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Aktepe Y, Aydın F, Bozoğlu T, Özer G, Çakır İ. Molecular characterization and multifunctional evaluation of lactic acid bacteria isolated from traditional sourdough. Int J Food Microbiol 2024; 423:110845. [PMID: 39079449 DOI: 10.1016/j.ijfoodmicro.2024.110845] [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: 04/30/2024] [Revised: 07/11/2024] [Accepted: 07/24/2024] [Indexed: 08/18/2024]
Abstract
The primary objective of this study was to characterize lactic acid bacteria (LAB) strains derived from sourdough for possible utilization as functional starters to produce sourdough and various cereal-based fermented foods. A total of 350 autochthonous LAB strains were isolated from 65 Type I sourdough samples and characterized using six random amplified polymorphic DNA (RAPD) primers at intra- and interspecific levels. Species identification of selected strains representing distinct clusters from RAPD analysis was performed based on the 16S rRNA region. The LAB strains were identified as Companilactobacillus crustorum (n = 135), Levilactobacillus brevis (n = 125), Latilactobacillus curvatus (n = 40), Companilactobacillus paralimentarius (n = 32), and Lactiplantibacillus plantarum (n = 18). A total of 66 LAB strains were selected for technological characterization along with two commercial strains. The characterization involved acidity development, EPS production potential, leavening activity, and growth abilities under harsh conditions. Principle component analysis (PCA) identified 2 Lp. plantarum and 14 Lev. brevis strains as the most relevant technologically. Among them, Lp. plantarum L35.1 and Lev. brevis L37.1 were resistant to tetracycline. Evaluation of probiotic characteristics (survival in pH 2.5 and bile presence, auto aggregation capacity, hydrophobic activity, antioxidant activity, antimicrobial activity) by PCA identified four strains with relevance to Lactobacillus rhamnosus GG (LGG), which were further selected for in vitro digestion assays. Lactiplantibacillus plantarum L7.8, Lev. brevis L55.1, and L62.2 demonstrated similar viability indices to LGG, along with increased auto aggregation capacity and antioxidant activity. These strains are promising as candidate starters for producing sourdough and sourdough-related fermented food products.
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Affiliation(s)
- Yeşim Aktepe
- Department of Food Engineering, Faculty of Engineering, Bolu Abant Izzet Baysal University, 14030, Bolu, Türkiye
| | - Furkan Aydın
- Department of Food Engineering, Faculty of Engineering, Aksaray University, 68100, Aksaray, Türkiye
| | - Tuğba Bozoğlu
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, 14030, Bolu, Türkiye
| | - Göksel Özer
- Department of Plant Protection, Faculty of Agriculture, Bolu Abant Izzet Baysal University, 14030, Bolu, Türkiye
| | - İbrahim Çakır
- Department of Food Engineering, Faculty of Engineering, Bolu Abant Izzet Baysal University, 14030, Bolu, Türkiye.
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Mukherjee A, Breselge S, Dimidi E, Marco ML, Cotter PD. Fermented foods and gastrointestinal health: underlying mechanisms. Nat Rev Gastroenterol Hepatol 2024; 21:248-266. [PMID: 38081933 DOI: 10.1038/s41575-023-00869-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/01/2023] [Indexed: 12/20/2023]
Abstract
Although fermentation probably originally developed as a means of preserving food substrates, many fermented foods (FFs), and components therein, are thought to have a beneficial effect on various aspects of human health, and gastrointestinal health in particular. It is important that any such perceived benefits are underpinned by rigorous scientific research to understand the associated mechanisms of action. Here, we review in vitro, ex vivo and in vivo studies that have provided insights into the ways in which the specific food components, including FF microorganisms and a variety of bioactives, can contribute to health-promoting activities. More specifically, we draw on representative examples of FFs to discuss the mechanisms through which functional components are produced or enriched during fermentation (such as bioactive peptides and exopolysaccharides), potentially toxic or harmful compounds (such as phytic acid, mycotoxins and lactose) are removed from the food substrate, and how the introduction of fermentation-associated live or dead microorganisms, or components thereof, to the gut can convey health benefits. These studies, combined with a deeper understanding of the microbial composition of a wider variety of modern and traditional FFs, can facilitate the future optimization of FFs, and associated microorganisms, to retain and maximize beneficial effects in the gut.
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Affiliation(s)
| | - Samuel Breselge
- Teagasc Food Research Centre, Moorepark, Cork, Ireland
- APC Microbiome Ireland, Cork, Ireland
| | - Eirini Dimidi
- Department of Nutritional Sciences, King's College London, London, UK
| | - Maria L Marco
- Department of Food Science & Technology, University of California, Davis, CA, USA
| | - Paul D Cotter
- Teagasc Food Research Centre, Moorepark, Cork, Ireland.
- APC Microbiome Ireland, Cork, Ireland.
- VistaMilk, Cork, Ireland.
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Zaffar R, Nazir R, Rather MA, Dar R. Biofilm formation and EPS production enhances the bioremediation potential of Pseudomonas species: a novel study from eutrophic waters of Dal lake, Kashmir, India. Arch Microbiol 2024; 206:89. [PMID: 38308703 DOI: 10.1007/s00203-023-03817-0] [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: 11/15/2023] [Revised: 12/17/2023] [Accepted: 12/25/2023] [Indexed: 02/05/2024]
Abstract
The present study was conducted with the aim of isolation and identification of the biofilm-forming denitrifying Pseudomonas bacterial strains from eutrophic waters of Dal lake, India, followed by the study of inter-relation of biofilm formation and denitrification potential of Pseudomonas strains. The bacterial strains were characterized by morphological observations and identified using 16S rDNA sequencing followed by the quantification of biofilm formation of these st by crystal violet (CV) assay using 96-well microtiter plate and extracellular polymeric substance (EPS) extraction. Lastly, the nitrate-reducing potential of all Pseudomonas species was studied. Our evaluation revealed that four different Pseudomonas species were observed to have the biofilm-forming potential and nitrate-reducing properties and the species which showed maximum biofilm-forming potential and maximum EPS production exhibited higher nitrate-removing capacity. Moreover, P. otitis was observed to have the highest denitrification capacity (89%) > P. cedrina (83%) > P. azotoform (79%) and the lowest for P. peli (70%). These results clearly signify a positive correlation of biofilm-forming capacity and nitrate-removing ability of Pseudomonas species. This study has for the first time successfully revealed the bioremediation potential of P. otitis, P. cedrina, P. azotoform, and P. peli species, thus contributing to the growing list of known nitrate-reducing Pseudomonas species. Based upon the results, these strains can be extrapolated to nitrate-polluted water systems for combating water pollution.
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Affiliation(s)
- Riasa Zaffar
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India
| | - Ruqeya Nazir
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India.
| | - Mushtaq Ahmad Rather
- Energy Engineering Lab, Department of Chemical Engineering, National Institute of Technology (NIT), Srinagar, J&K, India
| | - Rubiya Dar
- Microbiology Research Laboratory, Centre of Research for Development (CORD)/Department of Environmental Science, University of Kashmir, Srinagar, J&K, India
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Jang HM, Kim JK, Joo MK, Shin YJ, Lee KE, Lee CK, Kim HJ, Kim DH. Enterococcus faecium and Pediococcus acidilactici deteriorate Enterobacteriaceae-induced depression and colitis in mice. Sci Rep 2022; 12:9389. [PMID: 35672451 PMCID: PMC9174183 DOI: 10.1038/s41598-022-13629-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/11/2022] [Indexed: 01/14/2023] Open
Abstract
Gut dysbiosis is closely associated with the outbreak of inflammatory bowel disease (IBD) and psychiatric disorder. The Enterobacteriaceae population was higher in the feces of patients with inflammatory bowel disease (IBD-F) than in those of healthy control volunteers (HC-F). The Enterococcaceae and Lactobacillaceae populations were higher in the feces of IBD patients with depression (IBD/D+-F) vs. the feces of IBD patients without depression (IBD/D--F). Therefore, we examined the effects of Klebsiella oxytoca, Escherichia coli, Cronobacter sakazakii, Enterococcus faecium, and Pediococcus acidolactici overpopulated in IBD/D+-F and their byproducts LPS and exopolysaccharide (EPS) on the occurrence of depression and colitis in mice. Oral gavages of Klebsiella oxytoca, Escherichia coli, and Cronobacter sakazakii belonging to Enterobacteriaceae, singly or together, caused dose-dependently colitis and depression-like behaviors in germ-free and specific-pathogen-free mice. Although Enterococcus faecium and Pediococcus acidolactici did not significantly cause colitis and depression-like behaviors, they significantly deteriorated Klebsiella oxytoca- or Escherichia coli-induced colitis, neuroinflammation, and anxiety/depression-like behaviors and increased blood LPS, corticosterone, and IL-6 levels. The EPSs from Enterococcus faecium and Pediococcus acidolactici also worsened Klebsiella oxytoca LPS-induced colitis, neuroinflammation, and depression-like behaviors in mice and increased the translocation of fluorescein isothiocyanate-conjugated LPS into the hippocampus. However, Bifidobacterium longum, which was lower in IBD/D+-F vs. IBD/D--F, or its EPS suppressed them. In conclusion, Enterococcus faecium and Pediococcus acidolactici, known as a probiotic strain, and their EPSs may be a risk factor for the outbreak of depression and IBD.
