51
|
Characterization of Exopolysaccharides (EPSs) Obtained from Ligilactobacillus salivarius Strains and Investigation at the Prebiotic Potential as an Alternative to Plant Prebiotics at Poultry. Probiotics Antimicrob Proteins 2021; 14:49-59. [PMID: 33913089 DOI: 10.1007/s12602-021-09790-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
In this study, it was aimed to reveal the potential of using exopolysaccharides (EPS) obtained from Ligilactobacillus salivarius as a prebiotic that regulates chicken intestinal microbiota. Characterization of EPS obtained from L. salivarius BIS312 (EPSBIS312) and BIS722 (EPSBIS722) strains was demonstrated by high performance liquid chromatography (HPLC), nuclear magnetic resonance (NMR), and size-exclusion chromatography (SEC) analyses. It was determined that the molecular weight of both EPS is in the range of 104-106 Daltons, and there are 4 types of monomers in their structure. Anti-biofilm and anti-quorum sensing effects of EPSBIS312 and EPSBIS722 were determined. EPSBIS312 and EPSBIS722 showed a strong anti-biofilm effect on Enterococcus faecalis ATCC 29212, Staphylococcus aureus EB-1, and Escherichia coli ATCC 11229. The anti-quorum sensing study revealed that the EPSBIS722 had a higher effect than the EPSBIS312. The effect of different concentrations of EPS (2.5%, 5%, 10%) on lactobacilli growth stimulator (LGS) was evaluated. The highest LGS was promoted at 10% concentration while the lowest LGS was promoted at 2.5% concentration by EPSBIS722. In addition, adhesion abilities of EPSBIS312 and EPSBIS722 in HT-29 colorectal adenocarcinoma cell line were tested. EPSs significantly increased the ability to adhere to HT-29 cells. The characterized EPSs may be an alternative to plant prebiotics such as inulin at poultry.
Collapse
|
52
|
Saleem M, Malik S, Mehwish HM, Ali MW, Hussain N, Khurshid M, Rajoka MSR, Chen Y. Isolation and functional characterization of exopolysaccharide produced by Lactobacillus plantarum S123 isolated from traditional Chinese cheese. Arch Microbiol 2021; 203:3061-3070. [PMID: 33791833 DOI: 10.1007/s00203-021-02291-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/15/2021] [Accepted: 03/17/2021] [Indexed: 12/23/2022]
Abstract
During the past few years, there are growing interests in the potential use of exopolysaccharide (EPS) in the food industry as an efficient biopolymer because of its exceptional biological features. Therefore, the aim of the present study is EPS production by Lactobacillus Plantarum S123 (S123 EPS), its partial structural and biopotential characterization. The results from this study suggested that the major portion of S123 EPS has an amorphous sponge-like structure with partial crystalline nature. The FTIR and NMR results suggested that the S123 EPS consists of carbonyl and hydroxyl groups, respectively. Furthermore, the results of technological as well as biotechnological characterization suggested that the S123 EPS was exhibited excellent antibacterial activity against Gram-positive (7.2 mm) and Gram-negative bacteria (11.5 mm), DPPH radical scavenging activity (> 65%), water holding capacity (326.6 ± 0.5%), oil holding capacity (995.3 ± 0.2%), flocculation (89.5 ± 0.6%), and emulsifying (80.1 ± 1.1%) activities. Overall, the present results suggested that due to the highly porous structure and efficient biotechnological potential, S123 EPS from Lactobacillus plantarum S123 (L. plantarum S123) can be used in the functional food product.
Collapse
Affiliation(s)
- Muhammad Saleem
- Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, 518060, Guangdong, China.,Department of Optoelectronic Science and Technology, Shenzhen University, Shenzhen, 518060, People's Republic of China.,Department of Chemistry, University of Kotli, Kotli, Azad Jammu and Kashmir, Pakistan
| | - Samiullah Malik
- School of Basic Medicine, Health Science Center, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Hafiza Mahreen Mehwish
- School of Basic Medicine, Health Science Center, Shenzhen University, Shenzhen, 518060, People's Republic of China
| | - Muhammad Waqas Ali
- Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, 518060, Guangdong, China
| | - Nazim Hussain
- Centre for Applied Molecular Biology (CAMB), University of the Punjab, Lahore, 53700, Pakistan
| | - Mohsin Khurshid
- Department of Microbiology, Government College University, Faisalabad, Pakistan
| | - Muhammad Shahid Riaz Rajoka
- School of Basic Medicine, Health Science Center, Shenzhen University, Shenzhen, 518060, People's Republic of China. .,Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai, 980-8572, Japan.
| | - Yougen Chen
- Institute for Advanced Study, Shenzhen University, Nanshan District, Shenzhen, 518060, Guangdong, China.
| |
Collapse
|
53
|
Melatonin receptors increase Momordica’s anticancer effects against PC-3 and HT-29. JOURNAL OF CONTEMPORARY MEDICINE 2021. [DOI: 10.16899/jcm.849993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
54
|
Zhang Y, Liu W, Wei Z, Yin B, Man C, Jiang Y. Enhancement of functional characteristics of blueberry juice fermented by Lactobacillus plantarum. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110590] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
55
|
Antibiofilm Activity of Antarctic Sponge-Associated Bacteria against Pseudomonas aeruginosa and Staphylococcus aureus. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2021. [DOI: 10.3390/jmse9030243] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Bioprospecting in unusual marine environments provides an innovative approach to search novel biomolecules with antibiofilm activity. Antarctic sponge-associated bacteria belonging to Colwellia, Pseudoalteromonas, Shewanella and Winogradskyella genera were evaluated for their ability to contrast the biofilm formation by Pseudomonas aeruginosa ATCC 27853 and Staphylococcus aureus ATCC 29213, as model organisms. All strains were able to produce biofilm at both 4 and 25 °C, with the highest production being for Colwellia, Shewanella and Winogradskyella strains at 4 °C after 24 h. Antibiofilm activity of cell-free supernatants (CFSs) differed among strains and on the basis of their incubation temperature (CFSs4°C and CFSs25°C). The major activity was observed by CFSs4°C against S. aureus and CFSs25°C against P. aeruginosa, without demonstrating a bactericidal effect on their growth. Furthermore, the antibiofilm activity of crude extracts from Colwellia sp. GW185, Shewanella sp. CAL606, and Winogradskyella sp. CAL396 was also evaluated and visualized by confocal laser scanning microscopic images. Results based on the surface-coating assay and surface tension measurements suggest that CFSs and the crude extracts may act as biosurfactants inhibiting the first adhesion of P. aeruginosa and S. aureus. The CFSs and the novel biopolymers may be useful in applicative perspectives for pharmaceutical and environmental purposes.
