, c/o CS-DAT, Via Michele Protano, 71122 Foggia, Italy;
| | - Teresa Semedo-Lemsaddek
- Centre for Interdisciplinary Research in Animal Health (CIISA), Faculty of Veterinary Medicine, University of Lisbon, Av. da Universidade Técnica de Lisboa, 1300-477 Lisbon, Portugal;
- Associate Laboratory for Animal and Veterinary Sciences (AL4AnimalS), 1300-477 Lisbon, Portugal
| | - Daniela Fiocco
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy; (M.T.R.); (D.F.)
| | - Giuseppe Spano
- Department of Agriculture Food Natural Science Engineering (DAFNE), University of Foggia, 71122 Foggia, Italy
| | - Ferid Abidi
- Laboratory of Protein Engineering and Bioactive Molecules (LIP-MB), National Institute of Applied Sciences and Technology, University of Carthage, Carthage 1054, Tunisia;
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Wang X, Li W, Mahsa GC, Zhang C, Ma K, Rui X, Li W. Co-cultivation effects of Lactobacillus helveticus SNA12 and Kluveromyces marxiensis GY1 on the probiotic properties, flavor, and digestion in fermented milk. Food Res Int 2023; 169:112843. [PMID: 37254417 DOI: 10.1016/j.foodres.2023.112843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 04/03/2023] [Accepted: 04/12/2023] [Indexed: 06/01/2023]
Abstract
This study aimed to evaluate inoculating the lactic acid bacteria Lactobacillus helveticus SNA12 and the yeast Kluyveromyces marxiensis GY1 as starter cultures on milk fermentation. In this study, the probiotic properties of L. helveticus SNA12, K. marxiensis GY1 and co-culture of these two strains (L. helveticus SNA12-K. marxiensis GY1) were investigated, and the results showed that K. marxiensis GY1 had better gastrointestinal tolerance, aggregation, and cell adhesion properties than L. helveticus SNA12. After the co-cultivation of two strains, the presence of K. marxiensis GY1 significantly increased the gastrointestinal tolerance, aggregation, and adhesion characteristics of L. helveticus SNA12. In order to investigate the flavor changes, digestive characteristics, and antioxidant properties following co-cultivation fermentation, the optimal fermentation ratio of 8 %-2% (v/v) and fermentation temperature (37 °C) of L. helveticus SNA12-K. marxiensis GY1 were determined. The results of the electronic nose and electronic tongue showed that L. helveticus SNA12-K. marxiensis GY1 could increase the aroma components of fermented milk, such as terpenes and aromatic substances. Meanwhile, dynamic in vitro rat stomach-duodenum model was used to analyse the changes in the digestion of proteins and peptides (<10 kDa), and the results indicated that co-cultivation fermented milk could be digested faster compared to a single fermentation. Furthermore, the antioxidant capacity of co-cultivation fermented milk was higher than that of single fermentation.
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Affiliation(s)
- Xiaomeng Wang
- Sanya Institute of Nanjing Agricultural University, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wenpei Li
- Sanya Institute of Nanjing Agricultural University, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Ghahvechi Chaeipeima Mahsa
- Sanya Institute of Nanjing Agricultural University, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Changliang Zhang
- Jiangsu Biodep Biotechnology Co., Ltd., Jiangyin, Jiangsu 214400, PR China
| | - Kai Ma
- Jiangsu Biodep Biotechnology Co., Ltd., Jiangyin, Jiangsu 214400, PR China
| | - Xin Rui
- Sanya Institute of Nanjing Agricultural University, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Li
- Sanya Institute of Nanjing Agricultural University, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Hidalgo VM, Babot JD, Fernández MM, Perez Chaia A, Audisio C, Apella MC. Characterization of lactic acid bacteria isolated from the poultry intestinal environment with anti-Salmonella activity in vitro. Braz J Microbiol 2023; 54:435-447. [PMID: 36333643 PMCID: PMC9944612 DOI: 10.1007/s42770-022-00860-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 10/22/2022] [Indexed: 11/07/2022] Open
Abstract
The purpose of this research was the genotypic identification of lactic acid bacteria (LAB), isolated from the gastrointestinal tract (GIT) of healthy adult birds, and the study of their safety regarding antibiotic resistance, physiological and functional properties involved in the colonization of the GIT of poultry, and Salmonella exclusion, as members of a potential mixed probiotic supplement for poultry. The nucleotidic sequence from Lactobacillus crispatus P1, L. animalis L3, and Enterococcus faecium CRL 1385 (ex-J96) showed 100, 99.8, and 99.3% identity with L. crispatus DSM 20584 T, Ligilactobacillus salivarius ATCC 11741 T, and E. faecium ATCC 19434 T, respectively. These strains showed no resistance to relevant antibiotics usually administered to animals proposed by the European Food Safety Authority. They could endure the detrimental conditions of the gastrointestinal tract (pH 2.6 and oxgall 0.1 and 0.4% w/v). In an ex vivo assay, the LAB showed high adherence to the three sections of the GIT, reaching values higher than 70%. The adhesion to mucus was strain-dependent: L. crispatus CRL 1453 evidenced the highest adhesion (> 19%) while Lig. salivarius subsp. salivarius CRL 1417 and E. faecium CRL 1385 adhered to a lower extent (> 9 and 2%, respectively). Moreover, the LAB elicited remarkable anti-Salmonella activity, taking into account that they could inhibit elevated counts of different Salmonella serovars, especially the host-specific serovars S. Gallinarum and S. Pullorum (up to 8 log CFU/mL decrease in Salmonella counts).