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Affiliation(s)
- Hyo-Min Jang
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
| | - Jeon-Kyung Kim
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
- College of Pharmacy, Jeonbuk National University, 26, Jeonju, 54896, Korea
| | - Min-Kyung Joo
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
| | - Yoon-Jung Shin
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
| | - Kyung-Eon Lee
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea
| | - Chang Kyun Lee
- Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, 02447, Korea
| | - Hyo-Jong Kim
- Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, 02447, Korea
| | - Dong-Hyun Kim
- Neurobiota Research Center, College of Pharmacy, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Korea.
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Limosilactobacillus fermentum ING8, a Potential Multifunctional Non-Starter Strain with Relevant Technological Properties and Antimicrobial Activity. Foods 2022; 11:foods11050703. [PMID: 35267336 PMCID: PMC8909343 DOI: 10.3390/foods11050703] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/22/2022] [Accepted: 02/24/2022] [Indexed: 11/16/2022] Open
Abstract
Lactic acid bacteria (LAB) have gained particular attention among different exopolysaccharide-producing microorganisms due to their safety status and effects on human health and food production. Exopolysaccharide-producing LAB play a crucial role in different ways, such as improving texture, mouthfeel, controlling viscosity, and for low-calorie food production. In this study, we isolated a multifunctional strain with good exopolysaccharide production properties. Limosilactobacillus fermentum ING8 was isolated from an Indian traditional fermented milk (Dahi) and evaluated for its safety, enzymatic activity, NaCl resistance and temperature tolerance, milk coagulation, and storage stability. Finally, the complete genome of this strain was sequenced and subjected to safety in silico evaluation and genomic analysis. The results revealed that L. fermentum ING8 possesses relevant technological properties, such as exopolysaccharide production, antimicrobial activity, and galactose utilization. Besides, this strain showed very high stability to storage conditions at refrigeration temperature. In addition, the genomic analysis did not evidence any possible deleterious elements, such as acquired antibiotic resistance genes, virulence genes, or hemolysis-related genes. However, all structural genes related to the galactose operon and EPS production were detected. Therefore, L. fermentum ING8 can be considered a promising multifunctional bacterium to be proposed as non-starter in different types of dairy productions.
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Tsigkrimani M, Panagiotarea K, Paramithiotis S, Bosnea L, Pappa E, Drosinos EH, Skandamis PN, Mataragas M. Microbial Ecology of Sheep Milk, Artisanal Feta, and Kefalograviera Cheeses. Part II: Technological, Safety, and Probiotic Attributes of Lactic Acid Bacteria Isolates. Foods 2022; 11:foods11030459. [PMID: 35159609 PMCID: PMC8834287 DOI: 10.3390/foods11030459] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
The aim of the present study was to examine 189 LAB strains belonging to the species Enterococcus faecium, E. faecalis, Lactococcus lactis, Pediococcus pentosaceus, Leuconostoc mesenteroides, Lactiplantibacillus pentosus, Latilactobacillus curvatus, Lp. plantarum, Levilactobacillus brevis, and Weissella paramesenteroides isolated form sheep milk, Feta and Kefalograviera cheeses at different ripening stages, for their technological compatibility with dairy products manufacturing, their activities that may compromise safety of the dairy products as well as their capacity to survive in the human gastrointestinal tract. For that purpose, milk acidification and coagulation capacity, caseinolytic, lipolytic, hemolytic, gelatinolytic, and bile salt hydrolase activity, production of exopolysaccharides, antimicrobial compounds, and biogenic amines, as well as acid and bile salt tolerance and antibiotic susceptibility were examined. The faster acidifying strains were Lc. lactis DRD 2658 and P. pentosaceus DRD 2657 that reduced the pH value of skim milk, within 6 h to 5.97 and 5.92, respectively. Strains able to perform weak caseinolysis were detected in all species assessed. On the contrary, lipolytic activity, production of exopolysaccharides, amino acid decarboxylation, hemolytic, gelatinase, and bile salt hydrolase activity were not detected. Variable susceptibility to the antibiotics examined was detected among LAB strains. However, in the majority of the cases, resistance was evident. None of the strains assessed, managed to survive to exposure at pH value 1. On the contrary, 25.9 and 88.9% of the strains survived after exposure at pH values 2 and 3, respectively; the reduction of the population was larger in the first case. The strains survived well after exposure to bile salts. The strain-dependent character of the properties examined was verified. Many strains, belonging to different species, have presented very interesting properties; however, further examination is needed before their potential use as starter or adjunct cultures.
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Affiliation(s)
- Markella Tsigkrimani
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece; (M.T.); (K.P.); (S.P.); (E.H.D.); (P.N.S.)
| | - Konstantina Panagiotarea
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece; (M.T.); (K.P.); (S.P.); (E.H.D.); (P.N.S.)
| | - Spiros Paramithiotis
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece; (M.T.); (K.P.); (S.P.); (E.H.D.); (P.N.S.)
| | - Loulouda Bosnea
- Department of Dairy Research, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “DIMITRA”, 3 Ethnikis Antistaseos St., 45221 Ioannina, Greece; (L.B.); (E.P.)
| | - Eleni Pappa
- Department of Dairy Research, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “DIMITRA”, 3 Ethnikis Antistaseos St., 45221 Ioannina, Greece; (L.B.); (E.P.)
| | - Eleftherios H. Drosinos
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece; (M.T.); (K.P.); (S.P.); (E.H.D.); (P.N.S.)
| | - Panagiotis N. Skandamis
- Department of Food Science and Human Nutrition, Agricultural University of Athens, 75 Iera Odos St., 11855 Athens, Greece; (M.T.); (K.P.); (S.P.); (E.H.D.); (P.N.S.)
| | - Marios Mataragas
- Department of Dairy Research, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “DIMITRA”, 3 Ethnikis Antistaseos St., 45221 Ioannina, Greece; (L.B.); (E.P.)
- Correspondence:
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Characterization and Biological Activity of a Novel Exopolysaccharide Produced by Pediococcus pentosaceus SSC-12 from Silage. Microorganisms 2021; 10:microorganisms10010018. [PMID: 35056471 PMCID: PMC8780647 DOI: 10.3390/microorganisms10010018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/16/2021] [Accepted: 12/21/2021] [Indexed: 12/12/2022] Open
Abstract
In this study, 22 strains of exopolysaccharides-producing lactic acid bacteria were isolated from silage, and the strain SSC–12 with the highest exopolysaccharide (EPS) production was used as the test strain. The SSC–12 was identified as Pediococcus pentosaceus, based upon 16S rDNA gene sequencing and Neighbor Joining (NJ) phylogenetic analysis. The analysis of the kinetic results of EPS generation of SSC–12 showed that the EPS generation reached the maximum value at 20 h of culture. The characterization study showed the EPS produced by SSC–12 was a homogeneous heteropolysaccharide comprising glucose (42.6%), mannose (28.9%), galactose (16.2%), arabinose (9.4%), and rhamnose (2.9%). The EPS had good antioxidant activity, especially the activity of scavenging hydroxyl free radicals. At the same time, the EPS also had strong antibacterial ability and could completely inhibit the growth of Staphylococcus aureus. The EPS produced by the Pediococcus pentosaceus SSC–12 can be used as a biologically active product with potential application prospects in the feed, food, and pharmaceutical industries.