Collapse
|
56
|
Muthukrishnan L. Imminent antimicrobial bioink deploying cellulose, alginate, EPS and synthetic polymers for 3D bioprinting of tissue constructs. Carbohydr Polym 2021; 260:117774. [PMID: 33712131 DOI: 10.1016/j.carbpol.2021.117774] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/16/2021] [Accepted: 02/02/2021] [Indexed: 12/24/2022]
Abstract
3D printing, one of its kinds has been a recent technological trend to fabricate complex and patterned biomaterial with controlled precision. With the conventional kick-start of printing metals and plastics, advancements in printing viable cells, polysaccharides or microbes themselves have been achieved. The additive antimicrobial properties in bioinks sourced from organic and inorganic materials have profound implications in tissue engineering. Cellulose, alginate, exopolysaccharides, ceramics and synthetic polymers are integrated as a viable component in inks and used for bio-printing. To date, bacterial infection and immunogenicity pose a potential health risk during a tissue implant or bone substitution. In order to mitigate microbial infection, antimicrobial bioinks with significant antimicrobial potential have been the much sought after strategies. This approach could be an effective frontline defense against microbial interference in tissue engineering and biomedical applications. An overview on the antimicrobial potential of polysaccharides as bioinks for 3D bioprinting has been critically reviewed.
Collapse
Affiliation(s)
- Lakshmipathy Muthukrishnan
- Department of Conservative Dentistry & Endodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Poonamallee High Road, Chennai, Tamil Nadu, 600 077, India.
| |
Collapse
|
57
|
Ge X, Ma F, Zhang B. Effect of intense pulsed light on
Lactobacillus bulgaricus
exopolysaccharide yield, chemical structure and antioxidant activity. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.14730] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xinyu Ge
- College of Food Science Shenyang Agricultural University Shenyang110866China
| | - Fengming Ma
- College of Food Science Shenyang Agricultural University Shenyang110866China
| | - Baiqing Zhang
- College of Food Science Shenyang Agricultural University Shenyang110866China
| |
Collapse
|
58
|
|
59
|
Abstract
Toxic metal contamination has serious effects on human health. Crude oil that may contain toxic metals and oil spills can further contaminate the environment and lead to increased exposure. This being the case, we chose to study the bio-production of inexpensive, environmentally safe materials for remediation. Streptomyces sp. MOE6 is a Gram-positive, filamentous bacterium from soil that produces an extracellular polysaccharide (MOE6-EPS). A one-factor-at-a-time experiments showed that the maximum production of MOE6-EPS was achieved at 35 °C, pH 6, after nine days of incubation with soluble starch and yeast extract as carbon sources and the latter as the nitrogen source. We demonstrated that MOE6-EPS has the capacity to remove toxic metals such as Co(II), Cr(VI), Cu(II) and U(VI) and from solution either by chelation and/or reduction. Additionally, the bacterium was found to produce siderophores, which contribute to the removal of metals, specifically Fe(III). Additionally, purified MOE6-EPS showed emulsifying activities against various hydrophobic substances, including olive oil, corn oil, benzene, toluene and engine oil. These results indicate that EPS from Streptomyces sp. MOE6 may be useful to sequester toxic metals and oil in contaminated environments.
Collapse
|
60
|
Xu X, Qiao Y, Peng Q, Shi B, Dia VP. Antioxidant and Immunomodulatory Properties of Partially purified Exopolysaccharide from Lactobacillus Casei Isolated from Chinese Northeast Sauerkraut. Immunol Invest 2021; 51:748-765. [PMID: 33416001 DOI: 10.1080/08820139.2020.1869777] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: Exopolysaccharides (EPS) from Lactobacillus spp. have been found to have biological activities. Our previous work demonstrated the antibiofilm activity of EPS from Lactobacillus casei NA-2 (L.casei NA-2) isolated from northeast Chinese sauerkraut (Suan Cai). The present study has focussed on the antioxidant and immunomodulatory activities of the EPS in vitro.Methods: Antioxidant properties of the EPS were evaluated by the radical-scavenging activities in vitro. The immunomodulatory effects of EPS were assayed by measuring nitric oxide (NO), interleukin 6 (IL-6), tumor necrosis factor-alpha (TNF-α), and reactive oxygen species (ROS) in RAW 264.7 macrophages, and the mechanism was investigated through NF-κB and JNK.Result: EPS contains 88% total sugar, with the molecular weights (Mw) of 1.3 × 106 Da, 6.4 × 105 Da, 2.0 × 105 Da, and 1.4 × 104 Da. EPS showed antioxidant activity by scavenging hydroxyl radicals (42% at 1.2 mg/mL), superoxide radicals (76% at 100 µg/mL), and DPPH (80% at 10 mg/mL); and did not affect the proliferation of unstimulated or lipopolysaccharide (LPS)-induced RAW 264.7 cells at the concentrations ranging from 31.25 to 500 µg/mL. Results showed EPS promoted the production of ROS and TNF-α involved in NF-κB p65 and JNK signaling pathways in unstimulated RAW 264.7 cells. On the other hand, the levels of NO and iNOS were reduced after EPS treatment in LPS-induced RAW 264.7 cells.Conclusion: Our results showed the protective effect against oxidative damage and potential immunomodulatory and anti-inflammatory properties of EPS from Lactobacillus casei NA-2.
Collapse
Affiliation(s)
- Xiaoqing Xu
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China.,Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, Tennessee, USA
| | - Yu Qiao
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qing Peng
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bo Shi
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Vermont P Dia
- Department of Food Science, The University of Tennessee Institute of Agriculture, Knoxville, Tennessee, USA
| |
Collapse
|
61
|
Chang H, Zhou C, He J, Pan D, Wang Y, Zhang X, Cao J. Identifying and characterizing the components related to the brown color of Chinese sugar-smoked chicken during processing. Poult Sci 2020; 100:100937. [PMID: 33652531 PMCID: PMC7936203 DOI: 10.1016/j.psj.2020.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 12/05/2020] [Accepted: 12/15/2020] [Indexed: 11/27/2022] Open
Abstract
The desired color is a key indicator for consumer acceptability of Chinese sugar-smoked chicken. To investigate the formation of color attributes of Chinese sugar-smoked chicken during processing, color values, structural characteristics, and components of brown pigment were evaluated in 2 groups, which were defined as brown skin (BS) and normal skin (NS) of Chinese sugar-smoked chicken based on their color values. Compared with the NS samples, the BS samples showed significantly lower values of lightness, redness, and yellowness and higher content of malondialdehyde and 5-hydroxymethylfurfural. UV-visible and Fourier-transform infrared spectra suggested that the structure of brown pigment was similar to melanin. The brown pigment consisted of multiple chemical components including the polymer of fructose and glucose, and derivatives produced by lipid oxidation, which were identified by HPLC-tandem mass spectrometry. The polymer content of glucose and fructose, which was demonstrated as sucrose by HPLC analysis, was higher in the BS group than in the NS group. Our results indicated that the higher content of the polymer of glucose and fructose was mainly responsible for the brown color of Chinese sugar-smoked chicken.
