1
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Exopolysaccharides from Lactococcus lactis affect manufacture, texture and sensory properties of concentrated acid milk gel suspensions (fresh cheese). Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2020.104854] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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2
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Characterization, the Antioxidant and Antimicrobial Activity of Exopolysaccharide Isolated from Poultry Origin Lactobacilli. Probiotics Antimicrob Proteins 2020; 11:1132-1142. [PMID: 30511185 DOI: 10.1007/s12602-018-9494-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The natural antioxidant agent is urgently needed to prevent the negative effects of newly generated free radicals and chronic disorders. Recently, the microbial exopolysaccharide (EPS) is currently used as a potential biopolymer due to its unique biological characteristics. In this study, the biological potential was carried out on the EPSs produced by Lactobacillus reuteri SHA101 (EPS-lr) and Lactobacillus vaginalis SHA110 (EPS-lvg) isolated from gut cecum samples of healthy poultry birds (hen). As results, the EPS-lr and EPS-lvg showed the emulsifying activity of 37.8 ± 1.6% and 27.8 ± 0.5% after the 360 h, respectively. The scanning electron microscopy analysis of EPS-lr and EPS-lvg demonstrated a smooth surface with a compact structure. The both EPSs exhibited strong antibacterial activity against E. coli and Salmonella typhimurium in vitro. In additions, at 4 mg/mL concentration, the EPS-lr and EPS-lvg samples showed potent antioxidant activity regarding hydroxyl radical DPPH (2,2-diphenyl-1-picrylhydrazyl) radical, superoxide anion radical and reducing power at OD700 nm. Furthermore, the EPS-lr and EPS-lvg (600 μg/mL) possessed antitumor activity against colon cancer (Caco-2) cell after 72 h. The results suggested that these EPSs would have great potential in the application of antitumor and antioxidant foods, biomedicine, and pharmaceutics.
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3
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Feng S, Luan D, Ning K, Shao P, Sun P. Ultrafiltration isolation, hypoglycemic activity analysis and structural characterization of polysaccharides from Brasenia schreberi. Int J Biol Macromol 2019; 135:141-151. [DOI: 10.1016/j.ijbiomac.2019.05.129] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 12/15/2022]
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4
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Surber G, Mende S, Jaros D, Rohm H. Clustering of Streptococcus thermophilus Strains to Establish a Relation between Exopolysaccharide Characteristics and Gel Properties of Acidified Milk. Foods 2019; 8:E146. [PMID: 31052192 PMCID: PMC6560422 DOI: 10.3390/foods8050146] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/24/2019] [Accepted: 04/28/2019] [Indexed: 11/16/2022] Open
Abstract
In situ produced extracellular polysaccharides (EPS) from lactic acid bacteria are generally known to affect the texture of fermented dairy products; however, the interplay between EPS and product properties is still poorly understood. The aim of this study was to establish a relationship between concentration and properties of EPS, and gel formation of milk analysed by noninvasive Multispeckle Diffusing Wave Spectroscopy. Twenty Streptococcus thermophilus strains were classified with respect to EPS concentration (8-126 mg GE/kg) and ropiness (thread length: 15-80 mm). Five groups identified by cluster analysis demonstrate the high strain-to-strain variability even within one species of lactic acid bacteria. Results from acidification and gelation experiments averaged per cluster indicate that fermentation time and gel stiffness is higher for strains that produce ropy EPS. A further increase in gel stiffness was detected for strains that also produced cell-bound EPS, which underlines the importance of both ropy and cell-bound EPS for improving acid gel properties. The results may be helpful for a proper selection of EPS-producing starter cultures.
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Affiliation(s)
- Georg Surber
- Institute of Natural Materials Technology, Technische Universität Dresden, 01062 Dresden, Germany.
| | - Susann Mende
- Institute of Natural Materials Technology, Technische Universität Dresden, 01062 Dresden, Germany.
| | - Doris Jaros
- Institute of Natural Materials Technology, Technische Universität Dresden, 01062 Dresden, Germany.
| | - Harald Rohm
- Institute of Natural Materials Technology, Technische Universität Dresden, 01062 Dresden, Germany.
