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1. (Article ID: 5409)
Cai G, Liu Y, Li X, Lu J
New Levan-Type Exopolysaccharide from Bacillus amyloliquefaciens as an Antiadhesive Agent against Enterotoxigenic Escherichia coli
Journal of Agricultural and Food Chemistry 67(28) (2019)
8029-8034
A special levan-type exopolysaccharide (EPS) from Bacillus amyloliquefaciens JN4 with antiadhesive activity against enterotoxigenic Escherichia coli (ETEC) was purified and identified. Chemical analysis indicated that EPS-JN4 with a low molecular weight of 8 kDa is composed of fructose and glucose with a molar ratio of 46.1:1. Structural analysis clarified that EPS-JN4 contains a main chain of β-(2,6)-linked Fruf residues and intensive branches of a single 2-linked Fruf at every six residues. Furthermore, the superior antiadhesive activity of EPS-JN4 against ETEC showed its potential usage as an antiadhesive agent for diarrhea prevention. EPS-JN4 is a specific type of levan family, for its small molecular size and intensive branches. The results expand the knowledge on structural types of levan and illustrate its potential as an antiadhesive agent for diarrhea prevention, which will be conducive to elucidate the relation between structure and function.
enterotoxigenic, exopolysaccharide, enterotoxigenic Escherichia coli, levan, antiadhesive, Bacillus amyloliquefaciens
NCBI PubMed ID: 31246026Publication DOI: 10.1021/acs.jafc.9b03234Journal NLM ID: 0374755Publisher: American Chemical Society
Correspondence: xiaomin
jiangnan.edu.cn; jlu
jiangnan.edu.cn
Institutions: The Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, 1800 Lihu Road, Wuxi 214122, P. R. China, National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122 , P. R. China, Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, P. R. China, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122 , P. R. China
Methods: 13C NMR, 1H NMR, methylation, NMR-2D, IR, GC-MS, sugar analysis, HPAEC-PAD, hemagglutination, HPGFC
The publication contains the following compound(s):
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2. (Article ID: 6378)
Díaz-Cornejo S, Otero MC, Banerjee A, Gordillo-Fuenzalida F
Biological properties of exopolysaccharides produced by Bacillus spp
Microbiology Research 268 (2023)
127276
There is currently a constant search for ecofriendly bioproducts, which could contribute to various biomedical applications. Among bioproducts, exopolysaccharides are prominent contemporary extracellular biopolymers that are produced by a great variety of bacterial species. These homo- or heteropolymers are composed of monomeric sugar units linked by glycosidic bonds, which are secreted to the external medium. Bacillus spp. are reported to be present in different ecosystems and produce exopolysaccharides with different biological properties such as antioxidant, antibacterial, antiviral anti-inflammatory, among others. Since a great diversity of bacterial strains are able to produce exopolysaccharides, a great variation in the molecular composition is observed, which is indeed present in some of the chemical structures predicted until date. These molecular characteristics and their relations with different biological functions are discussed in order to visualize future applications in biomedical section.
antimicrobial, Antioxidant, Antiviral, anti-inflammatory, biomedicine
NCBI PubMed ID: 36525789Publication DOI: 10.1016/j.micres.2022.127276Journal NLM ID: 101535908Publisher: Pavia: PagePress Publications
Correspondence: F. Gordillo-Fuenzalida
ucm.cl>
Institutions: Centro de Investigacion de Estudios Avanzados del Maule, Vicerrectoria de Investigacion y Posgrado, Universidad Catolica del Maule, Talca 3466706, Chile, Laboratorio de Microbiología Aplicada, Centro de Biotecnología de los Recursos Naturales, Facultad de Ciencias Agrarias y Forestales, Universidad Católica del Maule, Avda. San Miguel, 3605 Talca, Chile, Escuela de Química y Farmacia, Facultad de Medicina, Universidad Andrés Bello, República 252, Santiago, Chile
The publication contains the following compound(s):
- Compound ID: 16404
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b-D-Fruf-(2-1)-+
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-6)-b-D-Fruf-(2-6)-{{{-b-D-Fruf-(2-6)-}}}/n=4/-b-D-Fruf-(2- |
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Structure type: polymer chemical repeating unit
Compound class: EPS
- Compound ID: 16403
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b-D-Manp-(1-?)-SUG-(1-4)-a-D-Manp-(1-6)-+ b-D-Manp-(1-?)-SUG-(1-4)-a-D-Manp-(1-6)-+
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-4)-a-D-Manp-(1-4)-a-D-Manp-(1-4)-a-D-Manp-(1-4)-a-D-Manp-(1-2)-a-D-Manp-(1-4)-a-D-Manp-(1-4)-a-D-Manp-(1- |
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Structure type: structural motif or average structure
Compound class: EPS
- Compound ID: 16405
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-4)-{{{-b-Glc-(1-4)-}}}/n=5/-b-Rha-(1-4)-{{{-b-Ara-(1-4)-}}}/n=3/-b-Glc-(1- |
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Structure type: structural motif or average structure
Trivial name: EPSR4
Compound class: EPS
- Compound ID: 16406
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b-D-Fruf-(2-1)-+ b-D-Fruf-(2-1)-+
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-6)-b-D-Fruf-(2-6)-{{{-b-D-Fruf-(2-6)-}}}/n=5/-b-D-Fruf-(2- |
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Structure type: structural motif or average structure
Compound class: EPS
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