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Syrokou MK, Tziompra S, Psychogiou EE, Mpisti SD, Paramithiotis S, Bosnea L, Mataragas M, Skandamis PN, Drosinos EH. Technological and Safety Attributes of Lactic Acid Bacteria and Yeasts Isolated from Spontaneously Fermented Greek Wheat Sourdoughs. Microorganisms 2021; 9:microorganisms9040671. [PMID: 33805132 PMCID: PMC8064081 DOI: 10.3390/microorganisms9040671] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/11/2022] Open
Abstract
The aim of the present study was to assess the technological and safety potential of 207 lactic acid bacteria (LAB) and 195 yeast strains isolated from spontaneously fermented Greek wheat sourdoughs. More accurately, the amylolytic, proteolytic, lipolytic, phytase and amino acid decarboxylase activities, along with the production of exopolysaccharides and antimicrobial compounds by the LAB and yeast isolates, were assessed. A well diffusion assay revealed seven proteolytic LAB and eight yeast strains; hydrolysis of tributyrin was evident only in 11 LAB strains. A further Sodium Dodecyl Sulphate-Polyacrylamide Gel Electrophoresis (SDS-PAGE) indicated partial hydrolysis of gluten. Lipolysis kinetics over 21 days was applied, exhibiting that lipolytic activity ranged from 6.25 to 65.50 AU/mL. Thirteen LAB inhibited Penicillium olsonii and Aspergillus niger growth and 12 yeast strains inhibited Pe. chrysogenum growth. Twenty-one Lactiplantibacillus plantarum strains exhibited inhibitory activity against Listeria monocytogenes, as well as several sourdough-associated isolates. The structural gene encoding plantaricin 423 was detected in 19 Lcb. plantarum strains, while the structural genes encoding plantaricins NC8, PlnE/F, PlnJ/K, and S were detected in two Lcb. plantarum strains. None of the microbial strains tested exhibited exopolysaccharide (EPS) production, amino acid decarboxylase, amylolytic or phytase activity. The technological and safety potential of the Lcb. plantarum and Wickerhamomyces anomalus strains was highlighted, since some of them exhibited proteolytic, lipolytic, antibacterial and antimould activities.
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Affiliation(s)
- Maria K. Syrokou
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
| | - Sofia Tziompra
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
| | - Eleni-Efthymia Psychogiou
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
| | - Sofia-Despoina Mpisti
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
| | - Spiros Paramithiotis
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
- Correspondence:
| | - Loulouda Bosnea
- Department of Dairy Research, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “DEMETER”, 45221 Ioannina, Greece; (L.B.); (M.M.)
| | - Marios Mataragas
- Department of Dairy Research, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization “DEMETER”, 45221 Ioannina, Greece; (L.B.); (M.M.)
| | - Panagiotis N. Skandamis
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
| | - Eleftherios H. Drosinos
- Laboratory of Food Quality Control and Hygiene, Department of Food Science and Human Nutrition, Agricultural University of Athens, 11855 Athens, Greece; (M.K.S.); (S.T.); (E.-E.P.); (S.-D.M.); (P.N.S.); (E.H.D.)
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Loeffler M, Hilbig J, Velasco L, Weiss J. Usage of in situ exopolysaccharide-forming lactic acid bacteria in food production: Meat products-A new field of application? Compr Rev Food Sci Food Saf 2020; 19:2932-2954. [PMID: 33337046 DOI: 10.1111/1541-4337.12615] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/02/2020] [Accepted: 07/15/2020] [Indexed: 12/01/2022]
Abstract
In the meat industry, hydrocolloids and phosphates are used to improve the quality attributes of meat products. However, latest research results revealed that the usage of exopolysaccharide (EPS)-forming lactic acid bacteria (LAB), which are able to produce EPS in situ during processing could be an interesting alternative. The current review aims to give a better understanding of bacterial EPS production in food matrices with a special focus on meat products. This includes an introduction to microbial EPS production (homopolysaccharides as well as heteropolysaccharides) and an overview of parameters affecting EPS formation and yield depending on LAB used. This is followed by a summary of methods to detect and characterize EPS to facilitate a rational selection of starter cultures and fermentation conditions based on desired structure-function relationships in different food matrices. The mechanism of action of in situ generated EPS is then highlighted with an emphasis on different meat products. In the process, this review also highlights food additives currently used in meat production that could in the future be replaced by in situ EPS-forming LAB.
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Affiliation(s)
- Myriam Loeffler
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstrasse 21/25, Stuttgart, Germany
| | - Jonas Hilbig
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstrasse 21/25, Stuttgart, Germany
| | - Lina Velasco
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstrasse 21/25, Stuttgart, Germany
| | - Jochen Weiss
- Department of Food Material Science, Institute of Food Science and Biotechnology, University of Hohenheim, Garbenstrasse 21/25, Stuttgart, Germany
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Li S, Ma Y, Ji T, Sameen DE, Ahmed S, Qin W, Dai J, Li S, Liu Y. Cassava starch/carboxymethylcellulose edible films embedded with lactic acid bacteria to extend the shelf life of banana. Carbohydr Polym 2020; 248:116805. [DOI: 10.1016/j.carbpol.2020.116805] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/18/2020] [Accepted: 07/20/2020] [Indexed: 10/23/2022]
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Isolation of Bile Salt Hydrolase and Uricase Producing Lactobacillus brevis SF121 from Pak Sian Dong (Fermented Spider Plant) for using as Probiotics. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2020. [DOI: 10.22207/jpam.14.3.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The interesting application of bile salt hydrolase enzyme is reduction of cholesterol in serum and amelioration lipid profile. While uricase enzyme can be applied to convert insoluble uric acid to be soluble form and excrete from the body. Probiotics are living organisms with generally know that they can provide beneficial effects to their host. Several reports show that probiotic bacteria with bile salt hydrolase and uricase can improve hypercholesterolemia and hyperuricemia patient. The novel isolate of Lactobacillus from Pak Sian Dong in this study is identified as L. brevis SF121 and probably use as probiotic bacteria in the future. However, this isolate still need further experiments to investigate and improve properties of probiotics. Moreover, this finding suggests that Pak Sian Dong or fermented spider plant can be designated as a good source for probiotic screening and also defines as health-promoting diet.
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Milanović V, Osimani A, Garofalo C, Belleggia L, Maoloni A, Cardinali F, Mozzon M, Foligni R, Aquilanti L, Clementi F. Selection of cereal-sourced lactic acid bacteria as candidate starters for the baking industry. PLoS One 2020; 15:e0236190. [PMID: 32702068 PMCID: PMC7377444 DOI: 10.1371/journal.pone.0236190] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/30/2020] [Indexed: 01/17/2023] Open
Abstract
The quality of sourdough bread mainly depends on metabolic activities of lactic acid bacteria (LAB). The exopolysaccharides (EPS) produced by LAB affect positively the technological and nutritional properties of the bread, while phytases improve the bioavailability of the minerals by reducing its phytate content. In the present study, a pool of 152 cereal-sourced LAB were screened for production of phytases and EPS for potential use as sourdough starter cultures for the baking industry. There was large heterogeneity in the phytase activity observed among the screened isolates, with 95% showing the ability to degrade sodium phytate on plates containing Sourdough Simulation Medium (SSM). The isolates Lactobacillus brevis LD65 and Lactobacillus plantarum PB241 showed the highest enzymatic activity, while the isolates ascribed to Weissella confusa were characterized by low or no phytase activity. Only 18% of the screened LAB produced EPS, which were distinguished as ropy or mucoid phenotypes on SSM supplemented with sucrose. Almost all the EPS producers carried one or more genes (epsD/E and/or epsA) involved in the production of heteropolysaccharides (HePS), whereas the isolates ascribed to Leuconostoc citreum and W. confusa carried genes involved in the production of both HePS and homopolysaccharides (HoPS). Monosaccharide composition analysis of the EPS produced by a selected subset of isolates revealed that all the HePS included glucose, mannose, and galactose, though at different ratios. Furthermore, a few isolates ascribed to L. citreum and W. confusa and carrying the gtf gene produced β-glucans after fermentation in an ad hoc formulated barley flour medium. Based on the overall results collected, a subset of candidate sourdough starter cultures for the baking industry was selected, including Lb. brevis LD66 and L. citreum PB220, which showed high phytase activity and positive EPS production.