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5
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Peng B, Luo Y, Hu X, Song L, Yang J, Zhu J, Wen Y, Yu R. Isolation, structural characterization, and immunostimulatory activity of a new water-soluble polysaccharide and its sulfated derivative from Citrus medica L. var. sarcodactylis. Int J Biol Macromol 2019; 123:500-511. [DOI: 10.1016/j.ijbiomac.2018.11.113] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/03/2018] [Accepted: 11/12/2018] [Indexed: 12/19/2022]
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6
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Jiao Y, Hua D, Huang D, Zhang Q, Yan C. Characterization of a new heteropolysaccharide from green guava and its application as an α-glucosidase inhibitor for the treatment of type II diabetes. Food Funct 2018; 9:3997-4007. [PMID: 29975387 DOI: 10.1039/c8fo00790j] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Psidium guajava fruit is a subtropical fruit, functional food and traditional medicine for the adjuvant treatment of diabetes mellitus in China. To investigate the active components responsible for its health benefits, a novel heteropolysaccharide GP70-3 was purified by water extraction, ethanol precipitation and column chromatography. Structural characterization of GP70-3 was elucidated for the first time by monosaccharide composition assay, Fourier transform-infrared spectroscopy (FT-IR), methylation analysis, gas chromatography coupled with mass spectrometry (GC-MS) and nuclear magnetic resonance spectroscopy (NMR). The data revealed that GP70-3 contained a backbone of 1→3,6)-linked β-d-Galp, 1→5)-linked α-l-Araf, 1→6)-linked β-d-Galp and 1→3)-linked β-d-Galp, branched with 1→2,3,5)-linked α-l-Araf, 1→3)-linked α-l-Araf, 1→3)-linked α-l-Rhap, 1→3)-linked β-d-GlcpA, 1→3)-linked β-d-GalpA and terminated with →1)-linked β-d-Galp. Advanced structure studies showed GP70-3 consisted of irregular flakes with rounded-spherical pores. Moreover, GP70-3 exhibited outstanding α-glucosidase inhibitory activity in vitro, with an IC50 value of 2.539 ± 0.144 μM, which was 1867 times higher than that of the positive control acarbose (IC50 value of 4.744 ± 0.026 mM). Therefore, consumption of guava polysaccharides may be beneficial as an α-glucosidase inhibitor for reducing the postprandial blood glucose level and treating type II diabetes.
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Affiliation(s)
- Yukun Jiao
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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7
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Relationship between shear energy input and sedimentation properties of exopolysaccharide-producing Streptococcus thermophilus strains. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Häffele F, Jaros D, Mende S, Rohm H, Nirschl H. Separation von Starterkulturen nach Hochdruck-Homogenisierung. CHEM-ING-TECH 2018. [DOI: 10.1002/cite.201700166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Florian Häffele
- Karlsruher Institut für Technologie; Institut für mechanische Verfahrenstechnik und Mechanik; Straße am Forum 8 76131 Karlsruhe Deutschland
| | - Doris Jaros
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Susann Mende
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Harald Rohm
- Technische Universität Dresden; Professur für Lebensmitteltechnik; Bergstraße 120 01069 Dresden Deutschland
| | - Hermann Nirschl
- Karlsruher Institut für Technologie; Institut für mechanische Verfahrenstechnik und Mechanik; Straße am Forum 8 76131 Karlsruhe Deutschland
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9
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Lynch KM, Zannini E, Coffey A, Arendt EK. Lactic Acid Bacteria Exopolysaccharides in Foods and Beverages: Isolation, Properties, Characterization, and Health Benefits. Annu Rev Food Sci Technol 2018; 9:155-176. [DOI: 10.1146/annurev-food-030117-012537] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kieran M. Lynch
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Emanuele Zannini
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Aidan Coffey
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, Cork, Ireland
| | - Elke K. Arendt
- School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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10
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Vazquez-Rodriguez A, Vasto-Anzaldo XG, Barboza Perez D, Vázquez-Garza E, Chapoy-Villanueva H, García-Rivas G, Garza-Cervantes JA, Gómez-Lugo JJ, Gomez-Loredo AE, Garza Gonzalez MT, Zarate X, Morones-Ramirez JR. Microbial Competition of Rhodotorula mucilaginosa UANL-001L and E. coli increase biosynthesis of Non-Toxic Exopolysaccharide with Applications as a Wide-Spectrum Antimicrobial. Sci Rep 2018; 8:798. [PMID: 29335484 PMCID: PMC5768876 DOI: 10.1038/s41598-017-17908-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 12/04/2017] [Indexed: 01/09/2023] Open
Abstract