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Affiliation(s)
- Victor Maximiliano Hidalgo
- Estación Experimental Agroindustrial Obispo Colombres (EEAOC-Tucumán), San Miguel de Tucumán, Av. William Cross 3150, (T4101XAC), Tucumán, Argentina
| | - Jaime Daniel Babot
- Centro de Referencia para Lactobacilos (CERELA-CCT CONICET NOA Sur), San Miguel de Tucumán, Chacabuco 145, (T4000ILC), Tucumán, Argentina.
| | - María Magdalena Fernández
- Centro de Referencia para Lactobacilos (CERELA-CCT CONICET NOA Sur), San Miguel de Tucumán, Chacabuco 145, (T4000ILC), Tucumán, Argentina
| | - Adriana Perez Chaia
- Centro de Referencia para Lactobacilos (CERELA-CCT CONICET NOA Sur), San Miguel de Tucumán, Chacabuco 145, (T4000ILC), Tucumán, Argentina
- Universidad Nacional de Tucumán, Ayacucho 491, (T4000INI) San Miguel de Tucumán, Tucumán, Argentina
| | - Carina Audisio
- Instituto de Investigaciones para la Industria Química (INIQUI-CCT CONICET Salta-Jujuy), Buenos Aires 177, A4402FDC, Salta, Salta, Argentina
| | - María Cristina Apella
- Centro de Referencia para Lactobacilos (CERELA-CCT CONICET NOA Sur), San Miguel de Tucumán, Chacabuco 145, (T4000ILC), Tucumán, Argentina.
- Universidad Nacional de Tucumán, Ayacucho 491, (T4000INI) San Miguel de Tucumán, Tucumán, Argentina.
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Tang Z, Qian Y, Li Y, Wang R, Liu Z. Exploring the effect of Lactiplantibacillus plantarum Lac 9-3 with high adhesion on refrigerated shrimp: Adhesion modeling and biopreservation evaluation. Food Res Int 2023; 164:112462. [PMID: 36738013 DOI: 10.1016/j.foodres.2023.112462] [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: 08/09/2022] [Revised: 12/30/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023]
Abstract
Lactic acid bacteria (LAB) have recently become ideal candidates for developing food biopreservatives. Adhesion is critical for LAB to perform biocontrol functions in food processing and preservation. In this study, we innovatively proposed an effective adhesion evaluation model related to the surface properties of LAB to excavate a LAB strain with high adhesion on the surface of shrimp. Then, the biocontrol potential regarding the quality of refrigerated shrimp was explored, especially for protein quality. The screening of highly adherent LAB was performed using 54 LAB strains tolerant to the low temperature (4 °C) and present antimicrobial activity. Based on surface hydrophobicity, autoaggregation, and biofilm formation, a new method for predicting LAB adhesion was established by stepwise multiple linear regression. The most relevant relationship between adhesion and biofilm formation was derived from the model. Lactiplantibacillus plantarum Lac 9-3 stood out for the strongest adhesion on the shrimp surface and the highest antimicrobial activity. The preservation results showed that Lac 9-3 significantly (p < 0.05) retarded the accumulation of total volatile basic nitrogen (TVB-N) and the growth of spoilage bacteria. The damage to the texture properties of shrimp was inhibited. Meanwhile, the degradation of myofibrillar protein was alleviated, including a significant delay (p < 0.05) in sulfhydryl (SH) group reduction, surface hydrophobicity increases, and protein conformation changes. This research optimized the evaluation of the bacteria adhesion potential, providing a new idea for developing biocontrol strategies to extend the commercial life of aquatic products.