Collapse
Affiliation(s)
- Hong Chang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Changyu Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Jun He
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Daodong Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Ying Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Xin Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China
| | - Jinxuan Cao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China; Key Laboratory of Animal Protein Food Processing Technology of Zhejiang Province, Ningbo University, Ningbo 315211, China.
| |
Collapse
|
62
|
Nguyen PT, Nguyen TT, Bui DC, Hong PT, Hoang QK, Nguyen HT. Exopolysaccharide production by lactic acid bacteria: the manipulation of environmental stresses for industrial applications. AIMS Microbiol 2020; 6:451-469. [PMID: 33364538 PMCID: PMC7755584 DOI: 10.3934/microbiol.2020027] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 11/12/2020] [Indexed: 02/06/2023] Open
Abstract
Exopolysaccharides (EPSs) are biological polymers secreted by microorganisms including Lactic acid bacteria (LAB) to cope with harsh environmental conditions. EPSs are one of the main components involved in the formation of extracellular biofilm matrix to protect microorganisms from adverse factors such as temperature, pH, antibiotics, host immune defenses, etc.. In this review, we discuss EPS biosynthesis; the role of EPSs in LAB stress tolerance; the impact of environmental stresses on EPS production and on the expression of genes involved in EPS synthesis. The evaluation results indicated that environmental stresses can alter EPS biosynthesis in LAB. For further studies, environmental stresses may be used to generate a new EPS type with high biological activity for industrial applications.
Collapse
Affiliation(s)
- Phu-Tho Nguyen
- Graduate University of Sciences and Technology, Vietnam Academy of Science and Technology, Ha Noi, Vietnam
- Department of Biotechnology, An Giang University, An Giang, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Tho-Thi Nguyen
- Ho Chi Minh City University of Technology (HUTECH), Ho Chi Minh City, Vietnam
| | - Duc-Cuong Bui
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, United States
| | - Phuoc-Toan Hong
- LAVI's Institute for Agricultural Science and Plant Breeding, Ho Chi Minh City, Vietnam
| | - Quoc-Khanh Hoang
- Institute of Tropical Biology, Vietnam Academy of Science and Technology, Ho Chi Minh City, Vietnam
| | - Huu-Thanh Nguyen
- Department of Biotechnology, An Giang University, An Giang, Vietnam
- Vietnam National University Ho Chi Minh City, Ho Chi Minh City, Vietnam
| |
Collapse
|
63
|
Wang J, Salem DR, Sani RK. Two new exopolysaccharides from a thermophilic bacterium Geobacillus sp. WSUCF1: Characterization and bioactivities. N Biotechnol 2020; 61:29-39. [PMID: 33188978 DOI: 10.1016/j.nbt.2020.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 11/06/2020] [Accepted: 11/07/2020] [Indexed: 11/16/2022]
Abstract
The production, characterization and bioactivities of exopolysaccharides (EPSs) from a thermophilic bacterium Geobacillus sp. strain WSUCF1 were investigated. Using glucose as a carbon source 525.7 mg/L of exoproduct were produced in a 40-L bioreactor at 60 °C. Two purified EPSs were obtained: EPS-1 was a glucomannan containing mannose and glucose in a molar ratio of 1:0.21, while EPS-2 was composed of mannan only. The molecular weights of both EPSs were estimated to be approximately 1000 kDa, their FTIR and NMR spectra indicated the presence of α-type glycosidic bonds in a linear structure, and XRD analysis indicated a low degree of crystallinity of 0.11 (EPS-1) and 0.27 (EPS-2). EPS-1 and EPS-2 demonstrated high degradation temperatures of 319 °C and 314 °C, respectively, and non-cytotoxicity to HEK-293 cells at 2 and 3 mg/mL, respectively. In addition, both showed antioxidant activities. EPSs from strain WSUCF1 may expand the applications of microorganisms isolated from extreme environments and provide a valuable resource for exploitation in biomedical fields such as drug delivery carriers.
Collapse
Affiliation(s)
- Jia Wang
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA; BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA
| | - David R Salem
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA; Department of Materials and Metallurgical Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA; Composite and Nanocomposite Advanced Manufacturing Center - Biomaterials (CNAM-Bio Center), Rapid City, SD, 57701, USA.
| | - Rajesh K Sani
- Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA; Composite and Nanocomposite Advanced Manufacturing Center - Biomaterials (CNAM-Bio Center), Rapid City, SD, 57701, USA; BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD, 57701, USA.
| |
Collapse
|
64
|
Production and characterization of exopolysaccharide from the sponge-associated Bacillus subtilis MKU SERB2 and its in-vitro biological properties. Int J Biol Macromol 2020; 166:1471-1479. [PMID: 33171181 DOI: 10.1016/j.ijbiomac.2020.11.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 01/03/2023]
Abstract
In this study, the sponge-associated a potential endosymbiotic bacterium, Bacillus subtilis MKU SERB2 was identified and optimized the production of exopolysaccharide (EPS) by using response surface methodology (RSM). The central composite rotatable design (CCRD) exhibited the highest yield of EPS (617.81 μg/mL) obtained from the optimized medium containing 11.5 g/L of sucrose, 3.5 g/L of yeast extract, 3.0 g/L of peptone, and 2.5 g/L of calcium chloride. Fourier transform infrared (FTIR) spectrum of purified EPS indicated that the presence of carboxyl, hydroxyl, and amide as functional groups, and their structural composition was confirmed by 1H and 13C nuclear magnetic resonance (NMR) analysis. Moreover, the fibrous, porous and semi-crystalline nature of EPS was confirmed by SEM and X-ray powder diffraction (XRD) analysis and the EDX inferred demonstrated the presence of C, Na, O, N, S, and Cl respectively. Further, the isolated EPS exhibited potent antioxidant activity and moderate anticoagulant efficacy whereas there was no hemolytic and lymphocytes toxicity. Overall, our result suggests that the functional and biological properties of the EPS imply the potential applications in food and pharmaceutical industries in the future.
Collapse
|
65
|
Ebadi Nezhad SJ, Edalatian Dovom MR, Habibi Najafi MB, Yavarmanesh M, Mayo B. Technological characteristics of Lactobacillus spp. isolated from Iranian raw milk Motal cheese. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
66
|
Ren YY, Sun PP, Li HR, Zhu ZY. Effects of Na2SeO3 on growth, metabolism, antioxidase and enzymes involved in polysaccharide synthesis of Cordyceps militaris. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
67
|
Yücel N, İspirli H, Mercan E, Erdoğan Ü, Dertli E. Synthesis of alternan-stabilized zinc nanoparticles: morphological, thermal, antioxidant and antimicrobial characterization. Prep Biochem Biotechnol 2020; 51:331-339. [PMID: 32903155 DOI: 10.1080/10826068.2020.1815059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This study aimed to synthesize zinc nanoparticles with antimicrobial and antioxidant activities using alternan (ZnNPs-Alt) produced by Lactobacillus reuteri E81 as the stabilizing agent. For the characterization of the ZnNPs-Alt, UV-vis spectroscopy, SEM, TEM and EDX analysis, XRD, FTIR and DSC analysis were applied. The functional role of ZnNPs-Alt was tested by determination of their antioxidant activities by DPPH and CUPRAC methodologies and their antibacterial and antifungal activities. Results of this study demonstrated that alternan was utilized as a successful stabilizer to produce crystalline, thermally stabile ZnNPs-Alt with a particle size of ∼ 100 nm. Importantly, strong antioxidant and antimicrobial activities were observed for ZnNPs-Alt in a concentration dependent manner. These findings confirmed the role of alternan as a stabilizing agent for the production of ZnNPs-Alt with functional roles.