Bacterial species are able to colonize and establish communities in biotic and abiotic surfaces. Moreover, within the past five decades, incidence of bacterial strains resistant to currently used antibiotics has increased dramatically. This has led to diverse health issues and economical losses for different industries. Therefore, there is a latent need to develop new and more efficient antimicrobials. This work reports an increased production of an exopolysaccharide in a native yeast strain isolated from the Mexican Northeast, Rhodotorula mucilaginosa UANL-001L, when co-cultured with E. coli. The exopolysaccharide produced is chemically and physically characterized and its applications as an antimicrobial and antibiofilm are explored. The exopolysaccharide is capable of inhibiting planktonic growth and biofilm formation in Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. Additionally, the exopolysaccharide studied here does not exhibit cytotoxic effects when assessed both, in vitro against an H9c2 mammalian cell line, and in vivo in a murine toxicity model. Taken together, the properties of this exopolysaccharide indicate that it has potential applications to inhibit bacterial colonization in medical and industrial settlings.
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Affiliation(s)
- Augusto Vazquez-Rodriguez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Ximena G Vasto-Anzaldo
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico
| | - Daniel Barboza Perez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Eduardo Vázquez-Garza
- Cátedra de Cardiología y Medicina Vascular. Escuela de Medicina. Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico.,Centro de Investigación Biomédica. Hospital Zambrano-Hellion. Tecnologico de Monterrey, San Pedro Garza-Garcia, Nuevo León, Mexico
| | - Héctor Chapoy-Villanueva
- Cátedra de Cardiología y Medicina Vascular. Escuela de Medicina. Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico.,Centro de Investigación Biomédica. Hospital Zambrano-Hellion. Tecnologico de Monterrey, San Pedro Garza-Garcia, Nuevo León, Mexico
| | - Gerardo García-Rivas
- Cátedra de Cardiología y Medicina Vascular. Escuela de Medicina. Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico.,Centro de Investigación Biomédica. Hospital Zambrano-Hellion. Tecnologico de Monterrey, San Pedro Garza-Garcia, Nuevo León, Mexico
| | - Javier A Garza-Cervantes
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico
| | - Jéssica J Gómez-Lugo
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Alma Elizabeth Gomez-Loredo
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Maria Teresa Garza Gonzalez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Xristo Zarate
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico.,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico
| | - Jose Ruben Morones-Ramirez
- Universidad Autónoma de Nuevo León, Facultad de Ciencias Químicas, Pedro de Alba, S/N, San Nicolas de los Garza, Nuevo León, Mexico. .,Centro de Investigacion en Biotecnologia y Nanotoxicologia, Facultad de Ciencias Quimicas, Universidad Autonoma de Nuevo Leon. Parque de Investigacion e Innovacion Tecnologica, Km. 10 autopista al Aeropuerto Internacional Mariano Escobedo, Apodaca, Nuevo Leon, 66629, Mexico.
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11
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Tansel B. Morphology, composition and aggregation mechanisms of soft bioflocs in marine snow and activated sludge: A comparative review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 205:231-243. [PMID: 28987986 DOI: 10.1016/j.jenvman.2017.09.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/26/2017] [Accepted: 09/30/2017] [Indexed: 06/07/2023]
Abstract
Conditions that lead to marine snow formation and aggregates that constitute the marine snow have similarities with the soft bioflocs that form during wastewater treatment by activated sludge process. Analysis of the conditions and similarities of the soft bioflocs in these two aquatic environments provide insight for the processes that lead to formation and growth of hydrated aggregates consisting of both living and nonliving particles, their chemical and biolocial composition, settling/suspension behavior, and contributing factors for their structure and morphology. This literature review provides a comparative analysis of the soft aggregates that form in marine and wastewater environments to characterize the conditions for formation and growth of highly hydrated aggregates consisting of microorganisms, suspended solids and large molecules. The marine snow and bioflocs that form in wastewater are visually similar and even contain microorganisms that are of similar type (i.e., Zoogloea, filamentous bacteria). During wastewater treatment, the microorganisms are not stressed and exopolymeric substances (EPS) produced have shorter molecules and higher protein content while EPS produced by the marine organisms are significantly larger in molecular size (by orders of magnitude) and have higher carbohydrate content.