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Affiliation(s)
- Zhixin Tang
- College of Food Science and Engineering, Ocean University of China, 266003 Qingdao, Shandong Province, China
| | - Yilin Qian
- College of Food Science and Engineering, Ocean University of China, 266003 Qingdao, Shandong Province, China
| | - Yuan Li
- College of Food Science and Engineering, Ocean University of China, 266003 Qingdao, Shandong Province, China
| | - Rongrong Wang
- College of Food Science and Engineering, Ocean University of China, 266003 Qingdao, Shandong Province, China
| | - Zunying Liu
- College of Food Science and Engineering, Ocean University of China, 266003 Qingdao, Shandong Province, China.
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Adhesion and Anti-Adhesion Abilities of Potentially Probiotic Lactic Acid Bacteria and Biofilm Eradication of Honeybee ( Apis mellifera L.) Pathogens. Molecules 2022; 27:molecules27248945. [PMID: 36558073 PMCID: PMC9786635 DOI: 10.3390/molecules27248945] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
Lactic acid bacteria (LAB) naturally inhabits the organisms of honeybees and can exhibit adhesive properties that protect these insects against various pathogenic microorganisms. Thus, cell surface (auto-aggregation, co-aggregation, hydrophobicity) and adhesive properties of LAB to two abiotic (polystyrene and glass) and four biotic (collagen, gelatin, mucus, and intestinal Caco-2 cells) surfaces were investigated. Additionally, anti-adhesion activity and the eradication of honeybee pathogen biofilms by LAB metabolites (culture supernatants) were determined. The highest hydrophobicity was demonstrated by Pediococcus pentosaceus 19/1 (63.16%) and auto-aggregation by Lactiplantibacillus plantarum 18/1 (71.91%). All LAB showed a broad spectrum of adhesion to the tested surfaces. The strongest adhesion was noted for glass. The ability to co-aggregate with pathogens was tested for the three most potently adherent LAB strains. All showed various levels of co-aggregation depending on the pathogen. The eradication of mature pathogen biofilms by LAB metabolites appeared to be weaker than their anti-adhesive properties against pathogens. The most potent anti-adhesion activity was observed for L. plantarum 18/1 (98.80%) against Paenibacillus apiarius DSM 5582, while the strongest biofilm eradication was demonstrated by the same LAB strain against Melissococcus plutonius DSM 29964 (19.87%). The adhesive and anti-adhesive activity demonstrated by LAB can contribute to increasing the viability of honeybee colonies and improving the conditions in apiaries.
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Seyoum MM, Lichtenberg R, Orlofsky E, Bernstein N, Gillor O. Antibiotic resistance in soil and tomato crop irrigated with freshwater and two types of treated wastewater. ENVIRONMENTAL RESEARCH 2022; 211:113021. [PMID: 35276198 DOI: 10.1016/j.envres.2022.113021] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 01/26/2022] [Accepted: 02/17/2022] [Indexed: 06/14/2023]
Abstract
Agricultural use of treated wastewater (TWW) is an effective means to reduce freshwater (FW) consumption. However, there is a growing concern regarding the potential dissemination of antibiotic resistance elements by TWW irrigation. We hypothesized that higher levels of antibiotic resistance genes (ARGs) would be detected in soil and crops irrigated with TWW compared to FW irrigation. To test our prediction, samples of water (FW, secondary TWW, and tertiary TWW), irrigated soils, and crops (tomato) surface wash were collected during two consecutive growing seasons. The ARGs conferring resistance to sulfonamide, fluoroquinolone, penicillin, erythromycin and tetracycline were quantified in the samples, alongside Class 1 integron-integrase and the bacterial 16 S rRNA encoding genes. Contrary to our hypothesis, ARGs in the irrigation water were not propagated to either the irrigated soil, or the tomato. The tomato surface wash featured a variety of ARGs that were undetected in neither the waters nor the irrigated soils. Therefore, we cautiously question the link between irrigation water quality and the soil and produce resistomes.
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Affiliation(s)
- Mitiku Mihiret Seyoum
- Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University, Midreshet Ben Gurion, 8499000, Israel
| | - Rachel Lichtenberg
- Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University, Midreshet Ben Gurion, 8499000, Israel
| | - Ezra Orlofsky
- School of Engineering, Kinneret Academic College, Zemach, Emek HaYarden, 1513200, Israel
| | - Nirit Bernstein
- Institute of Soil, Water and Environmental Sciences, Agriculture Research Organization, Volcani Center, Rishon LeZion, 7505101, Israel
| | - Osnat Gillor
- Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University, Midreshet Ben Gurion, 8499000, Israel.