Collapse
Affiliation(s)
- Nur Yücel
- Department of Food Engineering, Faculty of Engineering, Bayburt University, Bayburt, Turkey
| | - Hümeyra İspirli
- Central Research Laboratory, Bayburt University, Bayburt, Turkey
| | - Emin Mercan
- Department of Food Engineering, Faculty of Engineering, Bayburt University, Bayburt, Turkey
| | - Ümmügülsüm Erdoğan
- Department of Food Engineering, Faculty of Engineering, Bayburt University, Bayburt, Turkey
| | - Enes Dertli
- Food Engineering Department, Chemical and Metallurgical Engineering Faculty, Yıldız Technical University, İstanbul, Turkey
| |
Collapse
|
68
|
de Sousa MA, Muller MP, Berghahn E, de Souza CFV, Granada CE. New enterococci isolated from cheese whey derived from different animal sources: High biotechnological potential as starter cultures. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
69
|
Khan F, Oloketuyi SF, Kim YM. Diversity of Bacteria and Bacterial Products as Antibiofilm and Antiquorum Sensing Drugs Against Pathogenic Bacteria. Curr Drug Targets 2020; 20:1156-1179. [PMID: 31020938 DOI: 10.2174/1389450120666190423161249] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/25/2019] [Accepted: 04/12/2019] [Indexed: 12/14/2022]
Abstract
The increase in antibiotic resistance of pathogenic bacteria has led to the development of new therapeutic approaches to inhibit biofilm formation as well as interfere quorum sensing (QS) signaling systems. The QS system is a phenomenon in which pathogenic bacteria produce signaling molecules that are involved in cell to cell communication, production of virulence factors, biofilm maturation, and several other functions. In the natural environment, several non-pathogenic bacteria are present as mixed population along with pathogenic bacteria and they control the behavior of microbial community by producing secondary metabolites. Similarly, non-pathogenic bacteria also take advantages of the QS signaling molecule as a sole carbon source for their growth through catabolism with enzymes. Several enzymes are produced by bacteria which disrupt the biofilm architecture by degrading the composition of extracellular polymeric substances (EPS) such as exopolysaccharide, extracellular- DNA and protein. Thus, the interference of QS system by bacterial metabolic products and enzymatic catalysis, modification of the QS signaling molecules as well as enzymatic disruption of biofilm architecture have been considered as the alternative therapeutic approaches. This review article elaborates on the diversity of different bacterial species with respect to their metabolic products as well as enzymes and their molecular modes of action. The bacterial enzymes and metabolic products will open new and promising perspectives for the development of strategies against the pathogenic bacterial infections.
Collapse
Affiliation(s)
- Fazlurrahman Khan
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan 48513, South Korea
| | | | - Young-Mog Kim
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan 48513, South Korea.,Department of Food Science and Technology, Pukyong National University, Busan 48513, South Korea
| |
Collapse
|
70
|
Optimization of Biosynthesis Conditions for the Production of Exopolysaccharides by Lactobacillus plantarum SP8 and the Exopolysaccharides Antioxidant Activity Test. Indian J Microbiol 2020; 60:334-345. [PMID: 32647393 DOI: 10.1007/s12088-020-00865-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 03/19/2020] [Indexed: 02/02/2023] Open
Abstract
Lactobacillus plantarum SP8, isolated from traditional Chinese pickle juice, was utilized for the production of exopolysaccharides (EPSs), but the EPS yield was low under normal MRS medium. The single factor experiment and response surface methodology were used to optimize the medium components and culture conditions and the optimal conditions for EPS production were successfully obtained. Results showed that the optimum condition was glucose 22 g/L, yeast extract 30 g/L, fermentation temperature 35.6 °C, fermentation time 22 h and the theoretical EPS yield was 282.494 mg/L. The results were similar to the actual yield, 280.105 mg/L. By optimizing the culture conditions, the yield of L. plantarum SP8 EPS was improved by nearly 19 times. In the gas chromatography analysis, it was found that L. plantarum SP8 EPS consisted of d-rhamnose, arabinose, galactose, and d-acetylglucosamine, but glucose was not included, which was quite different from the reported heteropolysaccharide component of Lactobacillus. Furthermore, the antioxidant activity of L. plantarum SP8 EPS was evaluated with the in vitro scavenging abilities on DPPH·, O 2 - and ·OH. The in vitro antioxidant activity study indicated that L. plantarum SP8 EPS possessed certain antioxidant activity. All results demonstrated the potential of L. plantarum SP8 in the food and dairy industry.
Collapse
|
71
|
Onbas T, Osmanagaoglu O, Kiran F. Potential Properties of Lactobacillus plantarum F-10 as a Bio-control Strategy for Wound Infections. Probiotics Antimicrob Proteins 2020; 11:1110-1123. [PMID: 30523603 DOI: 10.1007/s12602-018-9486-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In this study, Lactobacillus plantarum F-10, a promising probiotic strain isolated from fecal microbiota of healthy breastfed infant, was assessed as a bio-control strategy for wound infections. Pseudomonas aeruginosa PAO1/ATCC 27853, methicillin-resistant Staphylococcus aureus ATCC 43300, and their hospital-derived strains isolated from skin chronic wound samples were used as important skin pathogens. The cell-free extract (CFE) of the strain F-10 was shown to inhibit the growth of all pathogens tested, while no inhibition was observed when CFE was neutralized. The strain displayed no hemolysis and exhibited a strong auto-aggregating phenotype (51.48 ± 1.45%, 5 h) as well as co-aggregation. Antibiotic resistance profile was found to be safe according to the European Food Safety Authority. Biofilm formation was measured by crystal violet assay and visualized with scanning electron microscopy and confocal laser scanning microscopy. One hundred percent reduction in biofilm formation of all pathogens tested was obtained by sub-MIC value (12.5 mg/ml) of CFE following 24-h co-incubation. Inhibition of quorum sensing-controlled virulence factors (motility, protease and elastase activity, production of pyocyanin and rhamnolipid) of P. aeruginosa strains was also observed. DPPH radical scavenging activity of the CFE was determined as 88.57 ± 0.49%. In conclusion, our results suggest that L. plantarum F-10 may represent an alternative bio-control strategy against skin infections with its antimicrobial, anti-biofilm, anti-quorum sensing, and antioxidant activity.
Collapse
Affiliation(s)
- Tugce Onbas
- Faculty of Science, Department of Biology, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Ozlem Osmanagaoglu
- Faculty of Science, Department of Biology, Ankara University, Tandogan, 06100, Ankara, Turkey
| | - Fadime Kiran
- Faculty of Science, Department of Biology, Ankara University, Tandogan, 06100, Ankara, Turkey.
| |
Collapse
|
72
|
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.