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Affiliation(s)
- Berrin Tansel
- Florida International University, Civil and Environmental Engineering Department, Miami, FL, USA.
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12
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Jaros D, Mende S, Häffele F, Nachtigall C, Nirschl H, Rohm H. Shear treatment of starter culture medium improves separation behavior of Streptococcus thermophilus cells. Eng Life Sci 2017; 18:62-69. [PMID: 32624862 DOI: 10.1002/elsc.201700121] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/31/2017] [Accepted: 09/25/2017] [Indexed: 11/06/2022] Open
Abstract
A central step in the production of starter cultures is the separation of the cells from the fermentation medium, which is usually achieved by disk centrifuges. In case of microorganisms which produce exopolysaccharides (e.g., various strains of lactic acid bacteria), the properties of the respective exopolysaccharides may interfere with this separation step. By using six strains of Streptococcus thermophilus the hypothesis was tested that a shear treatment of the fermented culture medium improves subsequent cell separation markedly. Depending on the type of exopolysaccharides (freely present in the medium, or as capsules around the cells) an energy input of up to 2.5 kJ/mL generated with an Ultra-Turrax affected cell chain length of the strains and viscosity of fermentation medium differently. For bacteria producing capsular exopolysaccharides, space- and time-resolved centrifugation experiments revealed an increase of sedimentation velocity after shear treatment. In general, viability of the microorganisms, detected by flow cytometry measurements and fermentation experiments, was not affected by the shearing procedure. The results therefore indicate that strain-targeted shearing is helpful to improve the separability of cells from the fermented media.
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Affiliation(s)
- Doris Jaros
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Susann Mende
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Florian Häffele
- Institute of Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Karlsruhe Germany
| | - Carsten Nachtigall
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
| | - Hermann Nirschl
- Institute of Mechanical Process Engineering and Mechanics Karlsruhe Institute of Technology Karlsruhe Germany
| | - Harald Rohm
- Chair of Food Engineering Technische Universität Dresden Dresden Germany
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13
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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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14
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Tu W, Zhu J, Bi S, Chen D, Song L, Wang L, Zi J, Yu R. Isolation, characterization and bioactivities of a new polysaccharide from Annona squamosa and its sulfated derivative. Carbohydr Polym 2016; 152:287-296. [DOI: 10.1016/j.carbpol.2016.07.012] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 06/24/2016] [Accepted: 07/04/2016] [Indexed: 01/07/2023]
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15
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Kavitake D, Devi PB, Singh SP, Shetty PH. Characterization of a novel galactan produced by Weissella confusa KR780676 from an acidic fermented food. Int J Biol Macromol 2016; 86:681-9. [PMID: 26836614 DOI: 10.1016/j.ijbiomac.2016.01.099] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 01/08/2016] [Accepted: 01/27/2016] [Indexed: 01/21/2023]
Abstract
An exopolysaccharide (EPS) producing strain PUFSTM055 isolated from Idli batter (an Indian traditional cereal-legume based fermented food) was identified as Weissella confusa KR780676. The strain was shown to produce 17.2g/L (dry weight) of EPS in 2% sucrose supplemented MRS broth and the EPS was characterized. HPTLC analysis confirmed the presence of galactose monomers, indicating the homopolysaccharide nature of EPS. Fourier-transform infrared spectroscopy and nuclear magnetic resonance analysis revealed that the EPS was found to be a novel linear galactan containing α-(1→6)-linked galactose units. Scanning electron microscopy of the EPS revealed the presence of porous and spongy starch-like granules. Topographical examination of EPS by atomic force microscopy revealed that the EPS formed densely packed mesh-like structure with irregular spherical lumps. The EPS also showed high thermal stability with a degradation temperature of 287.5 °C and melting point at 274.65 °C. EPS was semi-crystalline with crystallinity index of 0.23 and showed 100% water solubility index. These characteristics of the EPS would make it a promising hydrocolloid for food industries as bio-thickeners, stabilizers and also as an encapsulating material for delivery of food bioactive compounds. This is the first study reporting the galactan compose of the EPS from lactic acid bacteria.
