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Nieto JA, Rosés C, Viadel B, Gallego E, Romo-Hualde A, Milagro FI, Barceló A, Virto R, Saldaña G, Luengo E. Sourdough bread enriched with exopolysaccharides and gazpacho by-products modulates in vitro the microbiota dysbiosis. Int J Biol Macromol 2024; 272:132906. [PMID: 38851991 DOI: 10.1016/j.ijbiomac.2024.132906] [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: 08/03/2023] [Revised: 05/16/2024] [Accepted: 06/02/2024] [Indexed: 06/10/2024]
Abstract
Sourdough bread enriched with soluble fiber (by in-situ exopolysaccharides production) and insoluble fiber (by gazpacho by-products addition) showed prebiotic effects an in vitro dynamic colonic fermentation performance with obese volunteer's microbiota. Bifidobacterium population was maintained whereas Lactobacillus increased throughout the colonic sections. Conversely, Enterobacteriaceae and Clostridium groups clearly decreased. Specific bacteria associated with beneficial effects increased in the ascending colon (Lactobacillus fermentum, Lactobacillus paracasei, Bifidobacterium longum and Bifidobacterium adolescentis) whereas Eubacterium eligens, Alistipes senegalensis, Prevotella copri and Eubacterium desmolans increased in the transversal and descending colon. Additionally, Blautia faecis and Ruminococcus albus increased in the transversal colon, and Bifidobacterium longum, Roseburia faecis and Victivallis vadensis in the descending colon. Bifidobacterium and Lactobacillus fermented the in-situ exopolysaccharides and released pectins from gazpacho by-products, as well as cellulosic degraded bacteria. This increased the short and medium chain fatty acids. Acetic acid, as well as butyric acid, increased throughout the colonic tract, which showed greater increases only in the transversal and descending colonic segments. Conversely, propionic acid was slightly affected by the colonic fermentation. These results show that sourdough bread is a useful food matrix for the enrichment of vegetable by-products (or other fibers) in order to formulate products with microbiota modulatory capacities.
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Affiliation(s)
- Juan Antonio Nieto
- Centro Tecnológico Ainia, Parque Tecnológico de Valencia, E46980 Paterna, Spain; Bioactivity and Nutritional Immunology Group (BIOINUT), Faculty of Health Science, Universidad Internacional de Valencia (VIU), Calle Pintor Sorolla 21, E46002 Valencia, Spain.
| | - Carles Rosés
- Servei de Genòmica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallés, Spain
| | - Blanca Viadel
- Centro Tecnológico Ainia, Parque Tecnológico de Valencia, E46980 Paterna, Spain
| | - Elisa Gallego
- Centro Tecnológico Ainia, Parque Tecnológico de Valencia, E46980 Paterna, Spain
| | - Ana Romo-Hualde
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, 31008 Pamplona, Spain
| | - Fermín I Milagro
- Centre for Nutrition Research, Department of Nutrition, Food Sciences and Physiology, University of Navarra, 31008 Pamplona, Spain; Navarra Institute for Health Research (IdISNA), 31008 Pamplona, Spain; Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición (CIBERobn), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Anna Barceló
- Servei de Genòmica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallés, Spain
| | - Raquel Virto
- Centro Nacional de Tecnología y Seguridad Alimentaria (CNTA), Carretera-Na134-km 53, San Adrian 31570, Navarra, Spain
| | - Guillermo Saldaña
- NOVAPAN S.L., Research & Development Department, 50014 Zaragoza, Spain
| | - Elisa Luengo
- NOVAPAN S.L., Research & Development Department, 50014 Zaragoza, Spain
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Xu H, Li Y, Song J, Zhou L, Wu K, Lu X, Zhai X, Wan Z, Gao J. Highly active probiotic hydrogels matrixed on bacterial EPS accelerate wound healing via maintaining stable skin microbiota and reducing inflammation. Bioact Mater 2024; 35:31-44. [PMID: 38304916 PMCID: PMC10831122 DOI: 10.1016/j.bioactmat.2024.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 12/13/2023] [Accepted: 01/12/2024] [Indexed: 02/03/2024] Open
Abstract