Collapse
|
73
|
Liao N, Pang B, Jin H, Xu X, Yan L, Li H, Shao D, Shi J. Potential of lactic acid bacteria derived polysaccharides for the delivery and controlled release of oral probiotics. J Control Release 2020; 323:110-124. [DOI: 10.1016/j.jconrel.2020.04.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 01/21/2023]
|
74
|
Xu X, Peng Q, Zhang Y, Tian D, Zhang P, Huang Y, Ma L, Dia VP, Qiao Y, Shi B. Antibacterial potential of a novel Lactobacillus casei strain isolated from Chinese northeast sauerkraut and the antibiofilm activity of its exopolysaccharides. Food Funct 2020; 11:4697-4706. [PMID: 32406901 DOI: 10.1039/d0fo00905a] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lactobacillus spp., as probiotics, have shown efficacy in the inhibition of pathogenic bacteria in the intestinal tract. In this study, we investigated the antibacterial activity of Lactobacillus casei NA-2, which was isolated from northeast sauerkraut in China. The results of co-culture suggested that L. casei NA-2 could inhibit the growth of Bacillus cereus, Staphylococcus aureus, Salmonella typhimurium and Escherichia coli O157:H7. Moreover, L. casei NA-2 could adhere to the four pathogenic bacteria potentially associated with its exopolysaccharide (EPS). EPS from L. casei NA-2 was then isolated and its activity determined. The results showed that EPS inhibited the biofilms of B. cereus, S. aureus, S. typhimurium and E. coli O157:H7, with the highest inhibition ratios of 95.5% ± 0.1%, 30.2% ± 3.3%, 14.3% ± 0.6%, and 16.9% ± 5.4%, respectively. Moreover, EPS was able to disperse B. cereus, S. aureus, S. typhimurium and E. coli O157:H7 by 94.1% ± 1.2%, 31.8% ± 8.6%, 40.8% ± 3.3% and 49.6% ± 3.8%, respectively. Results showed that EPS from L. casei NA-2 have potential antibacterial properties by inhibiting biofilm formation and dispersing pathogenic bacteria. In conclusion, the antibiofilm property of the EPS on the surface of L. casei NA-2 is one of the possible reasons for antibacterial activity of L. casei NA-2.
Collapse
Affiliation(s)
- Xiaoqing Xu
- Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
75
|
Mahdhi A, Chakroun I, Espinosa-Ruiz C, Messina CM, Arena R, Majdoub H, Santulli A, Mzoughi R, Esteban MA. Dietary administration effects of exopolysaccharide from potential probiotic strains on immune and antioxidant status and nutritional value of European sea bass (Dicentrarchus labrax L.). Res Vet Sci 2020; 131:51-58. [PMID: 32302865 DOI: 10.1016/j.rvsc.2020.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 03/14/2020] [Accepted: 04/04/2020] [Indexed: 10/24/2022]
Abstract
The use of biological immunostimulants is considered a valuable practice to improve culture conditions in aquaculture sector that may help to increase production and maintain healthy environment. We undertook this study in order to evaluate the potential effect of the administration of two exopolysaccharides (EPS) "EPLB" and "EPB" derived from potential probiotic strains on immune and antioxidant status of European sea bass (Dicentrarchus labrax L.) larvae. In order to find out if the EPSs have an effect on the biochemical composition during the trial period, the nutritional value has been evaluated. The results revealed that expression levels of immune-relevant genes (infg, Il1b, Il8, Il6 and tcr-β) in the gut and head kidney and the scavenging enzymes (cat, sod, gr) genes in the liver were modulated. In fact, the dietary supplementation with the tested EPSs, significantly enhances the expression of immune-associated genes in the head-kidney, particularly infg and tcrβ, as well as catalase gene in liver. During the period of study, EPSs administration did not affect the fatty acid profiles of larvae, which is balanced. This is confirmed by the Docosahexaenoic acid / Eicosapentaenoic acid ratio and demonstrates that EPLB and EPB can be administrated without any negative effect on biochemical composition of European sea bass. The present findings provided evidence that the tested EPSs with antibacterial and antioxidant activities can enhance immune response without negative effect on the biochemical composition. The used EPSs can be considered as a good source of natural functional aquafeed ingredients for European sea bass.
Collapse
Affiliation(s)
- Abdelkarim Mahdhi
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the envirOnment and Products. Faculty of Pharmacy, University of Monastir, Tunisia.
| | - Ibtissem Chakroun
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the envirOnment and Products. Faculty of Pharmacy, University of Monastir, Tunisia
| | - Cristóbal Espinosa-Ruiz
- Immunobiology for aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100 Murcia, Spain; University of Palermo, Department of Earth and Sea Science, Marine Biochemistry and Ecotoxicology Laboratory, (Trapani), via Barlotta 4, 91100, Italy
| | - Concetta Maria Messina
- University of Palermo, Department of Earth and Sea Science, Marine Biochemistry and Ecotoxicology Laboratory, (Trapani), via Barlotta 4, 91100, Italy
| | - Rosaria Arena
- University of Palermo, Department of Earth and Sea Science, Marine Biochemistry and Ecotoxicology Laboratory, (Trapani), via Barlotta 4, 91100, Italy
| | - Hatem Majdoub
- Laboratory of Analysis, Treatment and Valorization of the Polluants of the Environment and Products, Faculty of Pharmacy, University of Monastir, Tunisia
| | - Andrea Santulli
- University of Palermo, Department of Earth and Sea Science, Marine Biochemistry and Ecotoxicology Laboratory, (Trapani), via Barlotta 4, 91100, Italy
| | - Ridha Mzoughi
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the envirOnment and Products. Faculty of Pharmacy, University of Monastir, Tunisia
| | - Maria Angeles Esteban
- Immunobiology for aquaculture Group, Department of Cell Biology and Histology, Faculty of Biology, Campus Regional de Excelencia Internacional "Campus Mare Nostrum", University of Murcia, 30100 Murcia, Spain
| |
Collapse
|
76
|
Mengi B, Ikeda S, Murayama D, Bochimoto H, Matsumoto S, Kitazawa H, Urashima T, Fukuda K. Factors affecting decreasing viscosity of the culture medium during the stationary growth phase of exopolysaccharide-producing Lactobacillus fermentum MTCC 25067. BIOSCIENCE OF MICROBIOTA FOOD AND HEALTH 2020; 39:160-168. [PMID: 32775135 PMCID: PMC7392921 DOI: 10.12938/bmfh.2019-051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 03/06/2020] [Indexed: 11/05/2022]
Abstract
Lactobacillus fermentum MTCC 25067 produces a hetero-exopolysaccharide (HePS) when cultured which forms supramolecular networks in the culture medium, increasing
the viscosity. In the present study, the viscosity of the bacterial culture reached its maximum at 48 hr of cultivation and then decreased during a stationary growth phase lasting
for up to 144 hr. The monosaccharide composition did not change during the stationary growth phase, whereas degradation of HePS molecules was noticeable, leading to partial
disintegration of their supramolecular networks. The viscosity values of the HePS purified from the culture and dissolved in a fresh medium indicated little contribution of medium
components to the viscosity. Absence of the apparent network structure of the HePS in the surrounding area of bacterial cells was observed during the late growth phase, supporting
the idea that the decreases in culture viscosity during the prolonged period of cultivation were caused mainly by reduced interactions between bacterial cells and the intact
supramolecular networks as a consequence of decreasing bacterial cell wall integrity and partial degradation of HePS molecules.