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Affiliation(s)
- Vesna Milanović
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Andrea Osimani
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Cristiana Garofalo
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Luca Belleggia
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Antonietta Maoloni
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Federica Cardinali
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Massimo Mozzon
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Roberta Foligni
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
| | - Lucia Aquilanti
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
- * E-mail: (FC); (LA)
| | - Francesca Clementi
- Dipartimento di Scienze Agrarie, Alimentari ed Ambientali, Università Politecnica delle Marche, Ancona, Italy
- * E-mail: (FC); (LA)
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Franco W, Pérez-Díaz IM, Connelly L, Diaz JT. Isolation of Exopolysaccharide-Producing Yeast and Lactic Acid Bacteria from Quinoa ( Chenopodium Quinoa) Sourdough Fermentation. Foods 2020; 9:foods9030337. [PMID: 32183117 PMCID: PMC7142942 DOI: 10.3390/foods9030337] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/04/2020] [Accepted: 03/09/2020] [Indexed: 12/13/2022] Open
Abstract
Quinoa, a nutritional grain, can be used as an ingredient in gluten-free sourdoughs. This study characterizes quinoa flour spontaneous fermentation with emphasis in the isolation of exopolysaccharide (EPS) producer bacteria. Real, red and black grains were studied. Dough yield, microbiota composition and fermentation biochemistry were determined for a total of 36 quinoa flour fermentations. The fermentation biochemistry was monitored by high-performance liquid chromatography (HPLC) analysis, pH measurement and titratable acidity. Changes in the microbiota were monitored by plating on deMann Rogosa and Sharp 5 agar (MRS5) and yeast and mold agar (YMA) plates and with metagenetic analysis. The ability to produce exopolysaccharides was screened in selected lactic acid bacteria (LAB) isolates. Production of organic acids in the spontaneous fermentation dropped the pH to 4.0 ± 0.3. The community of presumptive LAB reached 8.37 ± 0.01 log colony forming units (CFU)/mL by day 8 of back-slopped fermentations. The microbiota was composed of Lactobacillus, Enterococcus, Leuconostoc, Lactococcus, Pediococcus and Weissella. P. pentosaceous,L. citreum and W. cibaria were able to produce EPS in a starch-rich medium. P. pentosaceous showed higher exopolysaccharide yield, rapid acidifying kinetics and was able to drop the dough broth pH to values below 4.0 and a positive fermentation quotient after 24 h of incubation. Therefore, the bacterium might be a potential candidate for quinoa sourdough production.
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Affiliation(s)
- Wendy Franco
- Departamento de Ingeniería Química y Bioprocesos, Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Ave. Vicuña Mackena 4860, Santiago 7820436, Chile
- Departamento Ciencias de la Salud, Carrera de Nutrición y Dietética. Facultad de Medicina, Pontificia Universidad Católica de Chile, Ave. Vicuña Mackena 4860, Santiago 7820436, Chile
- Correspondence: ; Tel.: +56-966745883
| | - Ilenys M. Pérez-Díaz
- U.S. Department of Agriculture, Agricultural Research Service, SAA Food Science Research Unit, 322 Schaub Hall, Box 7624, North Carolina State University, Raleigh, NC 27695, USA;
| | - Lauren Connelly
- Department of Food, Bioprocessing and Nutrition Sciences, 400 Dan Allen Drive, North Carolina State University, Raleigh, NC 27696, USA; (L.C.); (J.T.D.)
| | - Joscelin T. Diaz
- Department of Food, Bioprocessing and Nutrition Sciences, 400 Dan Allen Drive, North Carolina State University, Raleigh, NC 27696, USA; (L.C.); (J.T.D.)
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Structural analysis and properties of dextran produced by Weissella confusa and the effect of different cereals on its rheological characteristics. Int J Biol Macromol 2020; 143:305-313. [DOI: 10.1016/j.ijbiomac.2019.12.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/15/2019] [Accepted: 12/05/2019] [Indexed: 12/14/2022]
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15
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Wei Y, Li F, Li L, Huang L, Li Q. Genetic and Biochemical Characterization of an Exopolysaccharide With in vitro Antitumoral Activity Produced by Lactobacillus fermentum YL-11. Front Microbiol 2019; 10:2898. [PMID: 31921073 PMCID: PMC6929415 DOI: 10.3389/fmicb.2019.02898] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 12/02/2019] [Indexed: 12/20/2022] Open
Abstract
In the present study, the whole genome sequence of Lactobacillus fermentum YL-11, a novel exopolysaccharide (EPS)-producing lactic acid bacteria (LAB) strain isolated from fermented milk, was determined. Genetic information and the synthetic mechanism of the EPS in L. fermentum YL-11 were identified based on bioinformatic analysis of the complete genome. The purified EPS of YL-11 mainly comprised galactose (48.0%), glucose (30.3%), mannose (11.8%), and arabinose (6.0%). In vitro, the EPS from YL-11 exhibited inhibition activity against HT-29 and Caco-2 colon cancer cells, suggesting that EPS from strain YL-11 might be used as an antitumoral agent. EPS at 600 and 800 μg/mL achieved inhibition rates of 46.5 ± 3.5% and 45.6 ± 6.1% to HT-29 cells, respectively. The genomic information about L. fermentum YL-11 and the antitumoral activity of YL-11 EPS provide a theoretical foundation for the future application of EPS in the food and pharmaceutical industries.
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Affiliation(s)
- Yunlu Wei
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
| | - Fei Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
| | - Le Li
- Department of Environmental and Quality Inspection, Chongqing Chemical Industry Vocational College, Chongqing, China
| | - Linlin Huang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
| | - Quanhong Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,National Engineering Research Center for Fruit and Vegetable Processing, Beijing, China
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Kowalkowski T, Krakowska A, Złoch M, Hrynkiewicz K, Buszewski B. Cadmium-affected synthesis of exopolysaccharides by rhizosphere bacteria. J Appl Microbiol 2019; 127:713-723. [PMID: 31211899 DOI: 10.1111/jam.14354] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 05/20/2019] [Accepted: 06/12/2019] [Indexed: 01/09/2023]
Abstract
AIM Study is focused on the influence of cadmium addition to growth media on production yield, their size and molecular mass of exopolysaccharides (EPS) synthesized by three rhizosphere bacteria strains. Inhibition of bacterial growth by increasing concentrations of Cd2+ was also analysed. METHODS AND RESULTS The highest impact of Cd2+ was noticed on the growth of Arthrobacter sp. and Rhizobium metallidurans. Chryseobacterium sp. and Arthrobacter sp. produced significantly lower when compared to R. metallidurans amounts of EPS under the influence of Cd2+ . In all bacterial strains both size and molecular mass decreased after addition of Cd2+ to growth media. It causes a change in EPS conformation to more planar, which minimizes the volume of liquid in the interglobular space next to the bacterial wall. Results confirmed strong effect of Cd2+ on the structure and synthesis of bacterial EPS what can be a key factor in the interactions between rhizosphere bacteria and host plants in heavy metal polluted soils. CONCLUSION This work proves that due to the presence of cadmium ions, the size and conformation of EPS produced by selected bacterial strains is changed to minimize their impact on cell. We suggest that shifting in EPS conformation from bigger globular particles to the smaller planar ones could be one of the probable mechanisms of Cd resistance in metallotolerant bacteria, and finally explain increased efficiency of heavy metal phytoextraction by EPS-producing plant growth-promoting micro-organisms. SIGNIFICANCE AND IMPACT OF THE STUDY One of the most promising remediation technique for Cd-contaminated areas is the phytoremediation in which rhizosphere bacteria play an important role by protecting plants' roots from toxic condition thus enhancing efficiency of intake. EPS secretion by bacteria is one of the most common mechanisms to protect the cell from impact of unpleasant environmental conditions, for example, toxicity of heavy metals like Cd.