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Kang JH. Understanding inactivation of Listeria monocytogenes and Escherichia coli O157:H7 inoculated on romaine lettuce by emulsified thyme essential oil. Food Microbiol 2022; 105:104013. [PMID: 35473974 DOI: 10.1016/j.fm.2022.104013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/23/2022] [Accepted: 03/01/2022] [Indexed: 12/15/2022]
Abstract
Effects of thyme essential oil (TEO) emulsion (TEE) with cationic charge formulated using cetylpyridinium chloride (CPC) on attachment strength and inactivation of Listeria monocytogenes and Escherichia coli O157:H7 on romaine lettuce surface were examined in this study. Regardless of the inoculation time (2 h and 24 h), pathogen attachment was stronger on the adaxial surface of the romaine lettuce than on the abaxial surface because of the lower roughness of the former. Moreover, attachment strength increased with increasing inoculation time. TEE washing had the strongest inhibitory effect on pathogen attachment at 2 h when compared with that of TEO, CPC, and sodium hypochlorite (SH), demonstrating a 3.32 and 2.53 log-reduction in the size of the L. monocytogenes and E. coli O157:H7 populations, respectively, compared to the control samples. Additionally, the TEE washing effects were maintained even after inoculation for 24 h, and it decreased attachment to adaxial surface of the samples. These results indicate that TEE could be a good alternative to SH in improving the microbiological safety of romaine lettuce.
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Affiliation(s)
- Ji-Hoon Kang
- Department of Food Science and Biotechnology, Global K-Food Research Center, Hankyong National University, Anseong-si, 17579, Republic of Korea.
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Oliveira GS, Freire HPS, Romano CC, Rezende RP, Evangelista AG, Meneghetti C, Costa LB. Bioprotective potential of lactic acid bacteria and their metabolites against enterotoxigenic Escherichia coli. MICROBIOLOGY (READING, ENGLAND) 2022; 168. [PMID: 35849513 DOI: 10.1099/mic.0.001216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Escherichia coli is one of the main pathogens that impacts swine production. Given the need for methods for its control, the in vitro effect of lactic acid bacteria (LAB) and their metabolites against E. coli F4 was evaluated through cell culture and microbiological analysis. The strains Limosilactobacillus fermentum 5.2, Lactiplantibacillus plantarum 6.2, and L. plantarum 7.1 were selected. To evaluate the action of their metabolites, lyophilized cell-free supernatants (CFS) were used. The effect of CFS was evaluated in HT-29 intestinal lineage cells; in inhibiting the growth of the pathogen in agar; and in inhibiting the formation of biofilms. The bioprotective activity of LAB was evaluated via their potential for autoaggregation and coaggregation with E. coli. The CFS did not show cytotoxicity at lower concentrations, except for L. fermentum 5.2 CFS, which is responsible for cell proliferation at doses lower than 10 mg ml-1. The CFS were also not able to inhibit the growth of E. coli F4 in agar; however, the CFS of L. plantarum 7.1 resulted in a significant decrease in biofilm formation at a dose of 40 mg ml-1. Regarding LAB, their direct use showed great potential for autoaggregation and coaggregation in vitro, thus suggesting possible effectiveness in animal organisms, preventing E. coli fixation and proliferation. New in vitro tests are needed to evaluate lower doses of CFS to control biofilms and confirm the bioprotective potential of LAB, and in vivo tests to assess the effect of LAB and their metabolites interacting with animal physiology.