Collapse
Affiliation(s)
- Bharat Mengi
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Shinya Ikeda
- Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA.,Current address: Department of Life and Food Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
| | - Daiki Murayama
- Department of Food Science, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Hiroki Bochimoto
- Health Care Administration Center, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.,Current address: Division of Aerospace Medicine, Department of Cell Physiology, The Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, Japan
| | - Shinpei Matsumoto
- Department of Animal and Food Hygiene, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan
| | - Haruki Kitazawa
- Food and Feed Immunology Group, Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Sendai 984-0051, Japan
| | - Tadasu Urashima
- Department of Life and Food Sciences, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
| | - Kenji Fukuda
- Research Center for Global Agromedicine, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
| |
Collapse
|
77
|
Vimala RTV, Lija Escaline J, Sivaramakrishnan S. Characterization of self-assembled bioflocculant from the microbial consortium and its applications. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 258:110000. [PMID: 31929048 DOI: 10.1016/j.jenvman.2019.110000] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/17/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
Bioflocculant has been recently exploited in various research activities. In this research, we report for the first time that a novel bioflocculant can self-assemble into nanoparticles with an irregular structure in solution. Bioflocculant has been developed from novel consortium encompassing Enterococcus faecalis, Proteus mirabilis, Lysini bacillus sp., inoculated into the modified medium such as hydrolyzed wheat bran and rice bran extract. Characterization of bioflocculant shows that it is made up of mannose, fructose, raffinose, and galactose with a slightly negative charges. They are further characterized by FTIR and XPS. 3D-EEM and MALDITOF-MS are confirmed the proteoglycan nature of the bioflocculant. These bioflocculant not only exhibits greater biosorption of heavy metals by self-flocculating (or) self-aggregating activity, but also possesses mosquitocidal and anti-biofilm activity due to its cell surface modification. Further research have to be carried out regarding the mechanism of self-assembly nature of bioflocculant into nanoparticle in solution which provide a new path for bioremediation and biomedical application.
Collapse
Affiliation(s)
- R T V Vimala
- Department of Biotechnology, Bharathidasan University, Tiruchirappalli, 620024, India
| | - J Lija Escaline
- Department of Biotechnology, Bharathidasan University, Tiruchirappalli, 620024, India
| | - S Sivaramakrishnan
- Department of Biotechnology, Bharathidasan University, Tiruchirappalli, 620024, India.
| |
Collapse
|
78
|
Lakra AK, Domdi L, Tilwani YM, Arul V. Physicochemical and functional characterization of mannan exopolysaccharide from Weissella confusa MD1 with bioactivities. Int J Biol Macromol 2020; 143:797-805. [DOI: 10.1016/j.ijbiomac.2019.09.139] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/10/2019] [Accepted: 09/22/2019] [Indexed: 11/25/2022]
|
79
|
Hu X, Li D, Qiao Y, Wang X, Zhang Q, Zhao W, Huang L. Purification, characterization and anticancer activities of exopolysaccharide produced by Rhodococcus erythropolis HX-2. Int J Biol Macromol 2019; 145:646-654. [PMID: 31887383 DOI: 10.1016/j.ijbiomac.2019.12.228] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/10/2019] [Accepted: 12/24/2019] [Indexed: 12/12/2022]
Abstract
In the present study, an exopolysaccharide (EPS) producer Rhodococcus erythropolis HX-2 was isolated from Xinjiang oil field, China. The HX-2 EPS (name HPS) production reached 8.957 g/L by RSM in MSM medium. The HPS was purified by ethanol precipitation and fractionation by DEAE-Cellulose and Sepharose column, the yield of HPS was 3.736 g/L. HPS composed by glucose, galactose, fucose, mannose and glucuronic acid. FT-IR spectroscopy indicated the presence of a large amount of hydroxyl groups. NMR spectroscopy indicated the existence of both α and β-configuration for sugar moieties present in HPS. The degradation temperature (255.4 °C) of the HPS was determined by thermogravimetric analysis (TGA). A reticular structure of HPS was observed by SEM and the AFM analysis of the HPS revealed straight chains line. Meanwhile, the WSI and WHC of HPS were 92.15 ± 3.05% and 189.45 ± 5.65%, respectively. Finally, In vitro anticancer activity purified EPS was evaluated on L929 normal cells, A549 cancer cells, SMMC-7721 liver cancer cells and Hela cervical cancer cell. HPS inhibited the growth of cancer cells in a certain concentration without damage to normal cells. These characteristics indicate that its potential application value in food, industry and pharmaceutical application.
Collapse
Affiliation(s)
- Xin Hu
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Dahui Li
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Yue Qiao
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Xiaohua Wang
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Qi Zhang
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Wei Zhao
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China
| | - Lei Huang
- College of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, Tianjin Key Laboratory of Drug Targeting and Bioimaging, Tianjin University of Technology, Tianjin 300384, China.
| |
Collapse
|
80
|
Wang B, Song Q, Zhao F, Xiao H, Zhou Z, Han Y. Purification and characterization of dextran produced by Leuconostoc pseudomesenteroides PC as a potential exopolysaccharide suitable for food applications. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.08.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
81
|
McCarthy RR, Ullah MW, Booth P, Pei E, Yang G. The use of bacterial polysaccharides in bioprinting. Biotechnol Adv 2019; 37:107448. [DOI: 10.1016/j.biotechadv.2019.107448] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 02/07/2023]
|
82
|
Isolation and characterization of dextran produced by Lactobacillus sakei L3 from Hubei sausage. Carbohydr Polym 2019; 223:115111. [DOI: 10.1016/j.carbpol.2019.115111] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/05/2019] [Accepted: 07/19/2019] [Indexed: 11/22/2022]
|
83
|
Physicochemical and antioxidant properties of a gastroprotective exopolysaccharide produced by Streptococcus thermophilus CRL1190. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.05.036] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
84
|
Sarveswari HB, Solomon AP. Profile of the Intervention Potential of the Phylum Actinobacteria Toward Quorum Sensing and Other Microbial Virulence Strategies. Front Microbiol 2019; 10:2073. [PMID: 31636609 PMCID: PMC6787268 DOI: 10.3389/fmicb.2019.02073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 08/22/2019] [Indexed: 12/22/2022] Open
Abstract
The rapid dissemination of antimicrobial resistance amongst microorganisms and their deleterious effect on public health has propelled the exploration of alternative interventions that target microbial virulence rather than viability. In several microorganisms, the expression of virulence factors is controlled by quorum sensing systems. A comprehensive understanding into microbial quorum sensing systems, virulence strategies and pathogenesis has exposed potential targets whose attenuation may alleviate infectious diseases. Such virulence attenuating natural products sourced from the different phyla of bacteria from diverse ecosystems have been identified. In this review, we discuss chemical entities derived from the phylum Actinobacteria that have demonstrated the potential to inhibit microbial biofilms, enzymes, and other virulence factors both in vivo and in vitro. We also review Actinobacteria-derived compounds that can degrade quorum sensing signal molecules, and the genes encoding such molecules. As many Actinobacteria-derived compounds have been translated into pharmaceutically important agents including antibiotics, the identification of virulence attenuating compounds from this phylum exemplifies their significance as a prospective source for anti-virulent drugs.