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Affiliation(s)
- T Kowalkowski
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.,Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - A Krakowska
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.,Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - M Złoch
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.,Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
| | - K Hrynkiewicz
- Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Toruń, Poland
| | - B Buszewski
- Faculty of Chemistry, Nicolaus Copernicus University, Toruń, Poland.,Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń, Poland
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17
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Sánchez J, Vegas C, Zavaleta AI, Esteve-Zarzoso B. Predominance of Lactobacillus plantarum Strains in Peruvian Amazonian Fruits. Pol J Microbiol 2019; 68:127-137. [PMID: 31050261 PMCID: PMC7256758 DOI: 10.21307/pjm-2019-015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2019] [Indexed: 12/22/2022] Open
Abstract
The objective of this research was the identification and characterization of lactic acid bacteria (LAB) isolated from Peruvian Amazonian fruits. Thirty-seven isolates were obtained from diverse Amazonian fruits. Molecular characterization of the isolates was performed by ARDRA, 16S-23S ITS RFLP and rep-PCR using GTG5 primers. Identification was carried out by sequencing the 16S rDNA gene. Phenotypic characterization included nutritional, physiological and antimicrobial resistance tests. Molecular characterization by Amplified Ribosomal DNA Restriction Analysis (ARDRA) and 16S-23S ITS RFLP resulted in four restriction profiles while GTG5 analysis showed 14 banding patterns. Based on the 16S rDNA gene sequence, the isolates were identified as Lactobacillus plantarum (75.7%), Weissella cibaria (13.5%), Lactobacillus brevis (8.1%), and Weissella confusa (2.7%). Phenotypic characterization showed that most of the isolates were homofermentative bacilli, able to ferment glucose, maltose, cellobiose, and fructose and grow in a broad range of temperatures and pH. The isolates were highly susceptible to ampicillin, amoxicillin, clindamycin, chloramphenicol, erythromicyn, penicillin, and tetracycline and showed great resistance to kanamycin, gentamycin, streptomycin, sulfamethoxazole/trimethoprim, and vancomycin. No proteolytic or amylolytic activity was detected. L. plantarum strains produce lactic acid in higher concentrations and Weissella strains produce exopolymers only from sucrose. Molecular methods allowed to accurately identify the LAB isolates from the Peruvian Amazonian fruits, while phenotypic methods provided information about their metabolism, physiology and other characteristics that may be useful in future biotechnological processes. Further research will focus especially on the study of L. plantarum strains.
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Affiliation(s)
- Johanna Sánchez
- Laboratorio de Biología Molecular, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos , Lima , Perú
| | - Carlos Vegas
- Laboratorio de Biología Molecular, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos , Lima , Perú
| | - Amparo Iris Zavaleta
- Laboratorio de Biología Molecular, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos , Lima , Perú
| | - Braulio Esteve-Zarzoso
- Departament de Bioquímica i Biotecnologia, Facultat d' Enologia, Universitat Rovira i Virgili , Tarragona , Spain
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18
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Kansandee W, Moonmangmee D, Moonmangmee S, Itsaranuwat P. Characterization and Bifidobacterium sp. growth stimulation of exopolysaccharide produced by Enterococcus faecalis EJRM152 isolated from human breast milk. Carbohydr Polym 2019; 206:102-109. [DOI: 10.1016/j.carbpol.2018.10.117] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/30/2018] [Accepted: 10/30/2018] [Indexed: 01/10/2023]
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19
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Câmara SP, Dapkevicius A, Riquelme C, Elias RB, Silva C, Malcata FX, Dapkevicius M. Potential of lactic acid bacteria from Pico cheese for starter culture development. FOOD SCI TECHNOL INT 2019; 25:303-317. [PMID: 30646760 DOI: 10.1177/1082013218823129] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Autochthonous lactic acid bacteria may provide a means of promoting the quality and safety of traditional fermented food products, in particular, artisanal cheeses. Pico cheese is an artisanal, dairy specialty of the Azores in risk of disappearing. Efforts to maintain its quality to the requirements of the modern markets are, thus, necessary. Lactic acid bacteria were isolated from artisanal Pico cheese, identified by sequencing of the 16S rRNA gene, and their potential as starter cultures was evaluated by studying their acidification ability, enzymatic activities (caseinolysis, lipolysis and API-ZYM profile), diacetyl and expolysaccharide production, autolysis, antimicrobial activity against Listeria monocytogenes ATCC 7466, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 29523, Pseudomonas aeruginosa ATCC 27853 and Clostridium perfringens ATCC 8357, sensory evaluation of odour formation in milk, syneresis and firmness of the curd. Several of the studied lactic acid bacteria isolates showed interesting properties for practical application as starters in artisanal cheese production. The isolates with the highest number of positive traits and, therefore, the most promising for starter development were Lactococcus lactis ssp. lactis L1C21M1, Lactobacillus paracasei L1B1E3, Leuconostoc pseudomesenteroides L1C1E6, Lactobacillus casei L1A1E5 and L1C1E8.
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Affiliation(s)
- S P Câmara
- 1 Food Technology Group, Institute of Agricultural and Environmental Research and Technology (IITA-A), University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal.,2 Faculty of Agricultural and Environmental Sciences, University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
| | - A Dapkevicius
- 1 Food Technology Group, Institute of Agricultural and Environmental Research and Technology (IITA-A), University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal.,3 Higher School of Technologies, University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
| | - C Riquelme
- 1 Food Technology Group, Institute of Agricultural and Environmental Research and Technology (IITA-A), University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
| | - R B Elias
- 2 Faculty of Agricultural and Environmental Sciences, University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal.,4 CE3C - Centre for Ecology, Evolution and Environmental Changes/Azorean Biodiversity Group and University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
| | - Ccg Silva
- 1 Food Technology Group, Institute of Agricultural and Environmental Research and Technology (IITA-A), University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal.,2 Faculty of Agricultural and Environmental Sciences, University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
| | - F X Malcata
- 5 LEPABE/Department of Chemical Engineering, University of Porto, Oporto, Portugal
| | - Mlne Dapkevicius
- 1 Food Technology Group, Institute of Agricultural and Environmental Research and Technology (IITA-A), University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal.,2 Faculty of Agricultural and Environmental Sciences, University of the Azores, Pico da Urze, Angra do Heroísmo, Portugal
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20
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Adamu‐Governor OL, Shittu TA, Afolabi OR, Uzochukwu SVA. Screening for gum-producing Lactic acid bacteria in Oil palm ( Elaeis guineensis) and raphia palm ( Raphia regalis) sap from South-West Nigeria. Food Sci Nutr 2018; 6:2047-2055. [PMID: 30510706 PMCID: PMC6261219 DOI: 10.1002/fsn3.750] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/25/2018] [Indexed: 11/12/2022] Open
Abstract
Lactic acid bacteria have wide applications in food processing. Lactic acid bacteria produced exopolysaccharides (EPS) which could be used as possible replacer for commercial stabilizer and thickeners produced by nonfood grade bacteria. Seventy-two samples of Oil and Raphia palm sap were collected in eighteen locations across South-Western Nigeria and screened for exopolysaccharide production in 6% sucrose agar using streaked plate method. Four hundred EPS-producing bacteria (EPB) isolated were clustered based on morphological characteristics into two broad groups and preliminary screened for EPS-producing capacity. Twenty representative of EPB were selected from the broad groups for tentative identification by API 50CHL and 10 high yielding EPB were selected for large-scale EPS production. Each strain was inoculated into 6% sucrose broth with 3% (v/v) preculture grown overnight in a 1.5 ml flask and incubated at 37°C for 72 hr. The EPSs were purified and freeze-dried prior to quantification of yields. EPS-producing bacteria were identified as Leuconostoc lactis, Lactobacillus fermentum, Lactobacillus delbrueckii ssp. lactis, L. delbrueckii ssp. delbrueckii, Lactobacillus acidophilus, Lactobacillus plantarum, Lactobacillus crispatus, and Leuconostoc mesenteroides ssp. mesenteroides/dextranicum. EPS yield ranged from 132-810.75 mg/L and EPS-producing potential of lactic acid bacteria (LAB) strains ranged; 36% (132-245 mg/L), 36% (250-460 mg/L), and 28% (461-820 mg/L). L. plantarum had the highest EPS yield of 810.75 mg/L whereas L. crispatus had the least yield 242.5 mg/L. These results suggest that majority of LAB in palm wine saps are gum-producing bacteria. Leuconostoc and Lactobacillus were the most abundant LAB found in this study while L. plantarum could have applications as potential starter cultures for the production of exopolysaccharides (EPS) at industrial level.