Skin microbiota plays an important role in wound healing, but skin injuries are highly susceptible to wound infections, leading to disruption of the skin microbiota. However, conventional antibacterial hydrogels eliminate both probiotics and pathogenic bacteria, disrupting the balance of the skin microbiota. Therefore, it is important to develop a wound dressing that can fend off foreign pathogenic bacteria while preserving skin microbiota stability. Inspired by live bacteria therapy, we designed a probiotic hydrogel (HAEPS@L.sei gel) with high viability for promoting wound healing. Lactobacillus paracasei TYM202 encapsulated in the hydrogel has the activity of promoting wound healing, and the hydrogel matrix EPS-M76 has the prebiotic activity that promotes the proliferation and metabolism of Lactobacillus paracasei TYM202. During the wound healing process, HAEPS@L.sei gel releases lactic acid and acetic acid to resist the growth of pathogenic bacteria while maintaining Firmicutes and Proteobacteria balance at the phylum level, thus preserving skin microbiota stability. Our results showed that live probiotic hydrogels reduce the incidence of inflammation during wound healing while promoting angiogenesis and increasing collagen deposition. This study provides new ideas for developing wound dressings predicated on live bacterial hydrogels.
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Affiliation(s)
- Hongtao Xu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Yaqian Li
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Jiangping Song
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Liuyang Zhou
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Kaizhang Wu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Xingyu Lu
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - XiaoNing Zhai
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
| | - Zhili Wan
- Laboratory of Food Proteins and Colloids, School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Jie Gao
- School of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, China
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López-García E, Marín-Gordillo A, Sánchez-Hidalgo M, Ávila-Román J, Romero-Gil V, Bermúdez-Oria A, Benítez-Cabello A, Garrido-Fernández A, Rodríguez-Gómez F, Arroyo-López FN. Functional features of the exopolysaccharide extracts produced by Lactiplantibacillus strains isolated from table olives. Food Funct 2024; 15:1938-1947. [PMID: 38269604 DOI: 10.1039/d3fo04223e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
This study evaluates the functional characteristics of the exopolysaccharide (EPS) extracts produced by various strains of Lactiplantibacillus pentosus (LPG1, 119, 13B4, and Lp13) and Lactiplantibacillus plantarum (Lp15) isolated from table olives. None of the EPS crude extracts showed cytotoxicity when administered to THP-1 human macrophage cells at dosages ranging from 6.25 to 50 μg mL-1. Many exhibited anti-inflammatory properties (reduction of pro-inflammatory cytokines TNF-α and IL-6 production) and antioxidant activity (reduction of ROS%) when macrophages were stimulated with Escherichia coli lipopolysaccharide. Notably, the EPS extract produced by the L. pentosus LPG1 strain had the best results corroborated by western blot immune analysis for differential expression of COX-2, Nrf-2, and HO-1 proteins, with the most significant antioxidant and anti-inflammatory response observed at a dosage of 50 μg mL-1. Chemical analysis revealed that the EPS extract produced by this strain contains a heteropolymer composed of mannose (35.45%), glucose (32.99%), arabinose (17.93%), xylose (7.48%), galactose (4.03%), rhamnose (1.34%), and fucose (0.77%). Finally, we conducted response surface methodology to model the EPS extract production by L. pentosus LPG1 considering pH (3.48-8.52), temperature (16.59-33.41 °C) and salt concentration (0.03-8.77% NaCl) as independent variables. The model identified linear effects of salt and pH and quadratic effects of salt as significant terms. The maximum EPS extract production (566 mg L-1) in a synthetic culture medium (MRS) was achieved at pH 7.5, salt 7.0%, and a temperature of 20 °C. These findings suggest the potential for novel applications for the EPS produced by L. pentosus LPG1 as nutraceutical candidates for use in human diets.