Collapse
Affiliation(s)
| | - Adline Princy Solomon
- Quorum Sensing Laboratory, Centre for Research in Infectious Diseases (CRID), School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, India
| |
Collapse
|
85
|
Physicochemical characterization and antioxidant activity of cell-bound exopolysaccharides from Lactobacillus fermentum S1 obtained by two extraction methods. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
86
|
Xu Y, Cui Y, Yue F, Liu L, Shan Y, Liu B, Zhou Y, Lü X. Exopolysaccharides produced by lactic acid bacteria and Bifidobacteria: Structures, physiochemical functions and applications in the food industry. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2019.03.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
87
|
Preparation, partial characterization and biological activity of exopolysaccharides produced from Lactobacillus fermentum S1. J Biosci Bioeng 2019; 129:206-214. [PMID: 31471140 DOI: 10.1016/j.jbiosc.2019.07.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/29/2019] [Accepted: 07/31/2019] [Indexed: 01/01/2023]
Abstract
A high slime-producing Lactobacillus fermentum strain (named as L. fermentum S1) was isolated from traditional fermented Fuyuan pickle, which was made of white turnip and collected from Fuyuan county, Yunnan province, China. We extracted and purified the exopolysaccharides from L. fermentum S1, and investigated their preliminary structure characteristics and biological activities. Three purified exopolysaccharide fractions, designated as EPS1, EPS2 and EPS3, were obtained from the culture supernatant of L. fermentum S1 by ethanol precipitation, anion exchange and gel filtration chromatography. The EPS2 and EPS3 were homogeneous with molecular weights of 4.45 × 106 and 2.82 × 106 Da, respectively. All the purified EPS fractions were composed of glucose, galactose, mannose and arabinose, but with different molar ratios. EPS1, EPS2 and EPS3 presented different surface morphologies and their degradation temperatures were 302.7°C, 316.3°C and 316.9°C, respectively. Bioactivity research showed that L. fermentum S1 EPS elicited free radical scavenging capacity and ferric reducing antioxidant power, and 1 mg/mL of EPS significantly improved the gastrointestinal transit tolerance of non EPS-producing strain L. fermentum LG1. Moreover, S1 EPS had a favorable anti-biofilm activity against Escherichia coli and Staphylococcus aureus. These results indicated that S1 EPS could be explored as a promising functional adjunct for application in foods.
Collapse
|
88
|
Zhang J, Liu L, Chen F. Production and characterization of exopolysaccharides from Chlorella zofingiensis and Chlorella vulgaris with anti-colorectal cancer activity. Int J Biol Macromol 2019; 134:976-983. [DOI: 10.1016/j.ijbiomac.2019.05.117] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/11/2019] [Accepted: 05/19/2019] [Indexed: 12/14/2022]
|
89
|
Vinothini G, Latha S, Arulmozhi M, Dhanasekaran D. Statistical optimization, physio-chemical and bio-functional attributes of a novel exopolysaccharide from probiotic Streptomyces griseorubens GD5. Int J Biol Macromol 2019; 134:575-587. [DOI: 10.1016/j.ijbiomac.2019.05.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/25/2019] [Accepted: 05/03/2019] [Indexed: 01/21/2023]
|
90
|
Wang K, Niu M, Yao D, Zhao J, Wu Y, Lu B, Zheng X. Physicochemical characteristics and in vitro and in vivo antioxidant activity of a cell-bound exopolysaccharide produced by Lactobacillus fermentum S1. Int J Biol Macromol 2019; 139:252-261. [PMID: 31374277 DOI: 10.1016/j.ijbiomac.2019.07.200] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/22/2019] [Accepted: 07/29/2019] [Indexed: 11/27/2022]
Abstract
A cell-bound exopolysaccharide (c-EPS) from Lactobacillus fermentum S1 was isolated and purified to near homogeneity by anion exchange and gel filtration chromatography. The c-EPS is a homogeneous heteropolysaccharide with an average molecular weight of 7.19 × 105 Da and comprises mainly mannose, rhamnose, glucose, and galactose. Fourier transform infrared spectroscopy spectrum of the c-EPS exhibited typical characteristic absorption peaks of polysaccharides. Methylation and NMR analyses showed that the c-EPS had a backbone of α-D-Galp-(1 → 3), α-L-Rhap-(1 → 2), α-D-Glcp-(1 → 3), β-D-Galp-(1 → 3), β-D-Glclp-(1 → 2), and β-L-Rhap-(1 → 3,4) residues, terminated with α-D-Manp-(1 → residue. The advanced structure study indicated the c-EPS not to have a triple-helical conformation, while the microstructural study revealed a hollow porous structure for c-EPS. Further, the thermal analysis showed that the degradation temperature for the c-EPS was 288.0 °C; its peak temperature was 89.4 °C with an enthalpy value of 273.1 J/g. Moreover, the c-EPS exhibited potent DPPH, hydroxyl, and ABTS+ radicals scavenging activities, as well as FRAP in a dose-dependent manner, which could significantly enhance the T-AOC and SOD activity and reduce MDA level in Caenorhabditis elegans. Therefore, this c-EPS could be utilized as a promising natural antioxidant for application in functional foods.
Collapse
Affiliation(s)
- Kun Wang
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing, PR China
| | - Mengmeng Niu
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Di Yao
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Jing Zhao
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Yue Wu
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Baoxin Lu
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing, PR China.
| | - Xiqun Zheng
- College of Food science, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; National Coarse Cereals Engineering Research Center, Daqing, PR China.
| |
Collapse
|
91
|
Giri SS, Ryu E, Park SC. Characterization of the antioxidant and anti-inflammatory properties of a polysaccharide-based bioflocculant from Bacillus subtilis F9. Microb Pathog 2019; 136:103642. [PMID: 31330263 DOI: 10.1016/j.micpath.2019.103642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/04/2019] [Accepted: 07/19/2019] [Indexed: 10/26/2022]
Abstract
Microbial flocculants are versatile class of novel biomacromolecules with numerous potential industrial applications. This study sought to investigate the antimicrobial, antioxidant, and anti-inflammatory potential of a polysaccharide-based bioflocculant (PBB) extracted from Bacillus subtilis F9. To achieve this, the antioxidant activity of different PBB concentrations(100 μg/mL ̶ 1000 μg/mL) was first examined in vitro using 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl radicals, and superoxide radical scavenging assays. Further, the anti-inflammatory activity of PBB against lipopolysaccharide (LPS; 1 μg/mL)-induced inflammatory mediators released from headkidney (HK)-derived macrophages of Labeo rohita was investigated. Our results revealed that the capacities of 800 μg/mL of PBB to scavenge DPPH, hydroxyl radicals, and superoxide radicals were 81.46 ± 1.37%, 66.34 ± 2.63%, and 78.03 ± 2.46%, respectively, which were slightly higher that observed following treatment with 400 μg/mL of the positive control (ascorbic acid). Further, the radical scavenging capacity of PBB was found to steadily increase with increasing concentrations of PBB. Pre-treatment with PBB also inhibited nitric oxide production in a dose-dependent manner. We next examined the effect of PBB on proinflammatory cytokines (TNF-α, and IL-1β) and anti-inflammatory cytokines (IL-10, TGF-β) via qRT-PCR and ELISA. We found that PBB markedly inhibited the LPS-induced mRNA and protein expression levels of TNF-α and IL-1β, while it significantly increased those of IL-10 and TGF-β. Further, PBB exhibited an antibacterial activity against multiple food-borne pathogens with minimal inhibitory concentration values in the range of 3 ̶ 11 mg/mL. Importantly, PBB exhibited negligible cytotoxic effects against HK macrophages. Taken together these results suggest that PBB may serve as a natural antioxidant for application in functional therapies and may also be exploited for its anti-inflammatory potential.