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Affiliation(s)
- Oniovosa Leonard Adamu‐Governor
- Department of Biological ScienceYaba College of TechnologyYabaNigeria
- Department of Food Science and TechnologyFederal University of AgricultureAbeokutaNigeria
| | - Taofik A. Shittu
- Department of Food Science and TechnologyFederal University of AgricultureAbeokutaNigeria
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21
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Nambiar RB, Sellamuthu PS, Perumal AB, Sadiku ER, Phiri G, Jayaramudu J. Characterization of an exopolysaccharide produced by Lactobacillus plantarum HM47 isolated from human breast milk. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.07.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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22
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Thai Fermented Foods as a Versatile Source of Bioactive Microorganisms—A Comprehensive Review. Sci Pharm 2018; 86:scipharm86030037. [DOI: 10.3390/scipharm86030037] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/08/2018] [Accepted: 09/09/2018] [Indexed: 12/30/2022] Open
Abstract
Fermented foods are known for several health benefits, and they are generally used among the Asian people. Microorganisms involved in the fermentation process are most responsible for the final quality of the food. Traditional fermented (spontaneous fermentation) foods are a versatile source of bioactive molecules and bioactive microbes. Several reports are available regarding the isolation and characterization of potent strains from traditional fermented foods. A collection of information for easy literature analysis of bioactive microbes derived from Thai fermented food is not yet available. The current manuscript compiled information on bioactive (antimicrobial- and enzyme-producing probiotic) microbes isolated from naturally fermented Thai foods.
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Ruiz P, Celada L, Seseña S, Palop ML. Leuconostoc mesenteroides in the brewing process: A controversial role. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.03.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
Probiotics have become highly recognized as supplements for humans and animals because of their beneficial effects on health and well-being. The present review aims to provide an overview of different steps through which microbial strains become applicable probiotics in food and/or feed industries. Isolation of potential probiotic strains is the first step. Lactic acid bacteria are the most frequently used microorganisms as probiotics, which can be isolated from human, animal, plant, and environment. The next steps are identification of the isolates and characterization of them based on the main selection criteria for any potential probiotic microorganism, including resistance to gastric acidity and bile salt, adherence to mucus and/or intestinal epithelial cells and cell lines, and antimicrobial and antagonism activity against potentially pathogenic microbes. There are additional probiotic properties that may be considered for selection of probiotic strains with specific effects, such as cholesterol reduction ability, antioxidant activity, or cytotoxic effect against cancer cells. However, a potential probiotic does not need to fulfill all such selection criteria. As the last step, safety status of probiotics for humans is verified by taxonomy clarification, in vitro and in vivo tests, human trials, and genome sequencing.
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Affiliation(s)
- Parisa Shokryazdan
- a Institute of Tropical Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia.,b Agriculture Biotechnology Research Institute of Iran , East and North-East Branch , Mashhad , Iran
| | - Mohammad Faseleh Jahromi
- a Institute of Tropical Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia.,b Agriculture Biotechnology Research Institute of Iran , East and North-East Branch , Mashhad , Iran
| | - Juan Boo Liang
- a Institute of Tropical Agriculture , Universiti Putra Malaysia , Serdang , Selangor , Malaysia
| | - Yin Wan Ho
- c Institute of Bioscience , Universiti Putra Malaysia , Serdang , Selangor , Malaysia
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25
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Jeong D, Kim DH, Kang IB, Kim H, Song KY, Kim HS, Seo KH. Characterization and antibacterial activity of a novel exopolysaccharide produced by Lactobacillus kefiranofaciens DN1 isolated from kefir. Food Control 2017. [DOI: 10.1016/j.foodcont.2017.02.033] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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26
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Zeidan AA, Poulsen VK, Janzen T, Buldo P, Derkx PMF, Øregaard G, Neves AR. Polysaccharide production by lactic acid bacteria: from genes to industrial applications. FEMS Microbiol Rev 2017; 41:S168-S200. [DOI: 10.1093/femsre/fux017] [Citation(s) in RCA: 146] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 03/29/2017] [Indexed: 01/14/2023] Open
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27
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Ruiz Rodríguez L, Vera Pingitore E, Rollan G, Martos G, Saavedra L, Fontana C, Hebert E, Vignolo G. Biodiversity and technological potential of lactic acid bacteria isolated from spontaneously fermented amaranth sourdough. Lett Appl Microbiol 2016; 63:147-54. [DOI: 10.1111/lam.12604] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 05/06/2016] [Accepted: 06/06/2016] [Indexed: 11/27/2022]
Affiliation(s)
- L. Ruiz Rodríguez
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - E. Vera Pingitore
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - G. Rollan
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - G. Martos
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - L. Saavedra
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - C. Fontana
- Istituto di Microbiologia-Centro Ricerche Biotecnologiche; Università Cattolica del Sacro Cuore; Piacenza-Cremona Italy
| | - E.M. Hebert
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
| | - G. Vignolo
- Centro de Referencia para Lactobacilos (CERELA), CONICET; Tucumán Argentina
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Dash HR, Das S. Interaction between mercuric chloride and extracellular polymers of biofilm-forming mercury resistant marine bacterium Bacillus thuringiensis PW-05. RSC Adv 2016. [DOI: 10.1039/c6ra21069d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The interaction mechanism of mercury (Hg2+) with extracellular polymers (EPS) produced from a mercury resistant marine bacteriumBacillus thuringiensisPW-05 was studied.
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Affiliation(s)
- Hirak R. Dash
- Laboratory of Environmental Microbiology and Ecology (LEnME)
- Department of Life Science
- National Institute of Technology
- Rourkela-769 008
- India
| | - Surajit Das
- Laboratory of Environmental Microbiology and Ecology (LEnME)
- Department of Life Science
- National Institute of Technology
- Rourkela-769 008
- India
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29
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Jaouani I, Abbassi M, Ribeiro S, Khemiri M, Mansouri R, Messadi L, Silva C. Safety and technological properties of bacteriocinogenic enterococci isolates from Tunisia. J Appl Microbiol 2015. [DOI: 10.1111/jam.12916] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- I. Jaouani
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Tunis Tunisia
- Faculté des Sciences de Bizerte; Université de Carthage; Bizerte Tunisia
| | - M.S. Abbassi
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Tunis Tunisia
| | - S.C. Ribeiro
- CITA-A, Centro de Investigação e Tecnologias Agrárias dos Açores; Universidade dos Açores; Angra do Heroísmo Portugal
| | - M. Khemiri
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Tunis Tunisia
| | - R. Mansouri
- Laboratory of Bacteriological Research; Institute of Veterinary Research of Tunisia; Tunis Tunisia
| | - L. Messadi
- Department of Microbiology and Immunology; National School of Veterinary Medicine; La Manouba University; SidiThabet Tunisia
| | - C.C.G. Silva
- CITA-A, Centro de Investigação e Tecnologias Agrárias dos Açores; Universidade dos Açores; Angra do Heroísmo Portugal
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Djukić-Vuković AP, Mojović LV, Semenčenko VV, Radosavljević MM, Pejin JD, Kocić-Tanackov SD. Effective valorisation of distillery stillage by integrated production of lactic acid and high quality feed. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.07.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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31
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Cholesterol-lowering potentials of lactic acid bacteria based on bile-salt hydrolase activity and effect of potent strains on cholesterol metabolism in vitro and in vivo. ScientificWorldJournal 2014; 2014:690752. [PMID: 25538960 PMCID: PMC4235975 DOI: 10.1155/2014/690752] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 09/19/2014] [Indexed: 11/30/2022] Open
Abstract
This study collected different probiotic isolates from animal and plant sources to evaluate the bile-salt hydrolase activity of probiotics in vitro. The deconjugation potential of bile acid was determined using high-performance liquid chromatography. HepG2 cells were cultured with probiotic strains with high BSH activity. The triglyceride (TG) and apolipoprotein B (apo B) secretion by HepG2 cells were evaluated. Our results show that the BSH activity and bile-acid deconjugation abilities of Pediococcus acidilactici NBHK002, Bifidobacterium adolescentis NBHK006, Lactobacillus rhamnosus NBHK007, and Lactobacillus acidophilus NBHK008 were higher than those of the other probiotic strains. The cholesterol concentration in cholesterol micelles was reduced within 24 h. NBHK007 reduced the TG secretion by 100% after 48 h of incubation. NBHK002, NBHK006, and NBHK007 could reduce apo B secretion by 33%, 38%, and 39%, respectively, after 24 h of incubation. The product PROBIO S-23 produced a greater decrease in the total concentration of cholesterol, low-density lipoprotein, TG, and thiobarbituric acid reactive substance in the serum or livers of hamsters with hypercholesterolemia compared with that of hamsters fed with a high-fat and high-cholesterol diet. These results show that the three probiotic strains of lactic acid bacteria are better candidates for reducing the risk of cardiovascular disease.