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Affiliation(s)
- Gabriel Souza Oliveira
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Herbert Pina Silva Freire
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Carla Cristina Romano
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Rachel Passos Rezende
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Alberto Gonçalves Evangelista
- Pontifical Catholic University of Paraná, School of Life Sciences, Rua Imaculada Conceição, 1155, Prado Velho, Curitiba, Paraná, 80215-901, Brazil
| | - Camila Meneghetti
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil
| | - Leandro Batista Costa
- State University of Santa Cruz, Rodovia Jorge Amado, Km 16, Salobrinho, Ilhéus, Bahia, 45662-900, Brazil.,Pontifical Catholic University of Paraná, School of Life Sciences, Rua Imaculada Conceição, 1155, Prado Velho, Curitiba, Paraná, 80215-901, Brazil
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Zhong Y, Fu D, Deng Z, Tang W, Mao J, Zhu T, Zhang Y, Liu J, Wang H. Lactic Acid Bacteria Mixture Isolated From Wild Pig Alleviated the Gut Inflammation of Mice Challenged by Escherichia coli. Front Immunol 2022; 13:822754. [PMID: 35154141 PMCID: PMC8825813 DOI: 10.3389/fimmu.2022.822754] [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: 11/26/2021] [Accepted: 01/05/2022] [Indexed: 12/12/2022] Open
Abstract
Wild pigs usually showed high tolerance and resistance to several diseases in the wild environment, suggesting that the gut bacteria of wild pigs could be a good source for discovering potential probiotic strains. In our study, wild pig feces were sequenced and showed a higher relative abundance of the genus Lactobacillus (43.61% vs. 2.01%) than that in the domestic pig. A total of 11 lactic acid bacteria (LAB) strains including two L. rhamnosus, six L. mucosae, one L. fermentum, one L. delbrueckii, and one Enterococcus faecalis species were isolated. To investigate the synergistic effects of mixed probiotics strains, the mixture of 11 LAB strains from an intestinal ecology system was orally administrated in mice for 3 weeks, then the mice were challenged with Escherichia coli ATCC 25922 (2 × 109 CFU) and euthanized after challenge. Mice administrated with LAB strains showed higher (p < 0.05) LAB counts in feces and ileum. Moreover, alterations of specific bacterial genera occurred, including the higher (p < 0.05) relative abundance of Butyricicoccus and Clostridium IV and the lower (p < 0.05) abundance of Enterorhabdus in mice fed with mixed LAB strains. Mice challenged with Escherichia coli showed vacuolization of the liver, lower GSH in serum, and lower villus to the crypt proportion and Claudin-3 level in the gut. In contrast, administration of mixed LAB strains attenuated inflammation of the liver and gut, especially the lowered IL-6 and IL-1β levels (p < 0.05) in the gut. Our study highlighted the importance of gut bacterial diversity and the immunomodulation effects of LAB strains mixture from wild pig in gut health.
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Affiliation(s)
- Yifan Zhong
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Dongyan Fu
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Zhaoxi Deng
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Wenjie Tang
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Jiangdi Mao
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Tao Zhu
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Yu Zhang
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Jianxin Liu
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
| | - Haifeng Wang
- College of Animal Science, Zhejiang University, The Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Hangzhou, China
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Ma WJ, Zhao MN, Lu ZX, Lv FX, Zhang P, Bie XM. Isolation of Lactic Acid Bacteria from Yogurt and the Effect on the Intestinal Microflora in Mice. BIOL BULL+ 2022. [DOI: 10.1134/s1062359022130118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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13
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ZHANG W, LV X, LIU Z, NI L. The spoilage and adhesion inhibitory effects of Bacillus subtilis against Shewanella and Pseudomonas in large yellow croaker (Pseudosciaena crocea). FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.02721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Settier-Ramírez L, López-Carballo G, Gavara R, Hernández-Muñoz P. Effect of casein hydrolysates on the survival of protective cultures of Lactococcus lactis and Lactobacillus sakei in PVOH films. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.107012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Rehydration before Application Improves Functional Properties of Lyophilized Lactiplantibacillus plantarum HAC03. Microorganisms 2021; 9:microorganisms9051013. [PMID: 34066743 PMCID: PMC8150888 DOI: 10.3390/microorganisms9051013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 04/30/2021] [Accepted: 05/05/2021] [Indexed: 11/16/2022] Open
Abstract
Preservation of probiotics by lyophilization is considered a method of choice for developing stable products. However, both direct consumption and reconstitution of dehydrated probiotic preparations before application "compromise" the survival and functional characteristics of the microorganisms under the stress of the upper gastro-intestinal tract. We evaluated the impact of different food additives on the viability, mucin adhesion, and zeta potential of a freeze-dried putative probiotic, Lactiplantibacillus (Lp.) plantarum HAC03. HAC03-compatible ingredients for the formulation of ten rehydration mixtures could be selected. Elevated efficacy was achieved by the B-active formulation, a mixture of non-protein nitrogen compounds, sugars, and salts. The survival of Lp. plantarum HAC03 increased by 36.36% compared rehydration with distilled water (4.92%) after passing simulated gastro-intestinal stress conditions. Cell viability determined by plate counting was confirmed by flow cytometry. B-active formulation also influenced Lp. plantarum HAC03 functionality by increasing its adherence to a Caco-2 cell-line and by changing the bacterial surface charge, measured as zeta potential.Hydrophobicity, mucin adhesion and immunomodulatory properties of Lp. plantarum HAC03 were not affected by the B-active formulation. The rehydration medium also effectively protected Lp. plantarum ATCC14917, Lp. plantarum 299v, Latilactobacillus sakei (Lt.) HAC11, Lacticaseibacillus (Lc.) paracasei 532, Enterococcus faecium 200, and Lc. rhamnosus BFE5263.
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