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Affiliation(s)
- Digambar Kavitake
- Department of Food Science and Technology, Pondicherry University, Pondicherry 605014, India
| | - Palanisamy Bruntha Devi
- Department of Food Science and Technology, Pondicherry University, Pondicherry 605014, India
| | - Sanjay Pratap Singh
- Department of Food Science and Technology, Pondicherry University, Pondicherry 605014, India
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16
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Mende S, Rohm H, Jaros D. Influence of exopolysaccharides on the structure, texture, stability and sensory properties of yoghurt and related products. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2015.08.002] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Wang J, Xing Z, Tang W, Zheng Y, Wang Y. Isolation, identification, and potential probiotic characterization of one Lactococcus from Kefir grain. Food Sci Biotechnol 2015. [DOI: 10.1007/s10068-015-0231-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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18
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van de Velde F, de Hoog EH, Oosterveld A, Tromp RH. Protein-Polysaccharide Interactions to Alter Texture. Annu Rev Food Sci Technol 2015; 6:371-88. [DOI: 10.1146/annurev-food-022814-015558] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Els H.A. de Hoog
- NIZO food research, Kernhemseweg 2, 6718 ZB Ede, The Netherlands;
| | | | - R. Hans Tromp
- NIZO food research, Kernhemseweg 2, 6718 ZB Ede, The Netherlands;
- Van't Hoff Laboratory for Physical and Colloid Chemistry, Debye Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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19
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Li W, Xia X, Tang W, Ji J, Rui X, Chen X, Jiang M, Zhou J, Zhang Q, Dong M. Structural characterization and anticancer activity of cell-bound exopolysaccharide from Lactobacillus helveticus MB2-1. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:3454-3463. [PMID: 25798529 DOI: 10.1021/acs.jafc.5b01086] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel cell-bound exopolysaccharide (c-EPS) was isolated from Lactobacillus helveticus MB2-1 by ultrasonic extraction, anion exchange, and gel filtration chromatography before being structurally characterized. The c-EPS is a heteropolysaccharide with an average molecular weight of 1.83 × 10(5) Da and is composed of glucose, mannose, galactose, rhamnose, and arabinose at a molar ratio of 3.12:1.01:1.00:0.18:0.16. Methylation analysis and nuclear magnetic resonance analysis revealed that the c-EPS is a linear glucomannogalactan containing repeating units of → 6)-β-D-Manp-(1 → 3)-β-D-Glcp-(1 → 3)-β-D-Glcp-(1 → 3)-β-D-Glcp-(1 → 4)-α-D-Galp-(1 → and trace amounts of Rhap-(1 → and (1 → 4)-Arap residues. Complex formation with Congo red demonstrated a triple-strand helical conformation for the c-EPS. Scanning electron microscopy of the c-EPS revealed many regular feather-like structural units. Topographical examination of c-EPS by atomic force microscopy revealed that the c-EPS formed rounded-to-spherical lumps with different sizes and chain formations. Furthermore, preliminary in vitro tests revealed that c-EPS significantly inhibited the proliferation of HepG-2, BGC-823, and especially HT-29 cancer cells.
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Affiliation(s)
- Wei Li
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Xiudong Xia
- ‡Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210095, P. R. China
| | - Weizhi Tang
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Juan Ji
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Xin Rui
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Xiaohong Chen
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Mei Jiang
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Jianzhong Zhou
- ‡Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, Jiangsu 210095, P. R. China
| | - Qiuqin Zhang
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
| | - Mingsheng Dong
- †College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, P. R. China
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