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Affiliation(s)
- Elio López-García
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Ana Marín-Gordillo
- Technological Applications for Improvement of the Quality and Safety in Foods. R&D Division, Avda. Diego Martín Barrio 10. Second Floor, 41013, Seville, Spain
| | - Marina Sánchez-Hidalgo
- Department of Pharmacology, Faculty of Pharmacy. University of Seville, 41012, Seville, Spain
| | - Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy. University of Seville, 41012, Seville, Spain
| | - Verónica Romero-Gil
- Department of Food Science and Technology. University of Cordoba, Carretera Madrid-Cádiz Km 396A. Darwin Building, 14071, Cordoba, Spain
| | - Alejandra Bermúdez-Oria
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Antonio Benítez-Cabello
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Antonio Garrido-Fernández
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Francisco Rodríguez-Gómez
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
| | - Francisco Noé Arroyo-López
- Instituto de la Grasa (CSIC), Carretera de Utrera Km 1. Campus Universitario Pablo de Olavide. Building 46, 41013, Seville, Spain.
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Wiull K, Hagen LH, Rončević J, Westereng B, Boysen P, Eijsink VGH, Mathiesen G. Antigen surface display in two novel whole genome sequenced food grade strains, Lactiplantibacillus pentosus KW1 and KW2. Microb Cell Fact 2024; 23:19. [PMID: 38212746 PMCID: PMC10782763 DOI: 10.1186/s12934-024-02296-2] [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: 12/14/2023] [Accepted: 01/04/2024] [Indexed: 01/13/2024] Open
Abstract
BACKGROUND Utilization of commensal bacteria for delivery of medicinal proteins, such as vaccine antigens, is an emerging strategy. Here, we describe two novel food-grade strains of lactic acid bacteria, Lactiplantibacillus pentosus KW1 and KW2, as well as newly developed tools for using this relatively unexplored but promising bacterial species for production and surface-display of heterologous proteins. RESULTS Whole genome sequencing was performed to investigate genomic features of both strains and to identify native proteins enabling surface display of heterologous proteins. Basic characterization of the strains revealed the optimum growth temperatures for both strains to be 35-37 °C, with peak heterologous protein production at 33 °C (KW1) and 37 °C (KW2). Negative staining revealed that only KW1 produces closely bound exopolysaccharides. Production of heterologous proteins with the inducible pSIP-expression system enabled high expression in both strains. Exposure to KW1 and KW2 skewed macrophages toward the antigen presenting state, indicating potential adjuvant properties. To develop these strains as delivery vehicles, expression of the mycobacterial H56 antigen was fused to four different strain-specific surface-anchoring sequences. CONCLUSION All experiments that enabled comparison of heterologous protein production revealed KW1 to be the better recombinant protein production host. Use of the pSIP expression system enabled successful construction of L. pentosus strains for production and surface display of an antigen, underpinning the potential of these strains as novel delivery vehicles.
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Affiliation(s)
- Kamilla Wiull
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway.
| | - Live Heldal Hagen
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway
| | - Jelena Rončević
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway
| | - Bjørge Westereng
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway
| | - Preben Boysen
- Faculty of Veterinary Medicine, NMBU - Norwegian University of Life Sciences, Ås, Norway
| | - Vincent G H Eijsink
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway
| | - Geir Mathiesen
- Faculty of Chemistry, Biotechnology and Food Science, NMBU - Norwegian University of Life Sciences, Ås, Norway.