Collapse
Affiliation(s)
- Sib Sankar Giri
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, South Korea.
| | - EunChae Ryu
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, South Korea.
| | - Se Chang Park
- Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, South Korea.
| |
Collapse
|
92
|
Grishin AV, Karyagina AS. Polysaccharide Galactan Inhibits Pseudomonas aeruginosa Biofilm Formation but Protects Pre-formed Biofilms from Antibiotics. BIOCHEMISTRY (MOSCOW) 2019; 84:509-519. [PMID: 31234765 DOI: 10.1134/s0006297919050055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Microorganisms residing within a biofilm become more tolerant to antibiotics and other types of adverse impact, and biofilm formation by pathogenic bacteria is an important problem of current medicine. Polysaccharides that prevent biofilm formation are among the promising candidates to help tackle this problem. Earlier we demonstrated the ability of a potato polysaccharide galactan to inhibit biofilm formation by a Pseudomonas aeruginosa clinical isolate. Here we investigate the effect of potato galactan on P. aeruginosa biofilms in more detail. Microscopic analysis indicated that the galactan did not interfere with the adhesion of bacterial cells to the substrate but prevented the build-up of bacterial biomass. Moreover, the galactan not only inhibited biofilm formation, but partially destroyed pre-formed biofilms. Presumably, this activity of the galactan was due to the excessive aggregation of bacterial cells, which prohibited the formation and maintenance of proper biofilm architecture, or due to some other mechanisms of biofilm structure remodeling. This led to an unexpected effect, i.e., P. aeruginosa biofilms treated with an antibiotic and the galactan retained more viable bacterial cells compared to biofilms treated with the antibiotic alone. Galactan is the first polysaccharide demonstrated to exert such effect on bacterial biofilms.
Collapse
Affiliation(s)
- A V Grishin
- N. F. Gamaleya National Research Center of Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia. .,All-Russia Research Institute of Agricultural Biotechnology, Moscow, 127550, Russia
| | - A S Karyagina
- N. F. Gamaleya National Research Center of Epidemiology and Microbiology, Ministry of Health of the Russian Federation, Moscow, 123098, Russia. .,All-Russia Research Institute of Agricultural Biotechnology, Moscow, 127550, Russia.,A. N. Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
| |
Collapse
|
93
|
Sran KS, Bisht B, Mayilraj S, Roy Choudhury A. Structural characterization and antioxidant potential of a novel anionic exopolysaccharide produced by marine Microbacterium aurantiacum FSW-25. Int J Biol Macromol 2019; 131:343-352. [DOI: 10.1016/j.ijbiomac.2019.03.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 02/16/2019] [Accepted: 03/02/2019] [Indexed: 11/30/2022]
|
94
|
Arunkumar P, Sadish Kumar V, Saran S, Bindun H, Devipriya SP. Isolation of active coagulant protein from the seeds of Strychnos potatorum - a potential water treatment agent. ENVIRONMENTAL TECHNOLOGY 2019; 40:1624-1632. [PMID: 29350585 DOI: 10.1080/09593330.2018.1427798] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 01/10/2018] [Indexed: 06/07/2023]
Abstract
The application of natural coagulants for decentralized water treatment is gaining importance as a part of global sustainable initiative. This study focuses on the isolation of active coagulation components responsible for water clarification with respect to Strychnos potatorum seeds. The active coagulant components, protein and polysaccharide, were successfully isolated, dialysed and subjected to gel permeation chromatography. The polysaccharide was isolated with the saline extraction method and characterized using FTIR and NMR spectroscopy. Protein was precipitated with 80% ammonium sulphate solution combined with dialysis and gel permeation chromatography using Sephadex G-50. SDS-PAGE revealed that the isolated protein has a molecular weight of 12 kDa. The small-scale coagulation assay suggests that the protein fraction has superior coagulation activity than the isolated polysaccharide residue. The active coagulant fractions reported in this study would be helpful in deploying cheaper and simple methods in scaling up the coagulant fraction from these seeds acting as a potential water treatment agent.
Collapse
Affiliation(s)
- P Arunkumar
- a Department of Ecology and Environmental Sciences, School of Life Sciences , Pondicherry University , Pondicherry , India
| | - V Sadish Kumar
- b Department of Molecular Biology and Biochemistry , Pondicherry University , Pondicherry , India
| | - S Saran
- a Department of Ecology and Environmental Sciences, School of Life Sciences , Pondicherry University , Pondicherry , India
| | - Harsha Bindun
- a Department of Ecology and Environmental Sciences, School of Life Sciences , Pondicherry University , Pondicherry , India
| | - Suja P Devipriya
- a Department of Ecology and Environmental Sciences, School of Life Sciences , Pondicherry University , Pondicherry , India
| |
Collapse
|
95
|
Zhang J, Liu L, Ren Y, Chen F. Characterization of exopolysaccharides produced by microalgae with antitumor activity on human colon cancer cells. Int J Biol Macromol 2019; 128:761-767. [DOI: 10.1016/j.ijbiomac.2019.02.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/30/2019] [Accepted: 02/02/2019] [Indexed: 02/08/2023]
|
96
|
Attia MS, El-Sayyad GS, Saleh SS, Balabel NM, El-Batal AI. Spirulina platensis-Polysaccharides Promoted Green Silver Nanoparticles Production Using Gamma Radiation to Suppress the Expansion of Pear Fire Blight-Producing Erwinia amylovora. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01550-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
97
|
Sun T, Qin Y, Xie J, Xu H, Gan J, Wu J, Bian X, Li X, Xiong Z, Xue B. Effect of Maillard reaction on rheological, physicochemical and functional properties of oat β-glucan. Food Hydrocoll 2019. [DOI: 10.1016/j.foodhyd.2018.10.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
98
|
İspirli H, Sagdic O, Yılmaz MT, Dertli E. Physicochemical characterisation of an α-glucan from Lactobacillus reuteri E81 as a potential exopolysaccharide suitable for food applications. Process Biochem 2019. [DOI: 10.1016/j.procbio.2018.12.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
99
|
Sran KS, Sundharam SS, Krishnamurthi S, Roy Choudhury A. Production, characterization and bio-emulsifying activity of a novel thermostable exopolysaccharide produced by a marine strain of Rhodobacter johrii CDR-SL 7Cii. Int J Biol Macromol 2019; 127:240-249. [DOI: 10.1016/j.ijbiomac.2019.01.045] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/21/2018] [Accepted: 01/10/2019] [Indexed: 12/13/2022]
|
100
|
Exopolysaccharides produced by Pandoraea shows emulsifying and anti-biofilm activities. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1737-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|