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32
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Heperkan D, Daskaya-Dikmen C, Bayram B. Evaluation of lactic acid bacterial strains of boza for their exopolysaccharide and enzyme production as a potential adjunct culture. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.06.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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33
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Optimization of Exopolysaccharide Overproduction byLactobacillus confususin Solid State Fermentation under High Salinity Stress. Biosci Biotechnol Biochem 2014; 76:912-7. [DOI: 10.1271/bbb.110905] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Joshi SR, Koijam K. Exopolysaccharide Production by a Lactic Acid Bacteria, Leuconostoc lactis Isolated from Ethnically Fermented Beverage. NATIONAL ACADEMY SCIENCE LETTERS-INDIA 2014. [DOI: 10.1007/s40009-013-0203-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Ribeiro SC, Coelho MC, Todorov SD, Franco BDGM, Dapkevicius MLE, Silva CCG. Technological properties of bacteriocin-producing lactic acid bacteria isolated from Pico cheese an artisanal cow's milk cheese. J Appl Microbiol 2013; 116:573-85. [PMID: 24206097 DOI: 10.1111/jam.12388] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 10/18/2013] [Accepted: 11/05/2013] [Indexed: 12/19/2022]
Abstract
AIM Evaluate technologically relevant properties from bacteriocin-producing strains to use as starter/adjunct cultures in cheese making. METHODS AND RESULTS Eight isolates obtained from Pico cheese produced in Azores (Portugal) were found to produce bacteriocins against Listeria monocytogenes and three isolates against Clostridium perfringens. They were identified as Lactococcus lactis and Enterococcus faecalis and submitted to technological tests: growth at different conditions of temperature and salt, acid production, proteolysis, lipolysis, coexistence, enzymatic profile and autolytic capacity. Safety evaluation was performed by evaluating haemolytic, gelatinase and DNase activity, resistance to antibiotics and the presence of virulence genes. Some isolates presented good technological features such as high autolytic activity, acid and diacetyl production. Lactococcus lactis was negative for all virulence genes tested and inhibit the growth of all Lactic acid bacteria (LAB) isolates. Enterococci were positive for the presence of some virulence genes, but none of the isolates were classified as resistant to important antibiotics. CONCLUSIONS The bacteriocin-producing Lc. lactis present good potential for application in food as adjunct culture in cheese production. The study also reveals good technological features for some Enterococcus isolates. SIGNIFICANCE AND IMPACT OF THE STUDY Bacteriocin-producing strains presented important technological properties to be exploited as new adjunct culture for the dairy industry, influencing flavour development and improve safety.
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Affiliation(s)
- S C Ribeiro
- Centro de Investigação e Tecnologias Agrárias dos Açores (CITA-A), Universidade dos Açores, Angra do Heroísmo, Portugal
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36
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Novel dextran from Pediococcus pentosaceus CRAG3 isolated from fermented cucumber with anti-cancer properties. Int J Biol Macromol 2013; 62:352-7. [PMID: 24095664 DOI: 10.1016/j.ijbiomac.2013.09.043] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 09/20/2013] [Accepted: 09/26/2013] [Indexed: 11/21/2022]
Abstract
The porous branched dextran of molecular mass 2.93 × 10(5) Da with 50% overall yield (4.5mg/ml) was produced from Pediococcus pentosaceus CRAG3 (GenBank ID: JX679020), a novel isolate from fermented cucumber. It contained glucose monomers linked through 75% α-(1,6) linkage with 25% (α-1,3) branching as displayed by spectroscopic analysis. The peak analysis showed α-(1,3) branching after every five glucose units of main chain. In vitro cytotoxicity analysis of dextran displayed anti-cancer activity against cervical cancer (HeLa) and colon cancer (HT29) cell lines opening new horizons in its pharmaceutical applications. Dextran showed enhanced growth of macrophage lines revealing its biocompatible nature.
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37
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Zhou W, Min M, Hu B, Ma X, Liu Y, Wang Q, Shi J, Chen P, Ruan R. Filamentous fungi assisted bio-flocculation: A novel alternative technique for harvesting heterotrophic and autotrophic microalgal cells. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.01.030] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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38
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Ko KH, Liu W, Lee HH, Yin J, Kim IC. Biological and Functional Characteristics of Lactic Acid Bacteria in Different Kimchi. ACTA ACUST UNITED AC 2013. [DOI: 10.3746/jkfn.2013.42.1.089] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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Hongpattarakere T, Cherntong N, Wichienchot S, Kolida S, Rastall RA. In vitro prebiotic evaluation of exopolysaccharides produced by marine isolated lactic acid bacteria. Carbohydr Polym 2012; 87:846-852. [DOI: 10.1016/j.carbpol.2011.08.085] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 08/24/2011] [Indexed: 01/28/2023]
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40
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Dextransucrase from the mutant of Pediococcus pentosaceus (PPm) is more stable than the wild type. 3 Biotech 2011; 1:199-205. [PMID: 22558538 PMCID: PMC3339597 DOI: 10.1007/s13205-011-0018-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 07/13/2011] [Indexed: 10/29/2022] Open
Abstract
A comparative study on both wild type and mutant of Pediococcus pentosaceus for dextransucrase activity, its stability, dextran synthesizing activity, antibiotic sensitivity and carbohydrate utilization was performed. The wild type P. pentosaceus had specific activity of 0.58 U/mg whereas the mutant showed that of 1.0 U/mg with 72% enhancement. The antibiogram of 27 antibiotics tested against mutant showed significant differences with 9 antibiotics when compared to wild type. In carbohydrate fermentation profile, trehalose, galactose, maltose, lactose and fructose are metabolized by both the strains, but weakly in case of mutant. Stabilization of purified dextransucrase from wild type and mutant with various stabilizers was studied at 30 and 4 °C. Both enzymes were more stable at 4 °C. Among various stabilizers such as dextran (100 kDa, 10 μg/ml), glycerol (0.5%, v/v), PEG 8000 (10 μg/ml) and Tween 80 (0.5%, v/v), Tween 80 provided maximum stabilization at 4 and 30 °C. The mutant showed better stabilization than that of the wild type at both 30 and 4 °C. The loss of activity at 30 °C after 24 h in wild type and mutant in the presence of Tween 80 was only 34 and 32%, respectively, whereas the loss of activity in control of wild type and mutant was 76 and 59%, respectively. After 15 days at 4 °C, the loss of activity in control of wild type and mutant in the presence of Tween 80 was only 15 and 8%, respectively, whereas at 30 °C, the loss of activity in control of wild type and mutant was 49 and 42% respectively. Half-life of the enzyme with Tween 80 was 28.5 and 33.5 h for wild type and mutant, respectively, at 30 °C and 52.1 and 106.6 days for wild type and mutant respectively, at 4 °C.
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41
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Danilović B, Joković N, Petrović L, Veljović K, Tolinački M, Savić D. The characterisation of lactic acid bacteria during the fermentation of an artisan Serbian sausage (Petrovská Klobása). Meat Sci 2011; 88:668-74. [DOI: 10.1016/j.meatsci.2011.02.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Revised: 02/05/2011] [Accepted: 02/22/2011] [Indexed: 11/16/2022]
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42
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Kocková M, Valík Ľ. POTENTIAL OF CEREALS AND PSEUDOCEREALS FOR LACTIC ACID FERMENTATIONS. POTRAVINARSTVO 2011. [DOI: 10.5219/127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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43
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Shukla S, Goyal A. 16S rRNA-Based Identification of a Glucan-Hyperproducing Weissella confusa. Enzyme Res 2011; 2011:250842. [PMID: 21603260 PMCID: PMC3092518 DOI: 10.4061/2011/250842] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 01/21/2011] [Indexed: 11/30/2022] Open
Abstract
A gram-positive, nonmotile, irregular, short, rod-shaped new strain of Weissella confusa bacterium was isolated from fermented cabbage. The isolate was physiologically and biochemically characterised. The 16S rDNA was amplified by polymerase chain reaction (PCR). The isolate was identified as Weissella confusa (GenBank accession number: GU138518.1) based on nucleotide homology and phylogenetic analysis. The isolate produces glucansucrase when grown in sucrose-supplemented culture medium which catalyses glucan formation. This novel isolate possesses high capacity of industrial use due to its high productivity of glucan (34 mg/mL) as compared to other strains reported. The optimum temperature for glucansucrase production was 25°C. The shaking condition gave an enzyme activity of 6.1 U/mL which was 1.5 times higher than that given by static condition (4.1 U/mL). The temperature 35°C, pH 5.4, and ionic strength 10-20 mM were optimum for enzyme assay. This investigation unraveled the abundance of industrially valuable microflora of the north east India.