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Itani K, Marcussen C, Rocha SDC, Kathiresan P, Mydland LT, Press CM, Xie Z, Tauson AH, Øverland M. Effect of Cyberlindnera jadinii yeast on growth performance, nutrient digestibility, and gut health of broiler chickens from 1 to 34 d of age. Poult Sci 2023; 102:103127. [PMID: 37837676 PMCID: PMC10585334 DOI: 10.1016/j.psj.2023.103127] [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: 05/15/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/16/2023] Open
Abstract
The effect of dietary graded levels of Cyberlindnera jadinii yeast (C. jadinii) on growth performance, nutrient digestibility, and gut health of broilers was evaluated from 1 to 34 d of age. A total of 360 male broiler chicks were randomly allocated to 1 of 4 dietary treatments (6 replicate pens each) consisting of a wheat-soybean meal-based pelleted diet (Control or CJ0), and 3 diets in which 10% (CJ10), 20% (CJ20), and 30% (CJ30) of the crude protein were supplied by C. jadinii, by gradually replacing protein-rich ingredients. Body weight and feed intake were measured at d 1, 11, 22, and 32. Pellet temperature, durability, and hardness increased linearly (P < 0.05) with C. jadinii inclusion, with highest (P < 0.05) values for CJ30. Up until d 22, feed conversion ratio (FCR) was similar between treatments (P = 0.169). Overall, increasing C. jadinii inclusion linearly increased (P = 0.047) feed intake but had no effect on weight gain or mortality. FCR increased (P < 0.05) linearly with increasing C. jadinii inclusion but only birds fed CJ30 had a significantly poorer FCR compared to the Control. Ileal digestibility was not affected by C. jadinii inclusion, however, there was a significant linear decrease in crude protein and phosphorus, and a tendency for a decrease in fat digestibility. Apparent metabolizable energy (AME) decreased (P < 0.001) quadratically with increasing C. jadinii and was significantly lower in CJ30 compared to the Control. Ileal concentrations of volatile fatty acids (VFAs) were not affected by C. jadinii inclusion, but butyric acid and total VFAs were linearly and quadratically increased and were significantly higher in cecal digesta of birds fed CJ20 and CJ30. Increasing C. jadinii inclusion was associated with an increase (P < 0.05) in the relative abundance of lactobacillus in the ileum and cecum. In conclusion, C. jadinii yeast can supply up to 20% of the total dietary protein without negatively affecting performance, digestibility, or gut health of broilers. The potential confounding role of feed processing and C. jadinii cell wall components on broiler performance is discussed.
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Affiliation(s)
- Khaled Itani
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Caroline Marcussen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Gronnegärdsvej 3, 1870 Frederiksberg C, Denmark; Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlagevej 16, 1870 Frederiksberg C, Denmark
| | - Sérgio D C Rocha
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Purushothaman Kathiresan
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Liv Torunn Mydland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Charles McLean Press
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Zhuqing Xie
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26,1958 Frederiksberg C, Denmark
| | - Anne-Helene Tauson
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway; Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Gronnegärdsvej 3, 1870 Frederiksberg C, Denmark
| | - Margareth Øverland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway.
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Ding X, Qian F, Mu G, Tuo Y. Optimization of medium composition of Lactobacillus plantarum Y44 using Plackett -Burman and Box-Behnken designs. Prep Biochem Biotechnol 2023; 53:1058-1066. [PMID: 36719814 DOI: 10.1080/10826068.2023.2166957] [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] [Indexed: 02/01/2023]
Abstract
The biomass of Lactobacillus strains depends on the culture media and culture conditions. The purpose of this study was to optimize the culture medium composition and culture conditions of Lactobacillus plantarum Y44 to improve its biomass. The utilization of different carbon sources and nitrogen sources by L. plantarum Y44 was assessed by single factor experiment to screen out the economical carbon and nitrogen sources for L. plantarum Y44 growth. Through optimization experiments, the optimized culture medium for L. plantarum Y44 growth consists of soybean peptone 44.1 g/L, yeast extract 22.1 g/L, sucrose 35.6 g/L, hydrogen diamine citrate 2 g/L, anhydrous sodium acetate 8.5 g/L, dipotassium hydrogen phosphate 4 g/L, Tween-80 2 mL/L, manganese sulfate 0.25 g/L, and magnesium sulfate 0.58 g/L, and the initial pH 6.7. The concentration of viable bacteria cells of L. plantarum Y44 culturing in the optimized medium at 37 °C for 16 h was up to 3.363 × 1010 CFU/mL, as 6.11 times higher than that in the MRS medium.
