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Khiabani A, Xiao H, Wätjen AP, Tovar M, Poulsen VK, Hansen EB, Bang-Berthelsen CH. Exploring the Diversity and Potential Use of Flower-Derived Lactic Acid Bacteria in Plant-Based Fermentation: Insights into Exo-Cellular Polysaccharide Production. Foods 2024; 13:2907. [PMID: 39335836 PMCID: PMC11430985 DOI: 10.3390/foods13182907] [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: 07/24/2024] [Revised: 08/24/2024] [Accepted: 09/10/2024] [Indexed: 09/30/2024] Open
Abstract
Isolation of new plant-derived lactic acid bacteria (LAB) is highly prioritized in developing novel starter cultures for plant-based fermentation. This study explores the diversity of LAB in Danish flowers and their potential use for plant-based food fermentation. A total of 46 flower samples under 34 genera were collected for LAB isolation. By introducing an enrichment step, a total of 61 LAB strains were isolated and identified using MALDI-TOF and 16S rRNA sequencing. These strains represent 24 species across 9 genera, predominantly Leuconostoc mesenteroides, Fructobacillus fructosus, Apilactobacillus ozensis, and Apilactobacillus kunkeei. Phenotypic screening for exo-cellular polysaccharide production revealed that 40 strains exhibited sliminess or ropiness on sucrose-containing agar plates. HPLC analysis confirmed that all isolates produced exo-cellular polysaccharides containing glucose, fructose, or galactose as sugar monomers. Therefore, the strains were glucan, fructan, and galactan producers. The suitability of these strains for plant-based fermentation was characterized by using almond, oat, and soy milk. The results showed successful acidification in all three types of plant-based matrices but only observed texture development in soy by Leuconostoc, Weissella, Lactococcus, Apilactobacillus, and Fructobacillus. The findings highlight the potential of flower-derived LAB strains for texture development in soy-based dairy alternatives.
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Affiliation(s)
- Azadeh Khiabani
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitrovet, Building 202, 2800 Kongens Lyngby, Denmark
| | - Hang Xiao
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitrovet, Building 202, 2800 Kongens Lyngby, Denmark
| | - Anders Peter Wätjen
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitrovet, Building 202, 2800 Kongens Lyngby, Denmark
| | - Miguel Tovar
- Microbe & Culture Research, Novonesis A/S, Gammel Venlighedsvej 14, 2970 Hørsholm, Denmark
| | - Vera Kuzina Poulsen
- Microbe & Culture Research, Novonesis A/S, Gammel Venlighedsvej 14, 2970 Hørsholm, Denmark
| | - Egon Bech Hansen
- Research Group for Gut, Microbes and Health, National Food Institute, Technical University of Denmark, Kemitrovet, Building 202, 2800 Kongens Lyngby, Denmark
| | - Claus Heiner Bang-Berthelsen
- Research Group for Microbial Biotechnology and Biorefining, National Food Institute, Technical University of Denmark, Kemitrovet, Building 202, 2800 Kongens Lyngby, Denmark
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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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Exploring the Inhibitory Activity of Selected Lactic Acid Bacteria against Bread Rope Spoilage Agents. FERMENTATION-BASEL 2023. [DOI: 10.3390/fermentation9030290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
Abstract
In this study, a wide pool of lactic acid bacteria strains deposited in two recognized culture collections was tested against ropy bread spoilage bacteria, specifically belonging to Bacillus spp., Paenibacillus spp., and Lysinibacillus spp. High-throughput and ex vivo screening assays were performed to select the best candidates. They were further investigated to detect the production of active antimicrobial metabolites and bacteriocins. Moreover, technological and safety features were assessed to value their suitability as biocontrol agents for the production of clean-label bakery products. The most prominent inhibitory activities were shown by four strains of Lactiplantibacillus plantarum (NFICC19, NFICC 72, NFICC163, and NFICC 293), two strains of Pediococcus pentosaceus (NFICC10 and NFICC341), and Leuconostoc citreum NFICC28. Moreover, the whole genome sequencing of the selected LAB strains and the in silico analysis showed that some of the strains contain operons for bacteriocins; however, no significant evidence was observed phenotypically.
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Muthusamy K, Han HS, Soundharrajan I, Jung JS, Valan Arasu M, Choi KC. A Novel Strain of Probiotic Leuconostoc citreum Inhibits Infection-Causing Bacterial Pathogens. Microorganisms 2023; 11:microorganisms11020469. [PMID: 36838434 PMCID: PMC9958635 DOI: 10.3390/microorganisms11020469] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/08/2023] [Accepted: 02/11/2023] [Indexed: 02/15/2023] Open
Abstract
Infectious diseases caused by bacteria are at risk of spreading and prolonging due to antimicrobial resistance. It is, therefore, urgently necessary to develop a more effective antibiotic alternative strategy to control pathogen spread. In general, probiotics have been recommended as a substitute for antibiotics that inhibit pathogens. This study was isolated and probiotic characteristics and antibacterial bacterial efficiency against various infection-causing pathogens were determined by different in vitro methods. A 16S rRNA sequence confirmed that the isolated strains belonged to a species of Leuconostoc citreum. L. citreum KCC-57 and KCC-58 produced various extracellular enzymes and fermented different carbohydrates. There was significant tolerance for both strains under the harsh conditions of the gastrointestinal tract (GIT). In addition, L. citreum KCC-57 and L. citreum KCC-58 showed significant auto-aggregations and hydrophobicity properties that varied with incubation time. Moreover, the cell-free secondary supernatant (CFS) of L. citreum KCC-57 and L. citreum KCC-58 inhibited growth of Enterococcus faecalis, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. According to a co-culture study, L. citreum KCC-57 and L. citreum KCC-58 were highly competitive for pathogen growth. L. citreum KCC-57 and L. citreum KCC-58 showed significant probiotic potential and strong antibacterial activities against different pathogens, suggesting that these strains could be used instead of antibiotics to control infectious pathogens.
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Affiliation(s)
- Karnan Muthusamy
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea
| | - Hyo-Shim Han
- Department of Biotechnology, Sunchon University, Suncheon 540742, Republic of Korea
| | - Ilavenil Soundharrajan
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea
| | - Jeong-Sung Jung
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ki-Choon Choi
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea
- Correspondence: ; Tel.: +82-41-580-6752; Fax: +82-41-580-6779
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Valorization of wheat bread waste and cheese whey through cultivation of lactic acid bacteria for bio-preservation of bakery products. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Wu J, Yang L, Wu Z, Zhang W. Kinetic modeling the survival of
Escherichia coli
in pickled radish fermentation with different salt concentrations. J FOOD PROCESS ENG 2022. [DOI: 10.1111/jfpe.14241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jiale Wu
- Department of Food Engineering, College of Biomass Science and Engineering Sichuan University Chengdu People's Republic of China
| | - Li Yang
- Department of Food Engineering, College of Biomass Science and Engineering Sichuan University Chengdu People's Republic of China
| | - Zhengyun Wu
- Department of Food Engineering, College of Biomass Science and Engineering Sichuan University Chengdu People's Republic of China
| | - Wenxue Zhang
- Department of Food Engineering, College of Biomass Science and Engineering Sichuan University Chengdu People's Republic of China
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