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Affiliation(s)
- Shraddha Shukla
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
| | - Arun Goyal
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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44
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Structure and functions of exopolysaccharide produced by gut commensal Lactobacillus reuteri 100-23. ISME JOURNAL 2011; 5:1115-24. [PMID: 21248858 DOI: 10.1038/ismej.2010.201] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Lactobacillus reuteri strain 100-23 together with a Lactobacillus-free mouse model, provides a system with which the molecular traits underpinning bacterial commensalism in vertebrates can be studied. A polysaccharide was extracted from sucrose-containing liquid cultures of strain 100-23. Chemical analysis showed that this exopolysaccharide was a levan (β-2, 6-linked fructan). Mutation of the fructosyl transferase (ftf) gene resulted in loss of exopolysaccharide production. The ftf mutant was able to colonise the murine gastrointestinal tract in the absence of competition, but colonisation was impaired in competition with the wild type. Biofilm formation by the mutant on the forestomach epithelial surface was not impaired and the matrix between cells was indistinguishable from that of the wild type in electron micrographs. Colonisation of the mouse gut by the wild-type strain led to increased proportions of regulatory T cells (Foxp3+) in the spleen, whereas colonisation by the ftf mutant did not. Survival of the mutant in sucrose-containing medium was markedly reduced relative to the wild type. Comparison of the genomic ftf loci of strain 100-23 with other L. reuteri strains suggested that the ftf gene was acquired by lateral gene transfer early in the evolution of the species and subsequently diversified at accelerated rates. Levan production by L. reuteri 100-23 may represent a function acquired by the bacterial species for life in moderate to high-sucrose extra-gastrointestinal environments that has subsequently been diverted to novel uses, including immunomodulation, that aid in colonisation of the murine gut.
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45
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Behare PV, Singh R, Tomar SK, Nagpal R, Kumar M, Mohania D. Effect of exopolysaccharide-producing strains of Streptococcus thermophilus on technological attributes of fat-free lassi. J Dairy Sci 2010; 93:2874-9. [PMID: 20630204 DOI: 10.3168/jds.2009-2300] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Accepted: 02/25/2010] [Indexed: 11/19/2022]
Abstract
Sixty-four exopolysaccharide-producing thermophilic lactic acid bacteria (LAB) were isolated from traditionally made Indian fermented milk products. On the basis of morphological and biochemical tests, these isolates were identified as the species of Lactobacillus, Streptococcus, and Enterococcus genera. Initial screening for technological attributes revealed that Streptococcus thermophilus IG16 was a promising isolate, and produced both capsular and ropy polysaccharides at the concentration of 211 mg/L. Exopolysaccharide produced by IG16 was a heteropolysaccharide containing rhamnose and galactose in a ratio of 5.3:1 and had a molecular weight of 3.3 x 10(4) Da. Use of IG16 as a starter culture controlled whey separation and improved viscosity, flavor, consistency, and color and appearance of lassi. Use of IG16 resulted in lassi having optimal acidity, less syneresis, high viscosity, and better scores for flavor, consistency, and color and appearance.
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Affiliation(s)
- P V Behare
- Dairy Microbiology Division, National Dairy Research Institute, Karnal 132001, Haryana, India.
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46
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Pringsulaka O, Patarasinpaiboon N, Suwannasai N, Atthakor W, Rangsiruji A. Isolation and characterisation of a novel Podoviridae-phage infecting Weissella cibaria N 22 from Nham, a Thai fermented pork sausage. Food Microbiol 2010; 28:518-25. [PMID: 21356460 DOI: 10.1016/j.fm.2010.10.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Revised: 10/11/2010] [Accepted: 10/19/2010] [Indexed: 11/15/2022]
Abstract
A novel Podoviridae lactic acid bacteria (LAB) phage from Nham, a Thai fermented pork sausage, is reported. From a total of 36 samples, 41 isolates of LAB were obtained and employed as hosts for the isolation of phages. From these LAB, only one phage, designated Φ 22, was isolated. The lactic acid bacterial isolate named N 22, sensitive to phage Φ 22 infection was identified by an API 50 CHL kit and N 22's complete sequence of the 16S rDNA sequence. BLASTN analysis of the 16S rDNA sequence revealed a 99% similarity to the 16S rDNA sequence of Weissella cibaria in the GenBank database. Electron micrographs indicated that the phage head was icosahedral with head size and tail length of 92 × 50 nm and 27 nm, respectively. On the basis of the morphology, this phage belongs to the family Podoviridae. Host-range determination revealed that the phage Φ 22 was not capable of infecting the other 40 isolates of LAB and referenced Weissella strains used. A one-step growth experiment showed that the latent period and burst size were estimated at 110 min and 55 phage particles/infected cell, respectively. Furthermore, the phage was infective over a wide range of pH (pH 5.0-8.0) and the D time of Φ 22 was calculated as 88 s at 70 °C and 15s at 80 °C. Phage titers decreased below the detection limit (20 PFU/ml) after heating for more than 60s at 80 °C, or 20s at 90 °C or less than 10s at 100 °C. The results from the study of Nham revealed that Φ 22 was active against the potential starter culture (W. cibaria N 22) for Nham fermentation. Phage infection could adversely affect the fermentation process of Nham by delaying acidification when using W. cibaria N 22 as a starter. However, the results from a sensory test revealed that the panelists did not detect any defects in the final products. This is the first report on the isolation of W. cibaria phage.
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Affiliation(s)
- Onanong Pringsulaka
- Department of Biology, Faculty of Science, Srinakharinwirot University, Wattana, Bangkok 10110, Thailand.
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Patel S, Kasoju N, Bora U, Goyal A. Structural analysis and biomedical applications of dextran produced by a new isolate Pediococcus pentosaceus screened from biodiversity hot spot Assam. BIORESOURCE TECHNOLOGY 2010; 101:6852-6855. [PMID: 20444595 DOI: 10.1016/j.biortech.2010.03.063] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2009] [Revised: 03/12/2010] [Accepted: 03/15/2010] [Indexed: 05/29/2023]
Abstract
Dextran produced by a natural isolate of Pediococcus pentosaceus, screened from Assam, in the Northeastern region of India, was estimated, purified, structure characterised and functionality analysed. The dextran concentration in the cell free supernatant of the isolate P. pentosaceus was 10.2mg/ml. FT-IR analysis revealed the hydroxyl and carboxyl functional groups present in the dextran. (1)H NMR and (13)C NMR spectral data revealed that the dextran has a linear backbone of alpha-(1-->6) linked D-glucose residues. The decrease in viscosity of dextran solution with the increase in shear rate, threw light on its typical non-Newtonian pseudoplastic behaviour. The cytotoxicity tests on human cervical cancer (HeLa) cell line was studied which showed the dextran is non-toxic and biocompatible, rendering it safe for drug delivery, tissue engineering and various other biomedical applications.
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Affiliation(s)
- Seema Patel
- Department of Biotechnology, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
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48
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Capsular and slime-polysaccharide production by Lactobacillus rhamnosus JAAS8 isolated from Chinese sauerkraut: Potential application in fermented milk products. J Biosci Bioeng 2010; 110:53-7. [DOI: 10.1016/j.jbiosc.2009.12.010] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2009] [Revised: 12/28/2009] [Accepted: 12/28/2009] [Indexed: 11/23/2022]
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49
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Identification of glutaminase-producing lactic acid bacteria isolated from Nham, a traditional Thai fermented food and characterisation of glutaminase activity of isolatedWeissella cibaria. ANN MICROBIOL 2009. [DOI: 10.1007/bf03179213] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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50
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Lactic acid bacteria biodiversity in Italian marinated seafood salad and their interactions on the growth of Listeria monocytogenes. Food Control 2009. [DOI: 10.1016/j.foodcont.2008.07.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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