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Affiliation(s)
- Xiang Ding
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Fang Qian
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
| | - Guangqing Mu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian, P. R. China
| | - Yanfeng Tuo
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, P. R. China
- Dalian Probiotics Function Research Key Laboratory, Dalian Polytechnic University, Dalian, P. R. China
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Yang Y, Wang M, Zhang H, Zhou W, Liu W, Pi X, Xing J. An exopolysaccharide from Lactobacillus pentosus YY-112: structure and effect on the human intestinal microbiota. Food Funct 2023; 14:7718-7726. [PMID: 37548014 DOI: 10.1039/d3fo01739g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
The development of novel prebiotics, which could regulate the intestinal microbiota, may help prevent and treat intestinal diseases. Here, we studied a homogeneous polysaccharide, LPE-2, produced by Lactobacillus pentosus YY-112 during fermentation. Methylation and gas chromatography-mass spectrometry analysis, combined with nuclear magnetic resonance results, suggested that the structural unit of LPE-2 comprises a branched mannan moiety and a linear glucan moiety. In vitro simulated intestinal fermentation showed that LPE-2 reduced harmful intestinal gas production and promoted short-chain fatty acid production (especially propionic acid). Moreover, it reduced the relative abundance of Escherichia-Shigella, increased that of Bifidobacterium and Lactobacillus, and had a stronger regulatory effect on intestinal flora in women than in men. The potential sex-specific prebiotic effects of LPE-2 on human intestinal health, were possibly related to its mannan branch with (1→2) and (1→3) linkages and backbones with flexible α configurations, which are sheared and degraded/utilized easier by Bifidobacterium and Lactobacillus.
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Affiliation(s)
- Ying Yang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Mingzhe Wang
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Hui Zhang
- University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Wanyi Zhou
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Wei Liu
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Xionge Pi
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Jianrong Xing
- Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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Kowsalya M, Velmurugan T, Mythili R, Kim W, Sudha KG, Ali S, Kalpana B, Ramalingam S, Rajeshkumar MP. Extraction and characterization of exopolysaccharides from Lactiplantibacillus plantarum strain PRK7 and PRK 11, and evaluation of their antioxidant, emulsion, and antibiofilm activities. Int J Biol Macromol 2023; 242:124842. [PMID: 37182634 DOI: 10.1016/j.ijbiomac.2023.124842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/31/2023] [Accepted: 05/09/2023] [Indexed: 05/16/2023]
Abstract
Exopolysaccharides (EPS) are produced by probiotic bacteria Lactiplantibacillus plantarum PRK7 and L. plantarum PRK11. The structure of EPS-7 and EPS-11 was characterized by Fourier-transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR), scanning electron microscopy (SEM), gas chromatography-mass spectroscopy (GCMS), and thermogravimetric analysis (TGA). Further, in in vitro studies antioxidant, emulsion, and antibiofilm activity were investigated. The FTIR spectrum confirmed the presence of polysaccharides in EPS-7 and EPS-11, with absorbance at 1654.93 and 1655.33 cm-1, respectively. H1 NMR further confirmed the presence of glucose, galactose, xylose, and mannose. Sugar derivatives in EPS-7 and EPS-11 were further confirmed with GCMS. The SEM analysis revealed that EPS-7 had a weblike structure and EPS-11 had a smooth porous layer. The result of the TGA revealed that EPS-7 and EPS-11 had greater thermal stability at 319.1 and 300.1 °C, respectively. Furthermore, EPS-7 and EPS-11 showed a good percentage of free radical scavenging in DPPH (89.77 % and 93.1 %), ABTS (57.65 % and 58.63 %), hydroxyl radical scavenging (44.46 % and 40.308 %), and reducing power assay. The emulsion activity was confirmed with edible oils such as coconut oil, sesame oil, almond oil, castor oil, and neem oil. The highest emulsion activity for EPS-7 and EPS-11 was found be with coconut and castor oil. In addition, the antibiofilm activity against pathogens revealed that EPS possess can prevent biofilm formation. Thus, it was found that EPS-7 and EPS-11 possess good structural characteristics and their biological activity makes them ideal for applications in the food and pharmaceutical industry.
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Affiliation(s)
- Mariyappan Kowsalya
- Department of Biotechnology, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode 637 215, Tamil Nadu, India
| | - Thangavel Velmurugan
- Department of Biotechnology, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode 637 215, Tamil Nadu, India
| | - R Mythili
- Centre for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600077, Tamil Nadu, India
| | - Woong Kim
- Department of Environmental Engineering, Kyungpook National University, Daegu, South Korea
| | - Kattakgounder Govindaraj Sudha
- Department of Biotechnology, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode 637 215, Tamil Nadu, India
| | - Saheb Ali
- Department of Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai 600077, Tamil Nadu, India
| | - Balakrishnan Kalpana
- Department of Nanotechnology, K.S.R. College of Technology, Tiruchengode 637 215, Tamil Nadu, India
| | - Srinivasan Ramalingam
- Department of Horticulture and Life Science, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, Republic of Korea.
| | - Mohan Prasanna Rajeshkumar
- Department of Biotechnology, K.S. Rangasamy College of Arts and Science (Autonomous), Tiruchengode 637 215, Tamil Nadu, India.
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Giordani B, Naldi M, Croatti V, Parolin C, Erdoğan Ü, Bartolini M, Vitali B. Exopolysaccharides from vaginal lactobacilli modulate microbial biofilms. Microb Cell Fact 2023; 22:45. [PMID: 36890519 PMCID: PMC9993704 DOI: 10.1186/s12934-023-02053-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 03/02/2023] [Indexed: 03/10/2023] Open
Abstract
BACKGROUND Exopolysaccharides (EPS) secreted by beneficial lactobacilli exert a plethora of positive activities, but little is known about their effects on biofilms of opportunistic vaginal pathogens and especially on biofilms of lactobacilli themselves. Here, the EPS produced by six vaginal lactobacilli, belonging to Lactobacillus crispatus (BC1, BC4, BC5) and Lactobacillus gasseri (BC9, BC12, BC14) species were isolated from cultural supernatants and lyophilized. RESULTS Lactobacillus EPS were chemically characterized in terms of monosaccharide composition by liquid chromatography (LC) analysis coupled to UV and mass spectrometry (MS) detection. Moreover, the ability of EPS (0.1, 0.5, 1 mg/mL) to stimulate the biofilm formation of lactobacilli and to inhibit the formation of pathogens' biofilms was evaluated by crystal violet (CV) staining and 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay. Isolated EPS (yields 133-426 mg/L) were heteropolysaccharides mainly composed of D-mannose (40-52%) and D-glucose (11-30%). For the first time we demonstrated that Lactobacillus EPS were able to stimulate in a dose-dependent manner (p < 0.05) the formation of biofilms of ten strains belonging to L. crispatus, L. gasseri and Limosilactobacillus vaginalis species, in terms of cell viability (84-282% increase at 1 mg/mL) and especially biofilm biomass (40-195% increase at 1 mg/mL), quantified with MTT assay and CV staining, respectively. EPS released from L. crispatus and L. gasseri were found to better stimulate the biofilms of the same producer species rather than that of other species, including producing strains themselves and other strains. Conversely, the biofilm formation of bacterial (Escherichia coli, Staphylococcus spp., Enterococcus spp. and Streptococcus agalactiae) and fungal (Candida spp.) pathogens was inhibited. The anti-biofilm activity was dose-dependent and was more marked for L. gasseri-derived EPS (inhibition up to 86%, 70%, and 58% at 1 mg/mL, 0.5 mg/mL, and 0.1 mg/mL, respectively), whilst L. crispatus-derived EPS resulted overall less efficient (inhibition up to 58% at 1 mg/mL and 40% at 0.5 mg/mL) (p < 0.05). CONCLUSIONS Lactobacilli-derived EPS favour the biofilm formation of lactobacilli preventing, at the same time, that of opportunistic pathogens. These results support the possible employment of EPS as postbiotics in medicine as a therapeutic/preventive strategy to counteract vaginal infections.
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Affiliation(s)
- Barbara Giordani
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Marina Naldi
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Vanessa Croatti
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Carola Parolin
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | | | - Manuela Bartolini
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Beatrice Vitali
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy.
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Kavitake D, Devi PB, Delattre C, Reddy GB, Shetty PH. Exopolysaccharides produced by Enterococcus genus - An overview. Int J Biol Macromol 2023; 226:111-120. [PMID: 36493920 DOI: 10.1016/j.ijbiomac.2022.12.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
Exopolysaccharide (EPS) biomolecules produced by lactic acid bacteria (LAB) are of prodigious interest due to their unique structural, physico-chemical, and functional characteristics. Several genera of LAB including Enterococcus spp. have been studied for EPS production by various research groups worldwide. EPS produced by various strains from Enterococcus spp. have shown a wide range of functional and technological properties with potential commercial applications. Numerous techniques are used in the characterization of Enterococcus EPS to reveal their structure, linkage, monosaccharide units, functional groups, morphology, and thermal properties. Bioactive potentials of Enterococcus EPS include antioxidant, antibacterial, antibiofilm, anticancer, immunological, prebiotic, and antidiabetic potentials which have been widely reported. These functional and biological properties make Enterococcus EPS a candidate of great importance for multiple applications in the area of food, pharmaceuticals, biomedical and environmental. This review is focused on EPS produced by various strains of the Enterococcus genus isolated from different sources. Several procedures and parameters involved in the production and purification of Enterococcus EPS are also deliberated along with the functional aspects and potential applications.
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Affiliation(s)
- Digambar Kavitake
- Department of Biochemistry, ICMR - National Institute of Nutrition, Hyderabad, 500007, India
| | - Palanisamy Bruntha Devi
- Department of Food Science and Technology, Pondicherry University, Pondicherry 605014, India
| | - Cedric Delattre
- Clermont Auvergne INP, Institut Pascal, CNRS, Université Clermont Auvergne, 63000 Clermont-Ferrand, France; Institut Universitaire de France (IUF), 1 rue Descartes, 75005 Paris, France
| | - G Bhanuprakash Reddy
- Department of Biochemistry, ICMR - National Institute of Nutrition, Hyderabad, 500007, India.
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Zhou W, Tao W, Wang M, Liu W, Xing J, Yang Y. Dendrobium officinale Xianhu 2 polysaccharide helps forming a healthy gut microbiota and improving host immune system: An in vitro and in vivo study. Food Chem 2022; 401:134211. [PMID: 36122490 DOI: 10.1016/j.foodchem.2022.134211] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/02/2022] [Accepted: 09/09/2022] [Indexed: 01/08/2023]
Abstract
Dendrobium officinale is widely consumed owing to its numerous beneficial effects. We aimed to characterize polysaccharides of Dendrobium officinale (DOP) from the stems of Dendrobium officinale Xianhu 2 and clarify whether it benefit the intestinal microbiota and the immune system. The DOP weighed 291 kDa and comprised mannose, glucose, galactose, and rhamnose at 59.31:33.31:1.00:0.51 M ratio. In in vitro/vivo studies, DOP significantly increased benign intestinal microbe proportion (Lactobacillus, etc.), but reduced harmful bacteria (Escherichia_Shigella) (P < 0.05), and significantly increased butyric acid production (P < 0.05). Concentrations of 2 g/L DOP for in vitro fermentation and 100 mg/kg body weight for the mouse model were effective. In mice, DOP significantly reduced CRP, CD3, CD4, and TNF-α levels and increased C4 levels (P < 0.05). DOP might influence the immune system indirectly through regulation of the gut microbiota. Its possible regulation mechanism was that DOP reduced CD4+ Th cells proliferation so that reduced the secretion of TNF-α.
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Affiliation(s)
- Wanyi Zhou
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wenyang Tao
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Mingzhe Wang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wei Liu
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jianrong Xing
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ying Yang
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
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